toteBlender for v-1.0
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Hamidreza
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# Tote Blender simulation (v-1.0)
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## Problem Definition
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The problem is to simulate a double pedestal tote blender (mixer) with the diameter **0.03 m** and **0.1 m** respectively, the length **0.3 m**, rotating at **28 rpm**. This blender is filled with **24000** particles. The timestep for integration is **0.00002 s**. There is one type of particle in this blender. Particles are positioned before the start of simulation to fill the blender.
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* **24000** particles with **5 mm** diameter are positioned, in order, and let to be settled under gravity. After settling particles, this blender starts to rotate at t=**1s**.
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<html>
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<body>
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<div align="center"><b>
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a view of the tote-blender while rotating
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</div></b>
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<div align="center">
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<img src="https://github.com/PhasicFlow/phasicFlow/blob/media/media/Tote-blender.gif", width=700px>
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</div>
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<div align="center"><i>
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particles are colored according to their velocity
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</div></i>
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</body>
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</html>
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# Setting up the Case
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As it has been explained in the previous cases, the simulation case setup is based on text-based scripts. Here, the simulation case setup files are stored into two folders: `caseSetup`, `setting` (see the above folders). Unlike the previous cases, this case does not have the `stl` file and the surfaces are defined based on the built-in utilities in phasicFlow. See next the section for more information on how we can setup the geometry and its rotation.
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## Geometry
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### Defining rotation axis
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In file `settings/geometryDict` the information of rotating axis and speed of rotation are defined. The rotation of this blender starts at time=**0.5 s** and ends at time=**9.5 s**.
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```C++
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// information for rotatingAxis motion model
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rotatingAxis
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{
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axisOfRotation
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{
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p1 (-0.1 0.0 0.15); // first point for the axis of rotation
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p2 ( 0.1 0.0 0.15); // second point for the axis of rotation
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omega 1.5708; // rotation speed ==> 15 rad/s
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// Start time of Geometry Rotating (s)
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startTime 0.5;
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// End time of Geometry Rotating (s)
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endTime 9.5;
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}
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}
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```
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### Surfaces
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In `settings/geometryDict` file, the surfaces and motion component of each surface are defined to form a rotating tote-blender. The geometry is composed of top and bottom cylinders, top and bottom cones, a cylindrical shell and top and bottom Gates.
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```C++
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surfaces
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{
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topGate
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{
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// type of wall
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type cylinderWall;
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// begin point of cylinder axis
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p1 (0.0 0.0 0.3);
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// end point of cylinder axis
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p2 (0.0 0.0 0.301);
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// radius at p1
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radius1 0.03;
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// radius at p2
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radius2 0.0001;
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// material of wall
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material solidProperty;
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// motion component name
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motion axisOfRotation;
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}
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topCylinder
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{
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type cylinderWall;
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p1 (0.0 0.0 0.28);
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p2 (0.0 0.0 0.3);
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radius1 0.03;
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radius2 0.03;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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coneShelltop
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{
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type cylinderWall;
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p1 (0.0 0.0 0.2);
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p2 (0.0 0.0 0.28);
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radius1 0.1;
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radius2 0.03;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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cylinderShell
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{
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type cylinderWall;
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p1 (0.0 0.0 0.1);
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p2 (0.0 0.0 0.2);
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radius1 0.1;
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radius2 0.1;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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coneShelldown
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{
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type cylinderWall;
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p1 (0.0 0.0 0.02);
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p2 (0.0 0.0 0.1);
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radius1 0.03;
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radius2 0.1;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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bottomCylinder
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{
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type cylinderWall;
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p1 (0.0 0.0 0.0);
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p2 (0.0 0.0 0.02);
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radius1 0.03;
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radius2 0.03;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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exitGate
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{
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type cylinderWall;
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p1 (0.0 0.0 -0.001);
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p2 (0.0 0.0 0.0);
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radius1 0.03;
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radius2 0.0001;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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}
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```
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## Defining particles
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### Diameter and material of spheres
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In the `caseSetup/shapes` the diameter and the material name of the particles are defined.
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<div align="center">
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in <b>caseSetup/shapes</b> file
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</div>
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```C++
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// name of shapes
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names (sphere1);
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// diameter of shapes (m)
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diameters (0.005);
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// material name for shapes
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materials (solidProperty);
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```
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### Particle positioning before start of simulation
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Particles are positioned before the start of simulation. The positioning can be ordered or random. Here we use ordered positioning. 24000 particles are positioned in a cylinderical region inside the tote-blender.
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<div align="center">
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in <b>settings/particlesDict</b> file
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</div>
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```C++
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// positions particles
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positionParticles
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{
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// ordered positioning
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method positionOrdered;
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// maximum number of particles in the simulation
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maxNumberOfParticles 25001;
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// perform initial sorting based on morton code?
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mortonSorting Yes;
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// cylinderical region for positioning particles
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cylinder
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{
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p1 (0.0 0.0 0.09);
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p2 (0.0 0.0 0.21);
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radius 0.09;
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}
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positionOrderedInfo
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{
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// minimum space between centers of particles
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diameter 0.005;
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// number of particles in the simulation
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numPoints 24000;
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// axis order for filling the space with particles
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axisOrder (x y z);
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}
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}
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```
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## Interaction between particles
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In `caseSetup/interaction` file, material names and properties and interaction parameters are defined. Since we are defining 1 material type in the simulation, the interaction matrix is 1x1 (interactions are symmetric).
