OpenFoamのサンプル確認（パラメータやキーワードの覚書）です。
バージョン : Windows版（OpenFOAM-v2106-windows-mingw.exe）
チュートリアルフォルダ：チュートリアル場所（windows）
引用元
<チュートリアルフォルダ>\compressible\rhoPimpleFoam\RAS
結果図
流体速度のモデルになります。
作業
基本的な流れはT703 OpenFoam tipsと同じです。（または作業）
//チュートリアルからサンプルをコピーしておきます。// //コマンド:メッシュ作成 blockMesh //計算実行// rhoPimpleFoam //ParaView用VTK変換// foamToVTK
モデル
設定値の抜粋まとめ
endTimeを10に変更
全体構造
//初期フォルダ・ファイル構成 cavity ├ 0 │ ├ alphat │ ├ epsilon │ ├ k │ ├ nut │ ├ omega │ ├ p │ ├ T │ └ U ├ constant │ ├ thermophysicalProperties ：物性値 │ └ turbulenceProperties └ system ├ blockMeshDict :ブロックメッシュ定義 ├ controlDict ：解析ジョブ設定 ├ fvSchemes ：ソルバー設定 └ fvSolution ：ソルバー設定
0
設定確認 alphat
dimensions [1 -1 -1 0 0 0 0];
internalField uniform 0;
boundaryField
{
movingWall
{
type compressible::alphatWallFunction;
Prt 0.85;
value uniform 0;
}
fixedWalls
{
type compressible::alphatWallFunction;
Prt 0.85;
value uniform 0;
}
frontAndBack
{
type empty;
}
}
設定確認 epsilon
dimensions [0 2 -3 0 0 0 0];
internalField uniform 0.000765;
boundaryField
{
movingWall
{
type epsilonWallFunction;
value $internalField;
}
fixedWalls
{
type epsilonWallFunction;
value $internalField;
}
frontAndBack
{
type empty;
}
}
設定確認 k
dimensions [0 2 -2 0 0 0 0];
internalField uniform 0.00325;
boundaryField
{
movingWall
{
type kqRWallFunction;
value uniform 0.00325;
}
fixedWalls
{
type kqRWallFunction;
value uniform 0.00325;
}
frontAndBack
{
type empty;
}
}
設定確認 nut
dimensions [0 2 -1 0 0 0 0];
internalField uniform 0;
boundaryField
{
movingWall
{
type nutkWallFunction;
Cmu 0.09;
kappa 0.41;
E 9.8;
value uniform 0;
}
fixedWalls
{
type nutkWallFunction;
Cmu 0.09;
kappa 0.41;
E 9.8;
value uniform 0;
}
frontAndBack
{
type empty;
}
}
設定確認 omega
dimensions [0 0 -1 0 0 0 0];
internalField uniform 2.6;
boundaryField
{
movingWall
{
type omegaWallFunction;
Cmu 0.09;
kappa 0.41;
E 9.8;
value uniform 2.6;
}
fixedWalls
{
type omegaWallFunction;
Cmu 0.09;
kappa 0.41;
E 9.8;
value uniform 2.6;
}
frontAndBack
{
type empty;
}
}
設定確認 p
//ファイル：p//
dimensions [1 -1 -2 0 0 0 0];
internalField uniform 100000;
boundaryField
{
movingWall
{
type zeroGradient;
}
fixedWalls
{
type zeroGradient;
}
frontAndBack
{
type empty;
}
}
設定確認 T
dimensions [0 0 0 1 0 0 0];
internalField uniform 300;
boundaryField
{
movingWall
{
type zeroGradient;
}
fixedWalls
{
type zeroGradient;
}
frontAndBack
{
type empty;
}
}
設定確認 U
dimensions [0 1 -1 0 0 0 0];
internalField uniform (0 0 0);
boundaryField
{
movingWall
{
type fixedValue;
value uniform (1 0 0);
}
fixedWalls
{
type fixedValue;
value uniform (0 0 0);
}
frontAndBack
{
type empty;
}
}
constant
設定確認 thermophysicalProperties
thermoType
{
type hePsiThermo;
mixture pureMixture;
transport const;
thermo hConst;
equationOfState perfectGas;
specie specie;
energy sensibleEnthalpy;
}
mixture
{
specie
{
molWeight 28.9;
}
thermodynamics
{
Cp 1007;
Hf 0;
}
transport
{
mu 1.84e-05;
Pr 0.7;
}
}
設定確認 turbulenceProperties
simulationType RAS;
RAS
{
RASModel kOmegaSST;
turbulence on;
printCoeffs on;
}
system
設定確認 blockMeshDict
scale 0.1;
vertices
(
(0 0 0)
(1 0 0)
(1 1 0)
(0 1 0)
(0 0 0.1)
(1 0 0.1)
(1 1 0.1)
(0 1 0.1)
);
blocks
(
hex (0 1 2 3 4 5 6 7) (20 20 1) simpleGrading (1 1 1)
);
edges
(
);
boundary
(
movingWall
{
type wall;
faces
(
(3 7 6 2)
);
}
fixedWalls
{
type wall;
faces
(
(0 4 7 3)
(2 6 5 1)
(1 5 4 0)
);
}
frontAndBack
{
type empty;
faces
(
(0 3 2 1)
(4 5 6 7)
);
}
);
mergePatchPairs
(
);
設定確認 controlDict
endTimeを変更
application rhoPimpleFoam; startFrom startTime; startTime 0; stopAt endTime; endTime 10; deltaT 0.01; writeControl runTime; writeInterval 0.1; purgeWrite 0; writeFormat binary; writePrecision 10; writeCompression off; timeFormat general; timePrecision 6; runTimeModifiable true; adjustTimeStep no; maxCo 0.3; maxDeltaT 1;
設定確認 fvSchemes
ddtSchemes
{
default Euler;
}
gradSchemes
{
default Gauss linear;
}
divSchemes
{
default none;
div(phi,U) Gauss limitedLinearV 1;
div(U) Gauss linear;
div(phid,p) Gauss limitedLinear 1;
div(phi,K) Gauss linear;
div(phi,h) Gauss limitedLinear 1;
turbulence Gauss limitedLinear 1;
div(phi,k) $turbulence;
div(phi,epsilon) $turbulence;
div(phi,R) $turbulence;
div(phi,omega) $turbulence;
div((rho*R)) Gauss linear;
div(R) Gauss linear;
div(((rho*nuEff)*dev2(T(grad(U))))) Gauss linear;
}
laplacianSchemes
{
default Gauss linear orthogonal;
}
interpolationSchemes
{
default linear;
}
snGradSchemes
{
default orthogonal;
}
wallDist
{
method meshWave;
}
設定確認 fvSolution
solvers
{
p
{
solver PCG;
preconditioner DIC;
tolerance 1e-06;
relTol 0.01;
}
pFinal
{
$p;
relTol 0;
}
"rho.*"
{
$p;
tolerance 1e-05;
relTol 0;
}
"(U|h|R|k|epsilon|omega)"
{
solver smoothSolver;
smoother symGaussSeidel;
tolerance 1e-05;
relTol 0.1;
}
"(U|h|R|k|epsilon|omega)Final"
{
$U;
relTol 0;
}
}
PIMPLE
{
momentumPredictor yes;
nOuterCorrectors 1;
nCorrectors 2;
finalOnLastPimpleIterOnly true;
nNonOrthogonalCorrectors 0;
pMax 1.2e5;
pMin 0.8e5;
}
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