updated V1.0 RotaryAirLock
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@ -3,6 +3,7 @@ The problem is to simulate a Rotary Air-Lock Valve. The external diameter of rot
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* **28000** particles with **5 mm** diameter are inserted into the valve with the rate of **4000 particles/s**.
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* The rotor starts its ortation at t = 1.25 s at the rate of 2.1 rad/s.
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<html>
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<body>
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<div align="center"><b>
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@ -6,15 +6,25 @@ objectName interaction;
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objectType dicrionary;
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fileFormat ASCII;
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/*---------------------------------------------------------------------------*/
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materials (sphereMat wallMat); // a list of materials names
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// a list of materials names
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materials (sphereMat wallMat);
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// density of materials [kg/m3]
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densities (1000 2500);
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densities (1000 2500); // density of materials [kg/m3]
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contactListType sortedContactList;
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contactSearch
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{
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method NBS; // method for broad search
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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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model
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{
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contactForceModel nonLinearNonLimited;
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@ -23,61 +33,29 @@ model
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/*
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Property (sphereMat-sphereMat sphereMat-wallMat
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wallMat-wallMat);
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*/
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// Young modulus [Pa]
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Yeff (1.0e6 1.0e6
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Yeff (1.0e6 1.0e6 // Young modulus [Pa]
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1.0e6);
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// Shear modulus [Pa]
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Geff (0.8e6 0.8e6
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Geff (0.8e6 0.8e6 // Shear modulus [Pa]
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0.8e6);
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// Poisson's ratio [-]
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nu (0.25 0.25
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nu (0.25 0.25 // Poisson's ratio [-]
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0.25);
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// coefficient of normal restitution
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en (0.7 0.8
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en (0.7 0.8 // coefficient of normal restitution
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1.0);
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// coefficient of tangential restitution
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et (1.0 1.0
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et (1.0 1.0 // coefficient of tangential restitution
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1.0);
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// dynamic friction
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mu (0.3 0.35
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mu (0.3 0.35 // dynamic friction
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0.35);
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// rolling friction
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mur (0.1 0.1
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mur (0.1 0.1 // rolling friction
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0.1);
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}
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contactSearch
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{
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// method for broad search particle-particle
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method NBS;
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// method for broad search particle-wall
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wallMapping cellMapping;
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NBSInfo
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{
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// each 10 timesteps, update neighbor list
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updateFrequency 10;
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// bounding box size to particle diameter (max)
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sizeRatio 1.1;
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}
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cellMappingInfo
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{
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// each 20 timesteps, update neighbor list
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updateFrequency 10;
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// bounding box for particle-wall search (> 0.5)
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cellExtent 0.6;
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}
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}
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@ -6,45 +6,38 @@ objectName particleInsertion;
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objectType dicrionary;
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fileFormat ASCII;
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/*---------------------------------------------------------------------------*/
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active yes; // is insertion active -> yes or no
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// is insertion active?
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active yes;
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// not implemented for yes
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collisionCheck No;
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checkForCollision No; // is checked -> yes or no
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/*
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one region is considered for inserting particles.
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one region is considered for inserting particles.
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*/
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topRegion
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{
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regionType box; // type of insertion region
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// type of insertion region
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type boxRegion;
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timeControl simulationTime;
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// insertion rate (particles/s)
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rate 4000;
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rate 4000; // insertion rate (particles/s)
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// Start time of Particles insertion (s)
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startTime 0;
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startTime 0; // Start time of Particles insertion (s)
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// End time of Particles insertion (s)
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endTime 7;
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endTime 7; // End time of Particles insertion (s)
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// Time Interval between each insertion (s)
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interval 0.025;
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insertionInterval 0.025; // Time Interval between each insertion (s)
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// Coordinates of BoxRegion (m,m,m)
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boxRegionInfo
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boxInfo // Coordinates of BoxRegion (m,m,m)
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{
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min ( 0.48 0.58 0.01 ); // (m,m,m)
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max ( 0.64 0.59 0.05 ); // (m,m,m)
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}
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setFields
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{
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// initial velocity of inserted particles
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velocity realx3 (0.0 -0.6 0.0);
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velocity realx3 (0.0 -0.6 0.0); // initial velocity of inserted particles
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}
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mixture
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@ -0,0 +1,13 @@
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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 particleInsertion;
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objectType dicrionary;
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fileFormat ASCII;
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/*---------------------------------------------------------------------------*/
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names (sphere); // names of shapes
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diameters (0.005); // diameter of shapes
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materials (sphereMat); // material names for shapes
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@ -0,0 +1,64 @@
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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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globalBox // Simulation domain: every particles that goes outside this domain will be deleted
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{
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min (0.397538 0.178212 0.00);
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max (0.725537 0.600214 0.06);
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}
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decomposition
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{
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direction z;
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}
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boundaries
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{
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neighborListUpdateInterval 50; /* Determines how often (how many iterations) do you want to
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rebuild the list of particles in the neighbor list
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of all boundaries in the simulation domain */
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updateInterval 10; // Determines how often do you want to update the new changes in the boundary
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neighborLength 0.004; // The distance from the boundary plane within which particles are marked to be in the boundary list
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left
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{
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type exit; // other options: periodict, reflective
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}
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right
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{
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type exit; // other options: periodict, reflective
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}
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bottom
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{
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type exit; // other options: periodict, reflective
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}
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top
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{
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type exit; // other options: periodict, reflective
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}
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rear
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{
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type exit; // other options: periodict, reflective
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}
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front
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{
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type exit; // other options: periodict, reflective
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}
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}
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@ -6,30 +6,21 @@ objectName geometryDict;