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```C++
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// a list of materials names
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materials (solidProperty);
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// density of materials [kg/m3]
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densities (1000.0);
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contactListType sortedContactList;
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model
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{
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contactForceModel nonLinearNonLimited;
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rollingFrictionModel normal;
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/*
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Property (solidProperty-solidProperty);
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*/
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// Young modulus [Pa]
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Yeff (1.0e6);
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// Shear modulus [Pa]
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Geff (0.8e6);
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// Poisson's ratio [-]
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nu (0.25);
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// coefficient of normal restitution
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en (0.7);
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// dynamic friction
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mu (0.3);
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// rolling friction
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mur (0.1);
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}
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```
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# Performing Simulation and previewing the results
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To perform simulations, enter the following commands one after another in the terminal.
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Enter `particlesPhasicFlow` command to create the initial fields for particles.
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Enter `geometryPhasicFlow` command to create the geometry.
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At last, enter `sphereGranFlow` command to start the simulation.
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After finishing the simulation, you can use `pFlowtoVTK` to convert the results into vtk format stored in ./VTK folder.
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@ -0,0 +1,49 @@
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/* -------------------------------*- C++ -*--------------------------------- *\
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| phasicFlow File |
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| copyright: www.cemf.ir |
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\* ------------------------------------------------------------------------- */
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objectName interaction;
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objectType dicrionary;
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fileFormat ASCII;
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/*---------------------------------------------------------------------------*/
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materials (solidProperty); // a list of materials names
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densities (1000.0); // density of materials [kg/m3]
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contactListType sortedContactList;
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model
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{
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contactForceModel nonLinearNonLimited;
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rollingFrictionModel normal;
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/*
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Property (solidProperty-solidProperty)
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*/
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Yeff (1.0e6); // Young modulus [Pa]
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Geff (0.8e6); // Shear modulus [Pa]
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nu (0.25); // Poisson's ratio [-]
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en (0.7); // coefficient of normal restitution
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mu (0.3); // dynamic friction
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mur (0.1); // rolling friction
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}
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contactSearch
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{
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method NBS;
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updateInterval 10;
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sizeRatio 1.1;
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cellExtent 0.55;
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adjustableBox Yes;
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}
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@ -7,11 +7,8 @@ objectType sphereShape;
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fileFormat ASCII;
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/*---------------------------------------------------------------------------*/
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// name of shapes
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names (sphere1);
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names (sphere1); // name of shapes
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// diameter of shapes (m)
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diameters (0.005);
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diameters (0.005); // diameter of shapes (m)
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// material name for shapes
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materials (solidProperty);
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materials (solidProperty); // material name for shapes
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0
tutorials/sphereGranFlow/toteblender/cleanThisCase → tutorials/sphereGranFlow/toteBlender/cleanThisCase
Normal file → Executable file
0
tutorials/sphereGranFlow/toteblender/cleanThisCase → tutorials/sphereGranFlow/toteBlender/cleanThisCase
Normal file → Executable file
0
tutorials/sphereGranFlow/toteblender/runThisCase → tutorials/sphereGranFlow/toteBlender/runThisCase
Normal file → Executable file
0
tutorials/sphereGranFlow/toteblender/runThisCase → tutorials/sphereGranFlow/toteBlender/runThisCase
Normal file → Executable file
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@ -0,0 +1,50 @@
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/* -------------------------------*- C++ -*--------------------------------- *\
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| phasicFlow File |
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| copyright: www.cemf.ir |
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\* ------------------------------------------------------------------------- */
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objectName domainDict;
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objectType dictionary;
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fileFormat ASCII;
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/*---------------------------------------------------------------------------*/
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// Simulation domain: every particles that goes outside this domain will be deleted
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globalBox
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{
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min (-0.3 -0.3 -0.3); // lower corner point of the box
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max ( 0.5 0.5 0.5); // upper corner point of the box
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}
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boundaries
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{
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left
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{
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type exit;
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}
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right
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{
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type exit;
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}
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bottom
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{
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type exit;
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}
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top
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{
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type exit;
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}
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rear
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{
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type exit;
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}
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front
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{
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type exit;
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}
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}
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@ -0,0 +1,160 @@
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/* -------------------------------*- C++ -*--------------------------------- *\
