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settlingFoam: improved handling of the turbulence and wall-functions

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This commit is contained in:
Henry
2012-02-17 12:46:03 +00:00
parent f71567a71d
commit d0795f9625
25 changed files with 103 additions and 106 deletions
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18
applications/solvers/multiphase/bubbleFoam/wallFunctions.H
View File

@ -41,12 +41,6 @@
{
label faceCelli = currPatch.faceCells()[facei];
scalar yPlus =
Cmu25*y[patchi][facei]
*::sqrt(k[faceCelli])
/nub_;
// For corner cells (with two boundary or more faces),
// epsilon and G in the near-wall cell are calculated
// as an average
@ -57,13 +51,10 @@
Cmu75*::pow(k[faceCelli], 1.5)
/(kappa_*y[patchi][facei]);
if (yPlus > 11.6)
{
G[faceCelli] +=
(nutbw[facei] + nub_)*magFaceGradU[facei]
*Cmu25*::sqrt(k[faceCelli])
/(kappa_*y[patchi][facei]);
}
G[faceCelli] +=
(nutbw[facei] + nub_)*magFaceGradU[facei]
*Cmu25*::sqrt(k[faceCelli])
/(kappa_*y[patchi][facei]);
}
}
}
@ -83,6 +74,7 @@
epsilon[faceCelli] /= cellBoundaryFaceCount[faceCelli];
G[faceCelli] /= cellBoundaryFaceCount[faceCelli];
cellBoundaryFaceCount[faceCelli] = 1;
}
}
}

9
applications/solvers/multiphase/bubbleFoam/wallViscosity.H
View File

@ -20,16 +20,11 @@
// calculate yPlus
scalar yPlus =
Cmu25*y[patchi][facei]
*::sqrt(k[faceCelli])
/nub_;
Cmu25*y[patchi][facei]*::sqrt(k[faceCelli])/nub_;
if (yPlus > 11.6)
{
nutw[facei] =
yPlus*nub_*kappa_
/::log(E_*yPlus)
- nub_;
nutw[facei] = nub_*(yPlus*kappa_/::log(E_*yPlus) -1);
}
else
{

18
applications/solvers/multiphase/compressibleTwoPhaseEulerFoam/turbulenceModel/wallFunctions.H
View File

@ -41,12 +41,6 @@
{
label faceCelli = currPatch.faceCells()[facei];
scalar yPlus =
Cmu25*y[patchi][facei]
*::sqrt(k[faceCelli])
/nu2_;
// For corner cells (with two boundary or more faces),
// epsilon and G in the near-wall cell are calculated
// as an average
@ -57,13 +51,10 @@
Cmu75*::pow(k[faceCelli], 1.5)
/(kappa_*y[patchi][facei]);
if (yPlus > 11.6)
{
G[faceCelli] +=
(nut2w[facei] + nu2_)*magFaceGradU[facei]
*Cmu25*::sqrt(k[faceCelli])
/(kappa_*y[patchi][facei]);
}
G[faceCelli] +=
(nut2w[facei] + nu2_)*magFaceGradU[facei]
*Cmu25*::sqrt(k[faceCelli])
/(kappa_*y[patchi][facei]);
}
}
}
@ -83,6 +74,7 @@
epsilon[faceCelli] /= cellBoundaryFaceCount[faceCelli];
G[faceCelli] /= cellBoundaryFaceCount[faceCelli];
cellBoundaryFaceCount[faceCelli] = 1;
}
}
}

9
applications/solvers/multiphase/compressibleTwoPhaseEulerFoam/turbulenceModel/wallViscosity.H
View File

@ -20,16 +20,11 @@
// calculate yPlus
scalar yPlus =
Cmu25*y[patchi][facei]
*::sqrt(k[faceCelli])
/nu2_;
Cmu25*y[patchi][facei]*::sqrt(k[faceCelli])/nu2_;
if (yPlus > 11.6)
{
nutw[facei] =
yPlus*nu2_*kappa_
/::log(E_*yPlus)
- nu2_;
nutw[facei] = nu2_*(yPlus*kappa_/::log(E_*yPlus) - 1);
}
else
{

4
applications/solvers/multiphase/settlingFoam/UEqn.H
View File

@ -9,7 +9,9 @@
(Alpha/(scalar(1.001) - Alpha))*(sqr(rhoc)/rho)*Vdj*Vdj,
"div(phiVdj,Vdj)"
)
- fvm::laplacian(mu, U, "laplacian(muEff,U)")
- fvm::laplacian(muEff, U, "laplacian(muEff,U)")
- (fvc::grad(U) & fvc::grad(muEff))
//- fvc::div(muEff*dev2(T(fvc::grad(U))))
);
UEqn.relax();