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objectType dictionary;
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fileFormat ASCII;
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/*---------------------------------------------------------------------------*/
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motionModel rotatingAxis; // motion model: rotating object around an axis
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// motion model: rotating object around an axis
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motionModel rotatingAxisMotion;
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// information for rotatingAxisMotion motion model
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rotatingAxisMotionInfo
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rotatingAxisInfo // information for rotatingAxisMotion motion model
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{
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rotAxis
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{
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p1 (0.561547 0.372714 0.000); // first point for the axis of rotation
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// first point for the axis of rotation
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p1 (0.561547 0.372714 0.000);
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p2 (0.561547 0.372714 0.010); // second point for the axis of rotation
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// second point for the axis of rotation
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p2 (0.561547 0.372714 0.010);
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omega 2.1; // rotation speed (rad/s)
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// rotation speed (rad/s)
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omega 2.1;
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startTime 1.25; // Start time of Geometry Rotating (s)
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// Start time of Geometry Rotating (s)
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startTime 1.25;
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// End time of Geometry Rotating (s)
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endTime 7;
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endTime 7; // End time of Geometry Rotating (s)
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}
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}
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@ -37,30 +28,24 @@ surfaces
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{
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gear
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{
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// type of the wall
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type stlWall;
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type stlWall; // type of the wall
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// file name in stl folder
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file gear.stl;
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file gear.stl; // file name in stl folder
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// material name of this wall
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material wallMat;
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material wallMat; // material name of this wall
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// motion component name
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motion rotAxis;
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motion rotAxis; // motion component name
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}
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surfaces
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surfaces
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{
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// type of the wall
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type stlWall;
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type stlWall; // type of the wall
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// file name in stl folder
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file surfaces.stl;
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file surfaces.stl; // file name in stl folder
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// material name of this wall
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material wallMat;
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material wallMat; // material name of this wall
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// motion component name
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motion none;
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motion none; // motion component name
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}
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}
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@ -2,42 +2,73 @@
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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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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 spherical particles
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*/
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defaultValue
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{
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// linear velocity (m/s)
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velocity realx3 (0 0 0);
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velocity realx3 (0 0 0); // linear velocity (m/s)
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// linear acceleration (m/s2)
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acceleration realx3 (0 0 0);
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acceleration realx3 (0 0 0); // linear acceleration (m/s2)
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// rotational velocity (rad/s)
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rVelocity realx3 (0 0 0);
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rVelocity realx3 (0 0 0); // rotational velocity (rad/s)
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// name of the particle shape
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shapeName word sphere;
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shapeName word sphere; // name of the particle shape
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}
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selectors
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{}
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{
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shapeAssigne
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{
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selector stridedRange; // other options: box, cylinder, sphere, randomPoints
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stridedRangeInfo
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{
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begin 0; // begin index of points
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end 50000; // end index of points
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stride 3; // stride for selector
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}
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fieldValue // fields that the selector is applied to
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{
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shapeName word sphere; // sets shapeName of the selected points to largeSphere
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}
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}
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}
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}
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// positions particles
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positionParticles
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positionParticles // positions particles
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{
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method ordered; // other options: random and empty
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// creates the required fields with zero particles (empty).
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method empty;
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orderedInfo
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{
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diameter 0.005; // diameter of particles
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// maximum number of particles in the simulation
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maxNumberOfParticles 50000;
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numPoints 50000; // number of particles in the simulation
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// perform initial sorting based on morton code?
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mortonSorting Yes;
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axisOrder (z x y); // axis order for filling the space with particles
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}
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regionType cylinder; // other options: box and sphere
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cylinderInfo // cylinder information for positioning particles
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{
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p1 (0.0 0.0 0.003); // begin point of cylinder axis
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p2 (0.0 0.0 0.22); // end point of cylinder axis
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radius 0.117; // radius of cylinder
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}
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}
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@ -6,43 +6,34 @@ objectName geometryDict;
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objectType dictionary;
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fileFormat ASCII;
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/*---------------------------------------------------------------------------*/
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run rotatingValve;
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// time step for integration (s)
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dt 0.00001;
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dt 0.00001; // time step for integration (s)
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// start time for simulation
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startTime 0;
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startTime 0; // start time for simulation
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// end time for simulation
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endTime 7;
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endTime 7; // end time for simulation
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// time interval for saving the simulation
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saveInterval 0.05;
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saveInterval 0.05; // time interval for saving the simulation
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// maximum number of digits for time folder
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timePrecision 6;
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timePrecision 6; // maximum number of digits for time folder
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// gravity vector (m/s2)
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g (0 -9.8 0);
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g (0 -9.8 0); // gravity vector (m/s2)
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/*
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Simulation domain every particles that goes outside this domain is deleted.
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Simulation domain every particles that goes outside this domain is deleted
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*/
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domain
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{
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min (0.397538 0.178212 0.00);
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max (0.725537 0.600214 0.06);
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}
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includeObjects (diameter); // save necessary (i.e., required) data on disk
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// integration method
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integrationMethod AdamsBashforth3;
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// exclude unnecessary data from saving on disk
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excludeObjects (rVelocity.dy1 pStructPosition.dy1 pStructVelocity.dy1);
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// report timers?
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timersReport Yes;
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integrationMethod AdamsBashforth2; // integration method
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// time interval for reporting timers
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timersReportInterval 0.01;
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writeFormat ascii; // data writting format (ascii or binary)
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timersReport Yes; // report timers: Yes or No
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timersReportInterval 0.01; // time interval for reporting timers
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