| Dude0066 |
January 13, 2020 12:33 |
DPMFoam and this Message: new cannot satisfy memory request.
1 Attachment(s)
Dear all,
I am a beginner in CFD. I have to hand this project soon and any quick help is appreciated.
The project title is a single particle trajectory between two parallel walls in an airflow. I extracted the Geometry from Blender and used snappyHexMesh. I faced too many errors and I solved them. right now there is a problem which I could not solve it. I will upload all the relevant files and the final error.
N.B.: I cannot upload the .stl files
controlDict
Code:
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object controlDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
application DPMFoam;
startFrom latestTime;
startTime 0;
stopAt endTime;
endTime 9e-18;
deltaT 9e-20;
writeControl runTime;
writeInterval 0.01;
purgeWrite 0;
writeFormat binary;
writePrecision 6;
writeCompression uncompressed;
timeFormat general;
timePrecision 6;
runTimeModifiable yes;
// ************************************************************************* //
snappyHexMesh
Code:
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object blockMeshDict;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Which of the steps to run
castellatedMesh true; // make basic mesh ?
snap true; // decide to snap back to surface ?
addLayers true; // decide to add viscous layers ?
geometry // Load in STL files here
{
inlet.stl {type triSurfaceMesh; name inlet;}
outlet.stl {type triSurfaceMesh; name outlet;}
//cube.stl {type triSurfaceMesh; name cube;}
box.stl {type triSurfaceMesh; name box;}
refinementBox {type searchableBox; min (-0.707107 -0.707107 -1) ; max (1 1 1);}
};
castellatedMeshControls
{
maxLocalCells 1000000; //max cells per CPU core
maxGlobalCells 2000000; //max cells to use before mesh deletion step
minRefinementCells 10; //was 0 - zero means no bad cells are allowed during refinement stages
maxLoadUnbalance 0.10;
nCellsBetweenLevels 1; // expansion factor between each high & low refinement zone
// Explicit feature edge refinement
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
features // taken from STL from each .eMesh file created by "SurfaceFeatureExtract" command
(
{file "inlet.eMesh"; level 3;}
{file "outlet.eMesh"; level 3;}
//{file "cube.eMesh"; level 3;}
{file "box.eMesh"; level 3;}
);
// Surface based refinement
// ~~~~~~~~~~~~~~~~~~~~~~~~
refinementSurfaces // Surface-wise min and max refinement level
{
inlet {level (0 0);}
outlet {level (0 0);}
// cube {level (3 3);}
box {level (5 5);} // was 4 4
}
resolveFeatureAngle 60; // Resolve sharp angles // Default 30
refinementRegions // In descending levels of fine-ness
//{volume {mode distance; levels ((0.0006 4) (0.002 3) (0.01 2));}} // was ((0.001 //4) (0.003 3) (0.01 2))
{
}
locationInMesh (0.00336 0.00065 0.0056); //to decide which side of mesh to keep **
allowFreeStandingZoneFaces true;
}
// Settings for the snapping.
snapControls
{
nSmoothPatch 3;
tolerance 4.0;
nSolveIter 30;
nRelaxIter 5;
nFeatureSnapIter 15; // default is 10
// New settings from openfoam 2.2 onwards for SHMesh
implicitFeatureSnap false; // default is false - detects without doing surfaceFeatureExtract
explicitFeatureSnap true; // default is true
multiRegionFeatureSnap false; // deafault is false - detects features between multiple surfaces
}
// Settings for the layer addition.
addLayersControls //add the PATCH names from inside the STL file so STLpatchName_insideSTLName
{
relativeSizes false; // was true
layers
{
//cube
//{nSurfaceLayers 3;} // was 3
box
{nSurfaceLayers 3;} // was 3
}
expansionRatio 1.3;
finalLayerThickness 0.00016; //was 0.00016
minThickness 0.00008; //was 0.00008
nGrow 0; // was 1
// Advanced settings
featureAngle 80; // was 70 //- When not to extrude surface. 0 is flat, 90 is right angle.
nRelaxIter 3; //- Max# of snapping relaxation iter. Should stop before upon reaching a correct mesh.
nSmoothSurfaceNormals 1; // Number of smoothing iterations of surface normals
nSmoothNormals 3; // Number of smoothing iterations of interior mesh movement direction
nSmoothThickness 10; // Smooth layer thickness over surface patches
maxFaceThicknessRatio 0.5; // Stop layer growth on highly warped cells
maxThicknessToMedialRatio 0.3; // Reduce layer growth where ratio thickness to medial distance is large
minMedianAxisAngle 130; // Angle used to pick up medial axis points
nBufferCellsNoExtrude 0; // Create buffer region for new layer terminations
nLayerIter 50; // Overall max number of layer addition iterations
}
// Generic mesh quality settings. At any undoable phase these determine
// where to undo.
meshQualityControls
{
maxNonOrtho 65;
maxBoundarySkewness 20;
maxInternalSkewness 4;
maxConcave 80;
minFlatness -1;
minVol 0;
minTetQuality 1e-9;
minArea -1;
minTwist 0.02;
minDeterminant 0.001;
minFaceWeight 0.05;
minVolRatio 0.01;
minTriangleTwist -1;
// Advanced
nSmoothScale 4;
errorReduction 0.75;
}
// Advanced
debug 0;
// Merge tolerance. Is fraction of overall bounding box of initial mesh.