5
applications/solvers/multiphase/settlingFoam/alphaEqn.H
View File

@ -10,13 +10,16 @@
phi + rhoc*(mesh.Sf() & fvc::interpolate(Vdj))
);
solve
fvScalarMatrix AlphaEqn
(
fvm::ddt(rho, Alpha)
+ fvm::div(phiAlpha, Alpha)
- fvm::laplacian(mut, Alpha)
);
AlphaEqn.relax();
AlphaEqn.solve();
Info<< "Solid phase fraction = "
<< Alpha.weightedAverage(mesh.V()).value()
<< " Min(Alpha) = " << min(Alpha).value()

2
applications/solvers/multiphase/settlingFoam/correctViscosity.H
View File

@ -34,4 +34,6 @@
)
+ mul;
}
mul = min(mul, muMax);
}

9
applications/solvers/multiphase/settlingFoam/createFields.H
View File

@ -61,6 +61,7 @@
dimensionedScalar rhod(transportProperties.lookup("rhod"));
dimensionedScalar muc(transportProperties.lookup("muc"));
dimensionedScalar muMax(transportProperties.lookup("muMax"));
dimensionedScalar plasticViscosityCoeff
(
@ -328,12 +329,12 @@
);
Info<< "Calculating field mu\n" << endl;
volScalarField mu
Info<< "Calculating field muEff\n" << endl;
volScalarField muEff
(
IOobject
(
"mu",
"muEff",
runTime.timeName(),
mesh,
IOobject::NO_READ,
@ -345,7 +346,7 @@
Info<< "Calculating field (g.h)f\n" << endl;
volScalarField gh("gh", g & mesh.C());
surfaceScalarField ghf(surfaceScalarField("gh", g & mesh.Cf()));
surfaceScalarField ghf("gh", g & mesh.Cf());
volScalarField p
(

18
applications/solvers/multiphase/settlingFoam/kEpsilon.H
View File

@ -5,7 +5,9 @@ if (turbulence)
y.correct();
}
dimensionedScalar k0("k0", k.dimensions(), 0);
dimensionedScalar kMin("kMin", k.dimensions(), SMALL);
dimensionedScalar epsilon0("epsilon0", epsilon.dimensions(), 0);
dimensionedScalar epsilonMin("epsilonMin", epsilon.dimensions(), SMALL);
volScalarField divU(fvc::div(phi/fvc::interpolate(rho)));
@ -28,13 +30,13 @@ if (turbulence)
+ fvm::div(phi, epsilon)
- fvm::laplacian
(
mut/sigmaEps + mul, epsilon,
mut/sigmaEps + muc, epsilon,
"laplacian(DepsilonEff,epsilon)"
)
==
C1*G*epsilon/k
C1*G*epsilon/(k + kMin)
- fvm::SuSp(C1*(1.0 - C3)*Gcoef + (2.0/3.0*C1)*rho*divU, epsilon)
- fvm::Sp(C2*rho*epsilon/k, epsilon)
- fvm::Sp(C2*rho*epsilon/(k + kMin), epsilon)
);
#include "wallDissipation.H"
@ -42,7 +44,7 @@ if (turbulence)
epsEqn.relax();
epsEqn.solve();
bound(epsilon, epsilonMin);
bound(epsilon, epsilon0);
// Turbulent kinetic energy equation
@ -52,19 +54,19 @@ if (turbulence)
+ fvm::div(phi, k)
- fvm::laplacian
(
mut/sigmak + mul, k,
mut/sigmak + muc, k,
"laplacian(DkEff,k)"
)
==
G
- fvm::SuSp(Gcoef + 2.0/3.0*rho*divU, k)
- fvm::Sp(rho*epsilon/k, k)
- fvm::Sp(rho*epsilon/(k + kMin), k)
);
kEqn.relax();
kEqn.solve();
bound(k, kMin);
bound(k, k0);
//- Re-calculate viscosity
@ -73,4 +75,4 @@ if (turbulence)
#include "wallViscosity.H"
}
mu = mut + mul;
muEff = mut + mul;

12
applications/solvers/multiphase/settlingFoam/settlingFoam.C
View File

@ -2,7 +2,7 @@
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011 OpenFOAM Foundation
\\ / A nd | Copyright (C) 2011-2012 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
@ -57,11 +57,15 @@ int main(int argc, char *argv[])
Info<< "\nStarting time loop\n" << endl;
while (runTime.loop())
while (runTime.run())
{
Info<< "Time = " << runTime.timeName() << nl << endl;
#include "readTimeControls.H"
#include "compressibleCourantNo.H"
#include "setDeltaT.H"
runTime++;
Info<< "Time = " << runTime.timeName() << nl << endl;
#include "rhoEqn.H"