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| phasicFlow File |
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| copyright: www.cemf.ir |
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\* ------------------------------------------------------------------------- */
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objectName geometryDict;
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objectType dictionary;
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fileFormat ASCII;
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/*---------------------------------------------------------------------------*/
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motionModel rotatingAxis;
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rotatingAxisInfo
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{
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axisOfRotation
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{
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p1 (-0.1 0.0 0.15);
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p2 ( 0.1 0.0 0.15);
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omega 1.5708;
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startTime 0.5;
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endTime 9.5;
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}
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}
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surfaces
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{
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topGate
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{
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type cylinderWall; // type of wall
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p1 (0.0 0.0 0.3); // begin point of cylinder axis
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p2 (0.0 0.0 0.301); // end point of cylinder axis
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radius1 0.03; // radius at p1
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radius2 0.0001; // radius at p2
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material solidProperty; // material of wall
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motion axisOfRotation;
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}
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topCylinder
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{
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type cylinderWall;
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p1 (0.0 0.0 0.28);
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p2 (0.0 0.0 0.3);
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radius1 0.03;
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radius2 0.03;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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coneShelltop
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{
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type cylinderWall;
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p1 (0.0 0.0 0.2);
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p2 (0.0 0.0 0.28);
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radius1 0.1;
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radius2 0.03;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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cylinderShell
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{
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type cylinderWall;
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p1 (0.0 0.0 0.1);
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p2 (0.0 0.0 0.2);
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radius1 0.1;
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radius2 0.1;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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coneShelldown
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{
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type cylinderWall;
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p1 (0.0 0.0 0.02);
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p2 (0.0 0.0 0.1);
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radius1 0.03;
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radius2 0.1;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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bottomCylinder
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{
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type cylinderWall;
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p1 (0.0 0.0 0.0);
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p2 (0.0 0.0 0.02);
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radius1 0.03;
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radius2 0.03;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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exitGate
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{
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type cylinderWall;
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p1 (0.0 0.0 -0.001);
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p2 (0.0 0.0 0.0);
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radius1 0.03;
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radius2 0.0001;
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resolution 36;
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material solidProperty;
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motion axisOfRotation;
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}
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}
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@ -0,0 +1,58 @@
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/* -------------------------------*- C++ -*--------------------------------- *\
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| phasicFlow File |
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| copyright: www.cemf.ir |
|
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\* ------------------------------------------------------------------------- */
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objectName particlesDict;
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objectType dictionary;
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fileFormat ASCII;
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/*---------------------------------------------------------------------------*/
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setFields
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{
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/*
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Default value for fields defined for particles
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These fields should always be defined for simulations with
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spherical particles.
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*/
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defaultValue
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{
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velocity realx3 (0 0 0); // linear velocity (m/s)
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acceleration realx3 (0 0 0); // linear acceleration (m/s2)
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rVelocity realx3 (0 0 0); // rotational velocity (rad/s)
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shapeName word sphere1; // name of the particle shape
|
||||
}
|
||||
|
||||
selectors
|
||||
{}
|
||||
}
|
||||
|
||||
positionParticles
|
||||
{
|
||||
|
||||
method ordered; // ordered positioning
|
||||
|
||||
mortonSorting Yes; // perform initial sorting based on morton code?
|
||||
|
||||
orderedInfo
|
||||
{
|
||||
diameter 0.005; // minimum space between centers of particles
|
||||
|
||||
numPoints 24000; // number of particles in the simulation
|
||||
|
||||
axisOrder (x y z); // axis order for filling the space with particles
|
||||
}
|
||||
|
||||
regionType cylinder; // other options: cylinder and sphere
|
||||
|
||||
cylinderInfo
|
||||
{
|
||||
p1 (0.0 0.0 0.09);
|
||||
|
||||
p2 (0.0 0.0 0.21);
|
||||
|
||||
radius 0.09; // radius of cylinder
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,35 @@
|
|||
/* -------------------------------*- C++ -*--------------------------------- *\
|
||||
| phasicFlow File |
|
||||
| copyright: www.cemf.ir |
|
||||
\* ------------------------------------------------------------------------- */
|
||||
objectName settingsDict;
|
||||
objectType dictionary;
|
||||
fileFormat ASCII;
|
||||
/*---------------------------------------------------------------------------*/
|
||||
|
||||
run toteBlender;
|
||||
|
||||
dt 0.00002; // time step for integration (s)
|
||||
|
||||
startTime 0; // start time for simulation
|
||||
|
||||
endTime 10; // end time for simulation
|
||||
|
||||
saveInterval 0.05; // time interval for saving the simulation
|
||||
|
||||
timePrecision 4; // maximum number of digits for time folder
|
||||
|
||||
g (0 0 -9.8); // gravity vector (m/s2)
|
||||
|
||||
// include/exclude fields for saving on disk
|
||||
includeObjects (diameter);
|
||||
|
||||
excludeObjects (rVelocity.dy1 pStructPosition.dy1 pStructVelocity.dy1);
|
||||
|
||||
integrationMethod AdamsBashforth2;
|
||||
|
||||
writeFormat ascii;
|
||||
|
||||
timersReport Yes;
|
||||
|
||||
timersReportInterval 0.05;
|
||||
|
|
@ -1,356 +0,0 @@
|
|||
# Problem Definition
|
||||
The problem is to simulate a double pedestal tote blender (mixer) with the diameter **0.03 m** and **0.1 m** respectively, the length **0.3 m**, rotating at **28 rpm**. This blender is filled with **24000** particles. The timestep for integration is **0.00001 s**. There is one type of particle in this blender. Particles are positioned before start of simulation to fill the blender.
|
||||
* **24000** particles with **5 mm** diameter are positioned, in order, and let to be settled under gravity. After settling particles, this blender starts to rotate at t=**1s**.
