大家好！
我现在利用interPhaseChangeFoam里面的LES 一方程涡粘模型 计算绕Clark-Y水翼空化流动，计算出的升力系数cl比试验值偏大一倍，总的空穴体积小与实验值。我分析是我计算的 流场压力，出了问题，我感觉主要可能是离散格式 和求解器的问题，请问谁 利用interPhaseChangeFoam里面的LES计算过水翼空化呢？ 可以分享一下经验吗？
谢谢!
求解器设置
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 4.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object fvSolution;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
solvers
{
alpha.water
{
nAlphaCorr 1;
nAlphaSubCycles 1;
cAlpha 1;
MULESCorr yes;
nLimiterIter 5;
solver smoothSolver;
smoother symGaussSeidel;
tolerance 1e-8;
relTol 0;
maxIter 100;
}
alpha.waterFinal
{
nAlphaCorr 1;
nAlphaSubCycles 1;
cAlpha 1;
MULESCorr yes;
nLimiterIter 5;
solver smoothSolver;
smoother symGaussSeidel;
tolerance 1e-8;
relTol 0;
maxIter 100;
}
"U.*"
{
solver smoothSolver;
smoother symGaussSeidel;
tolerance 1e-6;
relTol 0;
};
".*(rho|rhoFinal)"
{
solver diagonal;
}
pcorr
{
solver PCG;
preconditioner
{
preconditioner GAMG;
tolerance 1e-05;
relTol 0;
smoother DICGaussSeidel;
}
tolerance 1e-05;
relTol 0;
maxIter 500;
}
pcorrFinal
{
solver PCG;
preconditioner
{
preconditioner GAMG;
tolerance 1e-05;
relTol 0;
smoother DICGaussSeidel;
}
tolerance 1e-05;
relTol 0;
maxIter 500;
}
Phi
{
$p_rgh;
relTol 0;
};
p_rgh
{
solver GAMG;
tolerance 1e-07;
relTol 0.00001;
smoother DIC;
}
p_rghFinal
{
solver PCG;
preconditioner
{
preconditioner GAMG;
tolerance 1e-07;
relTol 0;
nVcycles 2;
smoother DICGaussSeidel;
nPreSweeps 2;
}
tolerance 1e-07;
relTol 0;
maxIter 1000;
}
U
{
solver smoothSolver;
smoother GaussSeidel;
tolerance 1e-06;
relTol 0;
nSweeps 1;
}
"(U|k|omega)"
{
solver smoothSolver;
smoother symGaussSeidel;
tolerance 1e-08;
relTol 0.0001;
}
"(T|k|B|nuTilda).*"
{
solver smoothSolver;
smoother symGaussSeidel;
tolerance 1e-08;
relTol 0;
maxIter 100;
}
"(U|k|omega)Final"
{
solver smoothSolver;
smoother symGaussSeidel;
tolerance 1e-08;
relTol 0;
}
}
PIMPLE
{
momentumPredictor no;
transonic no;
nOuterCorrectors 1;
nCorrectors 2;
nNonOrthogonalCorrectors 0;
}
// ************************************************************************* //
离散格式设置
/*--------------------------------*- C++ -*----------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 4.0 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
FoamFile
{
version 2.0;
format ascii;
class dictionary;
location "system";
object fvSchemes;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
ddtSchemes
{
default Euler;
}
gradSchemes
{
default Gauss linear;
}
divSchemes
{
default none;
div(phi,alpha) Gauss vanLeer;
div(phirb,alpha) Gauss linear;
div(phi,rho) Gauss limitedLinear 1;
div(rhoPhi,U) Gauss linearUpwind grad(U);
div(phi,thermo:rho.water) Gauss upwind;
div(phi,thermo:rho.air) Gauss upwind;
div(rhoPhi,T) Gauss upwind;
div(rhoPhi,K) Gauss upwind;
div(phi,p) Gauss upwind;
div(phi,k) Gauss upwind;
div(rhoPhi,omega) Gauss limitedLinear 1;
div(phi,omega) Gauss upwind;
div(rhoPhi,k) Gauss upwind;
div(((rho*nuEff)*dev2(T(grad(U))))) Gauss linear;
}
laplacianSchemes
{
default Gauss linear limited corrected 0.33;
}
interpolationSchemes
{
default linear;
}
snGradSchemes
{
default limited corrected 0.33;
}
wallDist
{
method meshWave;
}
// ************************************************************************* //