// Note: the write tolerance needs to be higher than this.
mergeTolerance 1E-6;
// ************************************************************************* //
boundary conditions:
Pressure:
Code:
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
object p;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dimensions [0 2 -2 0 0 0 0];
internalField uniform 0;
boundaryField
{
inlet
{
type fixedFluxPressure;
phi phi.air;
value $internalField;
}
outlet
{
type fixedFluxPressure;
phi phi.air;
value $internalField;
}
box
{
type fixedValue;
phi phi.air;
value $internalField;
}
//frontAndBack
//{
//type symmetry;
//}
}
// ************************************************************************* //
Velicity:
Code:
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format binary;
class volVectorField;
location "0";
object U.air;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
dimensions [0 1 -1 0 0 0 0];
internalField uniform (0 0 0);
boundaryField
{
inlet
{
type noSlip;
}
outlet
{
type pressureInletOutletVelocity;
phi phi.air;
inletValue uniform (0 0 0);
value uniform (0 0 0);
}
box
{
type interstitialInletVelocity;
inletVelocity uniform (0 0 1.875);
value uniform (0 0 1.875);
phi phi.air;
alpha alpha.air;
}
//frontAndBack
//{
//type symmetry;
//}
}
// ************************************************************************* //
kinematicCloudPositions:
Quote:
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class vectorField;
object kinematicCloudPositions;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
(
(-0.0028539742636777858 0.0071920138515102 0.00017708281805652992)
)
// ************************************************** *********************** //
|
kinematicCloudProperties:
Quote:
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "constant";
object particleProperties;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
solution
{
active true;
coupled true;
transient yes;
cellValueSourceCorrection off;
interpolationSchemes
{
rho.air cell;
U.air cellPoint;
mu.air cell;
}
integrationSchemes
{
U Euler;
}
sourceTerms
{
schemes
{
U semiImplicit 1;
}
}
}
constantProperties
{
parcelTypeId 1;
rhoMin 1e-15;
minParcelMass 1e-15;
rho0 2526;
youngsModulus 1e8;
poissonsRatio 0.35;
constantVolume false;
alphaMax 0.99;
}
subModels
{
particleForces
{
ErgunWenYuDrag
{
alphac alpha.air;
}
gravity;
}
injectionModels
{
model1
{
type manualInjection;
massTotal 0;
parcelBasisType fixed;
nParticle 1;
SOI 0;
positionsFile "kinematicCloudPositions";
U0 (0 0 0);
sizeDistribution
{
type fixedValue;
fixedValueDistribution
{
value 0.0025;
}
}
}
}
dispersionModel none;
patchInteractionModel localInteraction;
localInteractionCoeffs
{
patches
(
inlet
{
type rebound;
e 0.97;
mu 0.09;
}
outlet
{
type rebound;
e 0.97;
mu 0.09;
}
box
{
type rebound;
e 0.97;
mu 0.09;
}
//frontAndBack
//{
//type rebound;
//e 0.97;
//mu 0.09;
//}
);
}
StandardWallInteractionCoeffs
{
type rebound;
e 0.97;
mu 0.09;
}
heatTransferModel none;
surfaceFilmModel none;
collisionModel pairCollision;
pairCollisionCoeffs
{
maxInteractionDistance 0.0025;
writeReferredParticleCloud no;
pairModel pairSpringSliderDashpot;
pairSpringSliderDashpotCoeffs
{
useEquivalentSize no;
alpha 0.02;
b 1.5;
mu 0.10;
cohesionEnergyDensity 0;
collisionResolutionSteps 12;
};
wallModel wallSpringSliderDashpot;
wallSpringSliderDashpotCoeffs
{
useEquivalentSize no;
collisionResolutionSteps 12;
youngsModulus 1e8;
poissonsRatio 0.23;
alpha 0.01;
b 1.5;
mu 0.09;
cohesionEnergyDensity 0;
};
U U.air;
}
stochasticCollisionModel none;
radiation off;
}
cloudFunctions
{}
// ************************************************** *********************** //
|
fvSchemes:
Code:
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
object fvSchemes;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
ddtSchemes
{
default Euler;
}
gradSchemes
{
default Gauss linear;
}
divSchemes
{
default none;
div(alphaPhic,U.air) Gauss linearUpwindV unlimited;
div(((alpha.air*nuEff.air)*dev2(T(grad(U.air))))) Gauss linear;
}
laplacianSchemes
{
default Gauss linear corrected;
}
interpolationSchemes
{
default linear;
}
snGradSchemes
{
default corrected;
}
// ************************************************************************* //
fvSolution:
Quote:
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 5 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object fvSolution;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
solvers
{
"(p|kinematicCloud:theta)"
{
solver GAMG;
tolerance 1e-06;
relTol 0.01;
smoother GaussSeidel;
}
"(p|kinematicCloud:theta)Final"
{
solver GAMG;
tolerance 1e-06;
relTol 0;
smoother GaussSeidel;
}
"(U.air|k|omega)"
{
solver smoothSolver;
smoother symGaussSeidel;
tolerance 1e-05;
relTol 0.1;
}
"(U.air|k|omega)Final"
{
solver smoothSolver;
smoother symGaussSeidel;
tolerance 1e-05;
relTol 0;
}
}
PIMPLE
{
nOuterCorrectors 1;
nCorrectors 2;
momentumPredictor yes;
nNonOrthogonalCorrectors 0;
pRefCell 0;
pRefValue 0;
}
relaxationFactors
{
}
// ************************************************** *********************** //
|
Thank you in advance.
Amir |