|
||||
|
||||
<html>
|
||||
<body>
|
||||
<div align="center"><b>
|
||||
a view of the tote-blender while rotating
|
||||
</div></b>
|
||||
<div align="center">
|
||||
<img src="https://github.com/PhasicFlow/phasicFlow/blob/media/media/Tote-blender.gif", width=700px>
|
||||
</div>
|
||||
<div align="center"><i>
|
||||
particles are colored according to their velocity
|
||||
</div></i>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
# Setting up the Case
|
||||
As it has been explained in the previous cases, the simulation case setup is based on text-based scripts. Here, the simulation case setup files are stored into two folders: `caseSetup`, `setting` (see the above folders). Unlike the previous cases, this case does not have the `stl` file and the surfaces are defined based on the built-in utilities in phasicFlow. See next the section for more information on how we can setup the geometry and its rotation.
|
||||
|
||||
## Geometry
|
||||
|
||||
### Defining rotation axis
|
||||
In file `settings/geometryDict` the information of rotating axis and speed of rotation are defined. The rotation of this blender starts at time=**0.5 s** and ends at time=**9.5 s**.
|
||||
|
||||
```C++
|
||||
// information for rotatingAxisMotion motion model
|
||||
rotatingAxisMotionInfo
|
||||
{
|
||||
axisOfRotation
|
||||
{
|
||||
p1 (-0.1 0.0 0.15); // first point for the axis of rotation
|
||||
p2 ( 0.1 0.0 0.15); // second point for the axis of rotation
|
||||
|
||||
omega 1.5708; // rotation speed ==> 15 rad/s
|
||||
|
||||
// Start time of Geometry Rotating (s)
|
||||
startTime 0.5;
|
||||
|
||||
// End time of Geometry Rotating (s)
|
||||
endTime 9.5;
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
|
||||
### Surfaces
|
||||
In `settings/geometryDict` file, the surfaces and motion component of each surface are defined to form a rotating tote-blender. The geometry is composed of top and bottom cylinders, top and bottom cones, a cylindrical shell and top and bottom Gates.
|
||||
|
||||
```C++
|
||||
surfaces
|
||||
{
|
||||
|
||||
topGate
|
||||
{
|
||||
// type of wall
|
||||
type cylinderWall;
|
||||
|
||||
// begin point of cylinder axis
|
||||
p1 (0.0 0.0 0.3);
|
||||
|
||||
// end point of cylinder axis
|
||||
p2 (0.0 0.0 0.301);
|
||||
|
||||
// radius at p1
|
||||
radius1 0.03;
|
||||
|
||||
// radius at p2
|
||||
radius2 0.0001;
|
||||
|
||||
// material of wall
|
||||
material solidProperty;
|
||||
|
||||
// motion component name
|
||||
motion axisOfRotation;
|
||||
}
|
||||
|
||||
topCylinder
|
||||
{
|
||||
// type of the wall
|
||||
type cylinderWall;
|
||||
|
||||
// begin point of cylinder axis
|
||||
p1 (0.0 0.0 0.28);
|
||||
|
||||
// end point of cylinder axis
|
||||
p2 (0.0 0.0 0.3);
|
||||
|
||||
// radius at p1
|
||||
radius1 0.03;
|
||||
|
||||
// radius at p2
|
||||
radius2 0.03;
|
||||
|
||||
// number of divisions
|
||||
resolution 36;
|
||||
|
||||
// material name of this wall
|
||||
material solidProperty;
|
||||
|
||||
// motion component name
|
||||
motion axisOfRotation;
|
||||
}
|
||||
|
||||
coneShelltop
|
||||
{
|
||||
// type of the wall
|
||||
type cylinderWall;
|
||||
|
||||
// begin point of cylinder axis
|
||||
p1 (0.0 0.0 0.2);
|
||||
|
||||
// end point of cylinder axis
|
||||
p2 (0.0 0.0 0.28);
|
||||
|
||||
// radius at p1
|
||||
radius1 0.1;
|
||||
|
||||
// radius at p2
|
||||
radius2 0.03;
|
||||
|
||||
// number of divisions
|
||||
resolution 36;
|
||||
|
||||
// material name of this wall
|
||||
material solidProperty;
|
||||
|
||||
// motion component name
|
||||
motion axisOfRotation;
|
||||
}
|
||||
|
||||
cylinderShell
|
||||
{
|
||||
// type of the wall
|
||||
type cylinderWall;
|
||||
|
||||
// begin point of cylinder axis
|
||||
p1 (0.0 0.0 0.1);
|
||||
|
||||
// end point of cylinder axis
|
||||
p2 (0.0 0.0 0.2);
|
||||
|
||||
// radius at p1
|
||||
radius1 0.1;
|
||||
|
||||
// radius at p2
|
||||
radius2 0.1;
|
||||
|
||||
// number of divisions
|
||||
resolution 36;
|
||||
|
||||
// material name of this wall
|
||||
material solidProperty;
|
||||
|
||||
// motion component name
|
||||
motion axisOfRotation;
|
||||
}
|
||||
|
||||
coneShelldown
|
||||
{
|
||||
|
||||
// type of the wall
|
||||
type cylinderWall;
|
||||
|
||||
// begin point of cylinder axis
|
||||
p1 (0.0 0.0 0.02);
|
||||
|
||||
// end point of cylinder axis
|
||||
p2 (0.0 0.0 0.1);
|
||||