29
applications/solvers/multiphase/settlingFoam/wallFunctions.H
View File

@ -1,9 +1,10 @@
{
labelList cellBoundaryFaceCount(epsilon.size(), 0);
scalar Cmu25 = ::pow(Cmu.value(), 0.25);
scalar Cmu75 = ::pow(Cmu.value(), 0.75);
scalar kappa_ = kappa.value();
const scalar Cmu25 = ::pow(Cmu.value(), 0.25);
const scalar Cmu75 = ::pow(Cmu.value(), 0.75);
const scalar kappa_ = kappa.value();
const scalar muc_ = muc.value();
const fvPatchList& patches = mesh.boundary();
@ -32,9 +33,6 @@
if (isA<wallFvPatch>(curPatch))
{
const scalarField& rhow = rho.boundaryField()[patchi];
const scalarField muw(mul.boundaryField()[patchi]);
const scalarField& mutw = mut.boundaryField()[patchi];
scalarField magFaceGradU
@ -46,10 +44,6 @@
{
label faceCelli = curPatch.faceCells()[facei];
scalar yPlus =
Cmu25*y[patchi][facei]*::sqrt(k[faceCelli])
/(muw[facei]/rhow[facei]);
// For corner cells (with two boundary or more faces),
// epsilon and G in the near-wall cell are calculated
// as an average
@ -57,16 +51,14 @@
cellBoundaryFaceCount[faceCelli]++;
epsilon[faceCelli] +=
Cmu75*rho[faceCelli]*::pow(k[faceCelli], 1.5)
Cmu75*::pow(k[faceCelli], 1.5)
/(kappa_*y[patchi][facei]);
if (yPlus > 11.6)
{
G[faceCelli] +=
mutw[facei]*magFaceGradU[facei]
*Cmu25*::sqrt(k[faceCelli])
/(kappa_*y[patchi][facei]);
}
G[faceCelli] +=
(mutw[facei] + muc_)
*magFaceGradU[facei]
*Cmu25*::sqrt(k[faceCelli])
/(kappa_*y[patchi][facei]);
}
}
}
@ -86,6 +78,7 @@
epsilon[faceCelli] /= cellBoundaryFaceCount[faceCelli];
G[faceCelli] /= cellBoundaryFaceCount[faceCelli];
cellBoundaryFaceCount[faceCelli] = 1;
}
}
}

16
applications/solvers/multiphase/settlingFoam/wallViscosity.H
View File

@ -1,7 +1,9 @@
{
scalar Cmu25 = ::pow(Cmu.value(), 0.25);
scalar kappa_ = kappa.value();
scalar E_ = E.value();
const scalar Cmu25 = ::pow(Cmu.value(), 0.25);
const scalar kappa_ = kappa.value();
const scalar E_ = E.value();
const scalar muc_ = muc.value();
const scalar nuc_ = muc_/rhoc.value();
const fvPatchList& patches = mesh.boundary();
@ -11,9 +13,6 @@
if (isA<wallFvPatch>(curPatch))
{
const scalarField& rhow = rho.boundaryField()[patchi];
const scalarField muw(mul.boundaryField()[patchi]);
scalarField& mutw = mut.boundaryField()[patchi];
forAll(curPatch, facei)
@ -22,13 +21,12 @@
scalar yPlus =
Cmu25*y[patchi][facei]*::sqrt(k[faceCelli])
/(muw[facei]/rhow[facei]);
/nuc_;
if (yPlus > 11.6)
{
mutw[facei] =
muw[facei]
*(yPlus*kappa_/::log(E_*yPlus) - 1);
muc_*(yPlus*kappa_/::log(E_*yPlus) - 1);
}
else
{

5
tutorials/multiphase/settlingFoam/ras/dahl/0/U
View File

@ -23,12 +23,13 @@ boundaryField
inlet
{
type fixedValue;
value uniform (0.0191 0 0);
value $internalField;
}
outlet
{
type zeroGradient;
type pressureInletOutletVelocity;
value uniform (0 0 0);
}
bottomWall

5
tutorials/multiphase/settlingFoam/ras/dahl/0/alpha
View File

@ -23,12 +23,13 @@ boundaryField
inlet
{
type fixedValue;
value uniform 0.001;
value $internalField;
}
outlet
{
type zeroGradient;
type inletOutlet;
inletValue $internalField;
}
bottomWall

5
tutorials/multiphase/settlingFoam/ras/dahl/0/epsilon
View File

@ -23,12 +23,13 @@ boundaryField
inlet
{
type fixedValue;
value uniform 1.50919e-06;
value $internalField;
}
outlet
{
type zeroGradient;
type inletOutlet;
inletValue $internalField;
}
bottomWall

