applications/solvers/compressible/rhoCentralFoam/rhoCentralDyMFoam/rhoCentralDyMFoam.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   4    \\    /   O peration     |
   5     \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
   6      \\/     M anipulation  |
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of OpenFOAM.
  10
  11     OpenFOAM is free software: you can redistribute it and/or modify it
  12     under the terms of the GNU General Public License as published by
  13     the Free Software Foundation, either version 3 of the License, or
  14     (at your option) any later version.
  15
  16     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
  17     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  18     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  19     for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 Application
  25     rhoCentralDyMFoam
  26
  27 Description
  28     Density-based compressible flow solver based on central-upwind schemes of
  29     Kurganov and Tadmor
  30
  31 \*---------------------------------------------------------------------------*/
  32
  33 #include "fvCFD.H"
  34 #include "basicPsiThermo.H"
  35 #include "turbulenceModel.H"
  36 #include "zeroGradientFvPatchFields.H"
  37 #include "fixedRhoFvPatchScalarField.H"
  38 #include "motionSolver.H"
  39
  40 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  41
  42 int main(int argc, char *argv[])
  43 {
  44     #include "setRootCase.H"
  45
  46     #include "createTime.H"
  47     #include "createMesh.H"
  48     #include "createFields.H"
  49     #include "readThermophysicalProperties.H"
  50     #include "readTimeControls.H"
  51
  52     // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  53
  54     #include "readFluxScheme.H"
  55
  56     dimensionedScalar v_zero("v_zero", dimVolume/dimTime, 0.0);
  57
  58     Info<< "\nStarting time loop\n" << endl;
  59
  60     autoPtr<Foam::motionSolver> motionPtr = motionSolver::New(mesh);
  61
  62     while (runTime.run())
  63     {
  64         // --- upwind interpolation of primitive fields on faces
  65
  66         surfaceScalarField rho_pos
  67         (
  68             fvc::interpolate(rho, pos, "reconstruct(rho)")
  69         );
  70         surfaceScalarField rho_neg
  71         (
  72             fvc::interpolate(rho, neg, "reconstruct(rho)")
  73         );
  74
  75         surfaceVectorField rhoU_pos
  76         (
  77             fvc::interpolate(rhoU, pos, "reconstruct(U)")
  78         );
  79         surfaceVectorField rhoU_neg
  80         (
  81             fvc::interpolate(rhoU, neg, "reconstruct(U)")
  82         );
  83
  84         volScalarField rPsi(1.0/psi);
  85         surfaceScalarField rPsi_pos
  86         (
  87             fvc::interpolate(rPsi, pos, "reconstruct(T)")
  88         );
  89         surfaceScalarField rPsi_neg
  90         (
  91             fvc::interpolate(rPsi, neg, "reconstruct(T)")
  92         );
  93
  94         surfaceScalarField e_pos
  95         (
  96             fvc::interpolate(e, pos, "reconstruct(T)")
  97         );
  98         surfaceScalarField e_neg
  99         (
 100             fvc::interpolate(e, neg, "reconstruct(T)")
 101         );
 102
 103         surfaceVectorField U_pos(rhoU_pos/rho_pos);
 104         surfaceVectorField U_neg(rhoU_neg/rho_neg);
 105
 106         surfaceScalarField p_pos(rho_pos*rPsi_pos);
 107         surfaceScalarField p_neg(rho_neg*rPsi_neg);
 108
 109         surfaceScalarField phiv_pos(U_pos & mesh.Sf());
 110         surfaceScalarField phiv_neg(U_neg & mesh.Sf());
 111
 112         volScalarField c(sqrt(thermo.Cp()/thermo.Cv()*rPsi));
 113         surfaceScalarField cSf_pos
 114         (
 115             fvc::interpolate(c, pos, "reconstruct(T)")*mesh.magSf()
 116         );
 117         surfaceScalarField cSf_neg
 118         (
 119             fvc::interpolate(c, neg, "reconstruct(T)")*mesh.magSf()
 120         );
 121
 122         surfaceScalarField ap
 123         (
 124             max(max(phiv_pos + cSf_pos, phiv_neg + cSf_neg), v_zero)
 125         );
 126         surfaceScalarField am
 127         (
 128             min(min(phiv_pos - cSf_pos, phiv_neg - cSf_neg), v_zero)
 129         );
 130
 131         surfaceScalarField a_pos(ap/(ap - am));
 132
 133         surfaceScalarField amaxSf("amaxSf", max(mag(am), mag(ap)));
 134
 135         surfaceScalarField aSf(am*a_pos);
 136
 137         if (fluxScheme == "Tadmor")
 138         {
 139             aSf = -0.5*amaxSf;