|
||||
// radius at p1
|
||||
radius1 0.03;
|
||||
|
||||
// radius at p2
|
||||
radius2 0.1;
|
||||
|
||||
// number of divisions
|
||||
resolution 36;
|
||||
|
||||
// material name of this wall
|
||||
material solidProperty;
|
||||
|
||||
// motion component name
|
||||
motion axisOfRotation;
|
||||
}
|
||||
|
||||
bottomCylinder
|
||||
{
|
||||
// type of the wall
|
||||
type cylinderWall;
|
||||
|
||||
// begin point of cylinder axis
|
||||
p1 (0.0 0.0 0.0);
|
||||
|
||||
// end point of cylinder axis
|
||||
p2 (0.0 0.0 0.02);
|
||||
|
||||
// radius at p1
|
||||
radius1 0.03;
|
||||
|
||||
// radius at p2
|
||||
radius2 0.03;
|
||||
|
||||
// number of divisions
|
||||
resolution 36;
|
||||
|
||||
// material name of this wall
|
||||
material solidProperty;
|
||||
|
||||
// motion component name
|
||||
motion axisOfRotation;
|
||||
}
|
||||
|
||||
exitGate
|
||||
{
|
||||
|
||||
// type of the wall
|
||||
type cylinderWall;
|
||||
|
||||
// begin point of cylinder axis
|
||||
p1 (0.0 0.0 -0.001);
|
||||
|
||||
// end point of cylinder axis
|
||||
p2 (0.0 0.0 0.0);
|
||||
|
||||
// radius at p1
|
||||
radius1 0.03;
|
||||
|
||||
// radius at p2
|
||||
radius2 0.0001;
|
||||
|
||||
// number of divisions
|
||||
resolution 36;
|
||||
|
||||
// material name of this wall
|
||||
material solidProperty;
|
||||
|
||||
// motion component name
|
||||
motion axisOfRotation;
|
||||
}
|
||||
|
||||
}
|
||||
```
|
||||
|
||||
## Defining particles
|
||||
### Diameter and material of spheres
|
||||
In the `caseSetup/sphereShape` the diameter and the material name of the particles are defined.
|
||||
|
||||
<div align="center">
|
||||
in <b>caseSetup/sphereShape</b> file
|
||||
</div>
|
||||
|
||||
```C++
|
||||
// name of shapes
|
||||
names (sphere1);
|
||||
|
||||
// diameter of shapes (m)
|
||||
diameters (0.005);
|
||||
|
||||
// material name for shapes
|
||||
materials (solidProperty);
|
||||
```
|
||||
### Particle positioning before start of simulation
|
||||
Particles are positioned before the start of simulation. The positioning can be ordered or random. Here we use ordered positioning. 24000 particles are positioned in a cylinderical region inside the tote-blender.
|
||||
|
||||
<div align="center">
|
||||
in <b>settings/particlesDict</b> file
|
||||
</div>
|
||||
|
||||
```C++
|
||||
// positions particles
|
||||
positionParticles
|
||||
{
|
||||
// ordered positioning
|
||||
method positionOrdered;
|
||||
|
||||
// maximum number of particles in the simulation
|
||||
maxNumberOfParticles 25001;
|
||||
|
||||
// perform initial sorting based on morton code?
|
||||
mortonSorting Yes;
|
||||
|
||||
// cylinderical region for positioning particles
|
||||
cylinder
|
||||
{
|
||||
p1 (0.0 0.0 0.09);
|
||||
p2 (0.0 0.0 0.21);
|
||||
radius 0.09;
|
||||
}
|
||||
|
||||
positionOrderedInfo
|
||||
{
|
||||
// minimum space between centers of particles
|
||||
diameter 0.005;
|
||||
|
||||
// number of particles in the simulation
|
||||
numPoints 24000;
|
||||
|
||||
// axis order for filling the space with particles
|
||||
axisOrder (x y z);
|
||||
}
|
||||
}
|
||||
```
|
||||
|
||||
## Interaction between particles
|
||||
In `caseSetup/interaction` file, material names and properties and interaction parameters are defined. Since we are defining 1 material type in the simulation, the interaction matrix is 1x1 (interactions are symmetric).
|
||||
```C++
|
||||
// a list of materials names
|
||||
materials (solidProperty);
|
||||
|
||||
// density of materials [kg/m3]
|
||||
densities (1000.0);
|
||||
|
||||
contactListType sortedContactList;
|
||||
|
||||
model
|
||||
{
|
||||
contactForceModel nonLinearNonLimited;
|
||||
|
||||
rollingFrictionModel normal;
|
||||
|
||||
/*
|
||||
Property (solidProperty-solidProperty);
|
||||
*/
|
||||
|
||||
// Young modulus [Pa]
|
||||
Yeff (1.0e6);
|
||||
|
||||
// Shear modulus [Pa]
|
||||
Geff (0.8e6);
|
||||
|
||||
// Poisson's ratio [-]
|
||||
nu (0.25);
|
||||
|
||||
// coefficient of normal restitution
|
||||
en (0.7);
|
||||
|
||||
// coefficient of tangential restitution
|
||||
et (1.0);
|
||||
|
||||
// dynamic friction
|
||||
mu (0.3);
|
||||
|
||||
// rolling friction
|
||||
mur (0.1);
|
||||
}
|
||||
```
|
||||
|
||||
# Performing Simulation and previewing the results
|
||||
To perform simulations, enter the following commands one after another in the terminal.