5
tutorials/multiphase/settlingFoam/ras/dahl/0/k
View File

@ -23,12 +23,13 @@ boundaryField
inlet
{
type fixedValue;
value uniform 0.00015;
value $internalField;
}
outlet
{
type zeroGradient;
type inletOutlet;
inletValue $internalField;
}
bottomWall

6
tutorials/multiphase/settlingFoam/ras/dahl/0/p_rgh
View File

@ -22,7 +22,8 @@ boundaryField
{
inlet
{
type zeroGradient;
type buoyantPressure;
value uniform 0;
}
outlet
@ -39,7 +40,8 @@ boundaryField
endWall
{
type zeroGradient;
type buoyantPressure;
value uniform 0;
}
top

2
tutorials/multiphase/settlingFoam/ras/dahl/constant/polyMesh/blockMeshDict
View File

@ -63,7 +63,7 @@ boundary
}
bottomWall
{
type patch;
type wall;
faces
(
(0 1 7 6)

2
tutorials/multiphase/settlingFoam/ras/dahl/constant/polyMesh/boundary
View File

@ -31,7 +31,7 @@ FoamFile
}
bottomWall
{
type patch;
type wall;
nFaces 200;
startFace 15804;
}

2
tutorials/multiphase/settlingFoam/ras/dahl/constant/transportProperties
View File

@ -29,6 +29,8 @@ yieldStressExponent yieldStressExponent [ 0 0 0 0 0 0 0 ] 1050.8;
yieldStressOffset yieldStressOffset [ 0 0 0 0 0 0 0 ] 0;
muMax muMax [ 1 -1 -1 0 0 0 0 ] 10.0;
rhoc rhoc [ 1 -3 0 0 0 0 0 ] 996;
rhod rhod [ 1 -3 0 0 0 0 0 ] 1996;

8
tutorials/multiphase/settlingFoam/ras/dahl/system/controlDict
View File

@ -27,7 +27,7 @@ endTime 6400;
deltaT 0.1;
writeControl runTime;
writeControl adjustableRunTime;
writeInterval 20;
@ -45,4 +45,10 @@ timePrecision 6;
runTimeModifiable yes;
adjustTimeStep on;
maxCo 0.5;
maxDeltaT 1;
// ************************************************************************* //

6
tutorials/multiphase/settlingFoam/ras/dahl/system/fvSchemes
View File

@ -28,9 +28,9 @@ gradSchemes
divSchemes
{
default none;
div(phi,U) Gauss limitedLinearV 1;
div(phi,k) Gauss limitedLinear 1;
div(phi,epsilon) Gauss limitedLinear 1;
div(phi,U) Gauss linearUpwind grad(U);
div(phi,k) Gauss upwind;
div(phi,epsilon) Gauss upwind;
div(phiAlpha,Alpha) Gauss limitedLinear01 1;
div(phiVdj,Vdj) Gauss linear;
}

11
tutorials/multiphase/settlingFoam/ras/dahl/system/fvSolution
View File

@ -36,14 +36,14 @@ solvers
{
solver PBiCG;
preconditioner DILU;
tolerance 1e-07;
tolerance 1e-8;
relTol 0.1;
}
"(U|Alpha|k|epsilon)Final"
{
$k;
tolerance 1e-07;
tolerance 1e-8;
relTol 0;
}
@ -51,21 +51,21 @@ solvers
{
solver PCG;
preconditioner DIC;
tolerance 1e-07;
tolerance 1e-8;
relTol 0.1;
}
rhoFinal
{
$rho;
tolerance 1e-07;
tolerance 1e-8;
relTol 0;
}
}
PIMPLE
{
nCorrectors 2;
nCorrectors 3;
nNonOrthogonalCorrectors 0;
}
@ -76,6 +76,7 @@ relaxationFactors
}
equations
{
"Alpha.*" 1;
"U.*" 1;
"k.*" 1;
"epsilon.*" 1;

2
tutorials/multiphase/settlingFoam/ras/tank3D/constant/transportProperties
View File

@ -29,6 +29,8 @@ yieldStressExponent yieldStressExponent [ 0 0 0 0 0 0 0 ] 95.25;
yieldStressOffset yieldStressOffset [ 0 0 0 0 0 0 0 ] 0;
muMax muMax [ 1 -1 -1 0 0 0 0 ] 10.0;
rhoc rhoc [ 1 -3 0 0 0 0 0 ] 1000;
rhod rhod [ 1 -3 0 0 0 0 0 ] 1042;

1
tutorials/multiphase/settlingFoam/ras/tank3D/system/fvSolution
View File

@ -76,6 +76,7 @@ relaxationFactors
}
equations
{
"Alpha.*" 1;
"U.*" 1;
"k.*" 1;
"epsilon.*" 1;