 140             a_pos = 0.5;
 141         }
 142
 143         surfaceScalarField a_neg(1.0 - a_pos);
 144
 145         phiv_pos *= a_pos;
 146         phiv_neg *= a_neg;
 147
 148         surfaceScalarField aphiv_pos(phiv_pos - aSf);
 149         surfaceScalarField aphiv_neg(phiv_neg + aSf);
 150
 151         // Reuse amaxSf for the maximum positive and negative fluxes
 152         // estimated by the central scheme
 153         amaxSf = max(mag(aphiv_pos), mag(aphiv_neg));
 154
 155         #include "compressibleCourantNo.H"
 156         #include "readTimeControls.H"
 157         #include "setDeltaT.H"
 158
 159         runTime++;
 160
 161         Info<< "Time = " << runTime.timeName() << nl << endl;
 162
 163         mesh.movePoints(motionPtr->newPoints());
 164         phiv_pos = U_pos & mesh.Sf();
 165         phiv_neg = U_neg & mesh.Sf();
 166         fvc::makeRelative(phiv_pos, U);
 167         fvc::makeRelative(phiv_neg, U);
 168         phiv_neg -= mesh.phi();
 169         phiv_pos *= a_pos;
 170         phiv_neg *= a_neg;
 171         aphiv_pos = phiv_pos - aSf;
 172         aphiv_neg = phiv_neg + aSf;
 173
 174         surfaceScalarField phi("phi", aphiv_pos*rho_pos + aphiv_neg*rho_neg);
 175
 176         surfaceVectorField phiUp
 177         (
 178             (aphiv_pos*rhoU_pos + aphiv_neg*rhoU_neg)
 179           + (a_pos*p_pos + a_neg*p_neg)*mesh.Sf()
 180         );
 181
 182         surfaceScalarField phiEp
 183         (
 184             aphiv_pos*(rho_pos*(e_pos + 0.5*magSqr(U_pos)) + p_pos)
 185           + aphiv_neg*(rho_neg*(e_neg + 0.5*magSqr(U_neg)) + p_neg)
 186           + aSf*p_pos - aSf*p_neg
 187         );
 188
 189         volScalarField muEff(turbulence->muEff());
 190         volTensorField tauMC("tauMC", muEff*dev2(Foam::T(fvc::grad(U))));
 191
 192         // --- Solve density
 193         solve(fvm::ddt(rho) + fvc::div(phi));
 194
 195         // --- Solve momentum
 196         solve(fvm::ddt(rhoU) + fvc::div(phiUp));
 197
 198         U.dimensionedInternalField() =
 199             rhoU.dimensionedInternalField()
 200            /rho.dimensionedInternalField();
 201         U.correctBoundaryConditions();
 202         rhoU.boundaryField() = rho.boundaryField()*U.boundaryField();
 203
 204         if (!inviscid)
 205         {
 206             solve
 207             (
 208                 fvm::ddt(rho, U) - fvc::ddt(rho, U)
 209               - fvm::laplacian(muEff, U)
 210               - fvc::div(tauMC)
 211             );
 212             rhoU = rho*U;
 213         }
 214
 215         // --- Solve energy
 216         surfaceScalarField sigmaDotU
 217         (
 218             (
 219                 fvc::interpolate(muEff)*mesh.magSf()*fvc::snGrad(U)
 220               + (mesh.Sf() & fvc::interpolate(tauMC))
 221             )
 222             & (a_pos*U_pos + a_neg*U_neg)
 223         );
 224
 225         solve
 226         (
 227             fvm::ddt(rhoE)
 228           + fvc::div(phiEp)
 229           - fvc::div(sigmaDotU)
 230         );
 231
 232         e = rhoE/rho - 0.5*magSqr(U);
 233         e.correctBoundaryConditions();
 234         thermo.correct();
 235         rhoE.boundaryField() =
 236             rho.boundaryField()*
 237             (
 238                 e.boundaryField() + 0.5*magSqr(U.boundaryField())
 239             );
 240
 241         if (!inviscid)
 242         {
 243             volScalarField k("k", thermo.Cp()*muEff/Pr);
 244             solve
 245             (
 246                 fvm::ddt(rho, e) - fvc::ddt(rho, e)
 247               - fvm::laplacian(turbulence->alphaEff(), e)
 248               + fvc::laplacian(turbulence->alpha(), e)
 249               - fvc::laplacian(k, T)
 250             );
 251             thermo.correct();
 252             rhoE = rho*(e + 0.5*magSqr(U));
 253         }
 254
 255         p.dimensionedInternalField() =
 256             rho.dimensionedInternalField()
 257            /psi.dimensionedInternalField();
 258         p.correctBoundaryConditions();
 259         rho.boundaryField() = psi.boundaryField()*p.boundaryField();
 260
 261         turbulence->correct();
 262
 263         runTime.write();
 264
 265         Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
 266             << "  ClockTime = " << runTime.elapsedClockTime() << " s"
 267             << nl << endl;
 268     }
 269
 270     Info<< "End\n" << endl;
 271
 272     return 0;
 273 }
 274
 275 // ************************************************************************* //