|
||||
|
||||
Enter `$ particlesPhasicFlow` command to create the initial fields for particles.
|
||||
Enter `$ geometryPhasicFlow` command to create the geometry.
|
||||
At last, enter `$ sphereGranFlow` command to start the simulation.
|
||||
After finishing the simulation, you can use `$ pFlowtoVTK` to convert the results into vtk format stored in ./VTK folder.
|
||||
|
|
@ -1,52 +0,0 @@
|
|||
/* -------------------------------*- C++ -*--------------------------------- *\
|
||||
| phasicFlow File |
|
||||
| copyright: www.cemf.ir |
|
||||
\* ------------------------------------------------------------------------- */
|
||||
objectName interaction;
|
||||
objectType dicrionary;
|
||||
fileFormat ASCII;
|
||||
/*---------------------------------------------------------------------------*/
|
||||
materials (solidProperty); // a list of materials names
|
||||
|
||||
densities (1000.0); // density of materials [kg/m3]
|
||||
|
||||
contactListType sortedContactList;
|
||||
|
||||
contactSearch
|
||||
{
|
||||
method NBS; // method for broad search
|
||||
|
||||
updateInterval 10;
|
||||
|
||||
sizeRatio 1.1;
|
||||
|
||||
cellExtent 0.55;
|
||||
|
||||
adjustableBox Yes;
|
||||
}
|
||||
|
||||
model
|
||||
{
|
||||
contactForceModel nonLinearNonLimited;
|
||||
|
||||
rollingFrictionModel normal;
|
||||
|
||||
/*
|
||||
Property (solidProperty-solidProperty)
|
||||
*/
|
||||
|
||||
Yeff (1.0e6); // Young modulus [Pa]
|
||||
|
||||
Geff (0.8e6); // Shear modulus [Pa]
|
||||
|
||||
nu (0.25); // Poisson's ratio [-]
|
||||
|
||||
en (0.7); // coefficient of normal restitution
|
||||
|
||||
et (1.0); // coefficient of tangential restitution
|
||||
|
||||
mu (0.3); // dynamic friction
|
||||
|
||||
mur (0.1); // rolling friction
|
||||
}
|
||||
|
||||
|
|
@ -1,13 +0,0 @@
|
|||
/* -------------------------------*- C++ -*--------------------------------- *\
|
||||
| phasicFlow File |
|
||||
| copyright: www.cemf.ir |
|
||||
\* ------------------------------------------------------------------------- */
|
||||
objectName particleInsertion;
|
||||
objectType dicrionary;
|
||||
fileFormat ASCII;
|
||||
/*---------------------------------------------------------------------------*/
|
||||
active No; // is insertion active -> Yes or No
|
||||
|
||||
collisionCheck No; // is checked -> Yes or No
|
||||
|
||||
|
||||
|
|
@ -1,13 +0,0 @@
|
|||
/* -------------------------------*- C++ -*--------------------------------- *\
|
||||
| phasicFlow File |
|
||||
| copyright: www.cemf.ir |
|
||||
\* ------------------------------------------------------------------------- */
|
||||
objectName sphereDict;
|
||||
objectType sphereShape;
|
||||
fileFormat ASCII;
|
||||
/*---------------------------------------------------------------------------*/
|
||||
names (sphere1); // name of shapes
|
||||
|
||||
diameters (0.005); // diameter of shapes (m)
|
||||
|
||||
materials (solidProperty); // material name for shapes
|
||||
|
|
@ -1,64 +0,0 @@
|
|||
/* -------------------------------*- C++ -*--------------------------------- *\
|
||||
| phasicFlow File |
|
||||
| copyright: www.cemf.ir |
|
||||
\* ------------------------------------------------------------------------- */
|
||||
objectName domainDict;
|
||||
objectType dictionary;
|
||||
fileFormat ASCII;
|
||||
/*---------------------------------------------------------------------------*/
|
||||
globalBox // Simulation domain: every particles that goes outside this domain will be deleted
|
||||
{
|
||||
min (-0.3 -0.3 -0.3); // lower corner point of the box
|
||||
|
||||
max (0.5 0.5 0.5); // upper corner point of the box
|
||||
}
|
||||
|
||||
decomposition
|
||||
{
|
||||
direction z;
|
||||
}
|
||||
|
||||
boundaries
|
||||
{
|
||||
|
||||
|
||||
neighborListUpdateInterval 50; /* Determines how often (how many iterations) do you want to
|
||||
|
||||
rebuild the list of particles in the neighbor list
|
||||
|
||||
of all boundaries in the simulation domain */
|
||||
|
||||
updateInterval 10; // Determines how often do you want to update the new changes in the boundary
|
||||
|
||||
neighborLength 0.004; // The distance from the boundary plane within which particles are marked to be in the boundary list
|
||||
|
||||
left
|
||||
{
|
||||
type exit; // other options: periodic, reflective
|
||||
}
|
||||
|
||||
right
|
||||
{
|
||||
type exit; // other options: periodict, reflective
|
||||
}
|
||||
|
||||
bottom
|
||||
{
|
||||
type exit; // other options: periodict, reflective
|
||||
}
|
||||
|
||||
top
|
||||
{
|
||||
type exit; // other options: periodict, reflective
|
||||
}
|
||||
|
||||
rear
|
||||
{
|
||||
type exit; // other options: periodict, reflective
|
||||
}
|
||||
|
||||
front
|
||||
{
|
||||
type exit; // other options: periodict, reflective
|
||||
}
|
||||
}
|
||||
|
|
@ -1,159 +0,0 @@
|
|||
/* -------------------------------*- C++ -*--------------------------------- *\
|
||||
| phasicFlow File |
|
||||
| copyright: www.cemf.ir |
|
||||
\* ------------------------------------------------------------------------- */
|
||||
objectName geometryDict;
|
||||
objectType dictionary;
|
||||
fileFormat ASCII;
|
||||
/*---------------------------------------------------------------------------*/
|
||||
motionModel rotatingAxis; // motion model: rotating object around an axis
|
||||
|
||||
rotatingAxisInfo // information for rotatingAxisMotion motion model
|
||||
{
|
||||
axisOfRotation
|
||||
{
|
||||
p1 (-0.1 0.0 0.15); // first point for the axis of rotation
|
||||
|
||||
p2 ( 0.1 0.0 0.15); // second point for the axis of rotation
|
||||
|
||||
omega 1.5708; // rotation speed ==> 15 rad/s
|
||||
|
||||
startTime 0.5; // Start time of Geometry Rotating (s)
|
||||
|
||||
endTime 9.5; // End time of Geometry Rotating (s)
|
||||
}
|
||||
}
|
||||
|
||||
surfaces
|
||||
{
|
||||
topGate
|
||||
{
|
||||
type cylinderWall; // type of wall
|
||||
|
||||
p1 (0.0 0.0 0.3); // begin point of cylinder axis
|
||||
|
||||
p2 (0.0 0.0 0.301); // end point of cylinder axis
|
||||
|
||||
radius1 0.03; // radius at p1
|
||||
|
||||
radius2 0.0001; // radius at p2
|
||||
|
||||
material solidProperty; // material of wall
|
||||
|
||||
motion axisOfRotation; // motion component name
|
||||
}
|
||||
|
||||
topCylinder
|
||||
{
|
||||
type cylinderWall; // type of the wall
|
||||
|
||||
p1 (0.0 0.0 0.28); // begin point of cylinder axis
|
||||
|
||||
p2 (0.0 0.0 0.3); // end point of cylinder axis
|
||||
|
||||
radius1 0.03; // radius at p1
|
||||
|
||||
radius2 0.03; // radius at p2
|
||||
|
||||
resolution 36; // number of divisions
|
||||
|
||||
material solidProperty; // material name of this wall
|
||||
|
||||
motion axisOfRotation; // motion component name
|
||||
}
|
||||
|
||||
coneShelltop
|
||||
{
|
||||
type cylinderWall; // type of the wall
|
||||
|
||||
p1 (0.0 0.0 0.2); // begin point of cylinder axis
|
||||
|
||||
p2 (0.0 0.0 0.28); // end point of cylinder axis
|
||||
|
||||
radius1 0.1; // radius at p1
|
||||
|
||||
radius2 0.03; // radius at p2
|
||||
|
||||
resolution 36; // number of divisions
|
||||
|
||||
material solidProperty; // material name of this wall
|
||||
|
||||
motion axisOfRotation; // motion component name
|
||||
}
|
||||
|
||||
cylinderShell
|
||||
{
|
||||
type cylinderWall; // type of the wall
|
||||
|
||||
p1 (0.0 0.0 0.1); // begin point of cylinder axis
|
||||
|
||||
p2 (0.0 0.0 0.2); // end point of cylinder axis
|
||||
|
||||
radius1 0.1; // radius at p1
|
||||
|
||||
radius2 0.1; // radius at p2
|
||||
|
||||
resolution 36; // number of divisions
|
||||
|
||||
material solidProperty; // material name of this wall
|
||||
|
||||
motion axisOfRotation; // motion component name
|
||||
}
|
||||
|
||||
coneShelldown
|
||||
{
|
||||
type cylinderWall; // type of the wall
|
||||
|
||||
p1 (0.0 0.0 0.02); // begin point of cylinder axis
|
||||
|
||||
p2 (0.0 0.0 0.1); // end point of cylinder axis
|
||||
|
||||
radius1 0.03; // radius at p1
|
||||
|
||||
radius2 0.1; // radius at p2
|
||||
|
||||
resolution 36; // number of divisions
|
||||
|
||||
material solidProperty; // material name of this wall
|
||||
|
||||
motion axisOfRotation; // motion component name
|
||||
}
|
||||
|
||||
bottomCylinder
|
||||
{
|
||||
type cylinderWall; // type of the wall
|
||||
|
||||
p1 (0.0 0.0 0.0); // begin point of cylinder axis
|
||||
|
||||
p2 (0.0 0.0 0.02); // end point of cylinder axis
|
||||
|
||||
radius1 0.03; // radius at p1
|
||||
|
||||
radius2 0.03; // radius at p2
|
||||
|
||||
resolution 36; // number of divisions
|
||||
|
||||
material solidProperty; // material name of this wall
|
||||
|
||||
motion axisOfRotation; // motion component name
|
||||
}
|
||||
|
||||
exitGate
|
||||
{
|
||||
type cylinderWall; // type of the wall
|
||||
|
||||
p1 (0.0 0.0 -0.001); // begin point of cylinder axis
|
||||
|
||||
p2 (0.0 0.0 0.0); // end point of cylinder axis
|
||||
|
||||
radius1 0.03; // radius at p1
|
||||
|
||||
radius2 0.0001; // radius at p2
|
||||
|
||||
resolution 36; // number of divisions
|
||||
|
||||
material solidProperty; // material name of this wall
|
||||
|
||||
motion axisOfRotation; // motion component name
|
||||
}
|
||||
}
|
||||
|
|
@ -1,79 +0,0 @@
|
|||
/* -------------------------------*- C++ -*--------------------------------- *\
|
||||
| phasicFlow File |
|
||||
| copyright: www.cemf.ir |
|
||||
\* ------------------------------------------------------------------------- */
|
||||
objectName particlesDict;
|
||||
objectType dictionary;
|
||||
fileFormat ASCII;
|
||||
/*---------------------------------------------------------------------------*/
|
||||
setFields
|
||||
{
|
||||
/*
|
||||
Default value for fields defined for particles
|
||||
|
||||
These fields should always be defined for simulations with
|
||||
|
||||
spherical particles.
|
||||
*/
|
||||
|
||||
defaultValue
|
||||
{
|
||||
velocity realx3 (0 0 0); // linear velocity (m/s)
|
||||
|
||||
acceleration realx3 (0 0 0); // linear acceleration (m/s2)
|
||||
|
||||
rVelocity realx3 (0 0 0); // rotational velocity (rad/s)
|
||||
|
||||
shapeName word sphere1; // name of the particle shape
|
||||
}
|
||||
|
||||
selectors
|
||||
{
|
||||
shapeAssigne
|
||||
{
|
||||
selector stridedRange; // other options: box, cylinder, sphere, randomPoints
|
||||
|
||||
stridedRangeInfo
|
||||
{
|
||||
begin 0; // begin index of points
|
||||
|
||||
end 24000; // end index of points
|
||||
|
||||
stride 3; // stride for selector
|
||||
}
|
||||
|
||||
fieldValue // fields that the selector is applied to
|
||||
{
|
||||
shapeName word sphere1; // sets shapeName of the selected points to largeSphere
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
positionParticles // positions particles
|
||||
{
|
||||
|
||||
method ordered; // ordered positioning
|
||||
|
||||
mortonSorting Yes; // perform initial sorting based on morton code?
|
||||
|
||||
orderedInfo
|
||||
{
|
||||
diameter 0.005; // minimum space between centers of particles
|
||||
|
||||
numPoints 24000; // number of particles in the simulation
|
||||
|
||||
axisOrder (x y z); // axis order for filling the space with particles
|
||||
}
|
||||
|
||||
regionType cylinder; // other options: cylinder and sphere
|
||||
|
||||
cylinderInfo // cylinder for positioning particles
|
||||
{
|
||||
p1 (0.0 0.0 0.09); // Coordinates of bottom cylinderRegion (m,m,m)
|
||||
|
||||
p2 (0.0 0.0 0.21); // Coordinates of top cylinderRegion (m,m,m)
|
||||
|
||||
radius 0.09; // radius of cylinder
|
||||
}
|
||||
}
|
||||
|
|
@ -1,34 +0,0 @@
|
|||
/* -------------------------------*- C++ -*--------------------------------- *\
|
||||
| phasicFlow File |
|
||||
| copyright: www.cemf.ir |
|
||||
\* ------------------------------------------------------------------------- */
|
||||
objectName settingsDict;
|
||||
objectType dictionary;
|
||||
fileFormat ASCII;
|
||||
/*---------------------------------------------------------------------------*/
|
||||
run toteblender;
|
||||
|
||||
dt 0.00004; // time step for integration (s)
|
||||
|
||||
startTime 0; // start time for simulation
|
||||
|
||||
endTime 10; // end time for simulation
|
||||
|
||||
saveInterval 0.05; // time interval for saving the simulation
|
||||
|
||||
timePrecision 3; // maximum number of digits for time folder
|
||||
|
||||
g (0 0 -9.8); // gravity vector (m/s2)
|
||||
|
||||
includeObjects (diameter); // save necessary (i.e., required) data on disk
|
||||
|
||||
// exclude unnecessary data from saving on disk
|
||||
excludeObjects (rVelocity.dy1 pStructPosition.dy1 pStructVelocity.dy1);
|
||||
|
||||
integrationMethod AdamsBashforth2; // integration method
|
||||
|
||||
writeFormat ascii; // data writting format (ascii or binary)
|
||||
|
||||
timersReport Yes; // report timers (Yes or No)
|
||||
|
||||
timersReportInterval 0.02; // time interval for reporting timers
|
||||
Loading…
Reference in New Issue