rhoPimplecFoam: New compressible solver featuring PIMPLEC

applications/solvers/compressible/rhoPimpleFoam/rhoPimplecFoam/Make/files

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+rhoPimplecFoam.C
+
+EXE = $(FOAM_APPBIN)/rhoPimplecFoam

applications/solvers/compressible/rhoPimpleFoam/rhoPimplecFoam/Make/options

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+EXE_INC = \
+    -I.. \
+    -I$(LIB_SRC)/thermophysicalModels/basic/lnInclude \
+    -I$(LIB_SRC)/turbulenceModels/compressible/turbulenceModel \
+    -I$(LIB_SRC)/finiteVolume/cfdTools \
+    -I$(LIB_SRC)/finiteVolume/lnInclude
+
+EXE_LIBS = \
+    -lbasicThermophysicalModels \
+    -lspecie \
+    -lcompressibleTurbulenceModel \
+    -lcompressibleRASModels \
+    -lcompressibleLESModels \
+    -lfiniteVolume \
+    -lmeshTools

applications/solvers/compressible/rhoPimpleFoam/rhoPimplecFoam/pEqn.H

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+rho = thermo.rho();
+rho = max(rho, rhoMin);
+rho = min(rho, rhoMax);
+rho.relax();
+
+volScalarField rAU(1.0/UEqn().A());
+volScalarField rAtU(1.0/(1.0/rAU - UEqn().H1()));
+
+volVectorField HbyA("HbyA", U);
+HbyA = rAU*UEqn().H();
+
+if (pimple.nCorrPIMPLE() <= 1)
+{
+    UEqn.clear();
+}
+
+if (pimple.transonic())
+{
+    surfaceScalarField phid
+    (
+        "phid",
+        fvc::interpolate(psi)
+       *(
+            (fvc::interpolate(HbyA) & mesh.Sf())
+          + fvc::ddtPhiCorr(rAU, rho, U, phi)
+        )
+    );
+
+    surfaceScalarField phic
+    (
+        "phic",
+        fvc::interpolate(rho*(rAtU - rAU))*fvc::snGrad(p)*mesh.magSf()
+    );
+
+    HbyA -= (rAU - rAtU)*fvc::grad(p);
+
+    volScalarField Dp("Dp", rho*rAtU);
+
+    while (pimple.correctNonOrthogonal())
+    {
+        fvScalarMatrix pEqn
+        (
+            fvm::ddt(psi, p)
+          + fvm::div(phid, p)
+          + fvc::div(phic)
+          - fvm::laplacian(Dp, p)
+        );
+
+        // Relax the pressure equation to maintain diagonal dominance
+        pEqn.relax();
+
+        pEqn.solve();
+
+        if (pimple.finalNonOrthogonalIter())
+        {
+            phi == phic + pEqn.flux();
+        }
+    }
+}
+else
+{
+    surfaceScalarField phiHbyA
+    (
+        "phiHbyA",
+        fvc::interpolate(rho)
+       *(
+            (fvc::interpolate(HbyA) & mesh.Sf())
+          + fvc::ddtPhiCorr(rAU, rho, U, phi)
+        )
+    );
+
+    phiHbyA += fvc::interpolate(rho*(rAtU - rAU))*fvc::snGrad(p)*mesh.magSf();
+    HbyA -= (rAU - rAtU)*fvc::grad(p);
+
+    volScalarField Dp("Dp", rho*rAtU);
+
+    while (pimple.correctNonOrthogonal())
+    {
+        fvScalarMatrix pEqn
+        (
+            fvm::ddt(psi, p)
+          + fvc::div(phiHbyA)
+          - fvm::laplacian(Dp, p)
+        );
+
+        pEqn.solve();
+
+        if (pimple.finalNonOrthogonalIter())
+        {
+            phi = phiHbyA + pEqn.flux();
+        }
+    }
+}
+
+#include "rhoEqn.H"
+#include "compressibleContinuityErrs.H"
+
+// Explicitly relax pressure for momentum corrector
+p.relax();
+
+U = HbyA - rAtU*fvc::grad(p);
+U.correctBoundaryConditions();
+K = 0.5*magSqr(U);
+
+dpdt = fvc::ddt(p);
+
+// Recalculate density from the relaxed pressure
+rho = thermo.rho();
+rho = max(rho, rhoMin);
+rho = min(rho, rhoMax);
+
+if (!pimple.transonic())
+{
+    rho.relax();
+}
+
+Info<< "rho max/min : " << max(rho).value() << " " << min(rho).value() << endl;

applications/solvers/compressible/rhoPimpleFoam/rhoPimplecFoam/rhoPimplecFoam.C

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+/*---------------------------------------------------------------------------*\
+  =========                 |
+  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
+   \\    /   O peration     |
+    \\  /    A nd           | Copyright (C) 2012 OpenFOAM Foundation
+     \\/     M anipulation  |
+-------------------------------------------------------------------------------
+License
+    This file is part of OpenFOAM.
+
+    OpenFOAM is free software: you can redistribute it and/or modify it
+    under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
+    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+    for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
+
+Application
+    rhoPimplecFoam
+
+Description
+    Transient solver for laminar or turbulent flow of compressible fluids
+    for HVAC and similar applications.
+
+    Uses the flexible PIMPLEC (PISOC-SIMPLEC) solution for time-resolved and
+    pseudo-transient simulations.
+
+\*---------------------------------------------------------------------------*/
+
+#include "fvCFD.H"
+#include "basicPsiThermo.H"
+#include "turbulenceModel.H"
+#include "bound.H"
+#include "pimpleControl.H"
+
+// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+int main(int argc, char *argv[])
+{
+    #include "setRootCase.H"
+    #include "createTime.H"
+    #include "createMesh.H"
+
+    pimpleControl pimple(mesh);
+
+    #include "createFields.H"
+    #include "initContinuityErrs.H"
+
+    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
+
+    Info<< "\nStarting time loop\n" << endl;
+
+    while (runTime.run())
+    {
+        #include "readTimeControls.H"
+        #include "compressibleCourantNo.H"
+        #include "setDeltaT.H"
+
+        runTime++;
+
+        Info<< "Time = " << runTime.timeName() << nl << endl;
+
+        if (pimple.nCorrPIMPLE() <= 1)
+        {
+            #include "rhoEqn.H"
+        }
+
+        // --- Pressure-velocity PIMPLE corrector loop
+        while (pimple.loop())
+        {
+            #include "UEqn.H"
+            #include "hEqn.H"
+
+            // --- Pressure corrector loop
+            while (pimple.correct())
+            {
+                #include "pEqn.H"
+            }
+
+            if (pimple.turbCorr())
+            {
+                turbulence->correct();
+            }
+        }
+
+        runTime.write();
+
+        Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
+            << "  ClockTime = " << runTime.elapsedClockTime() << " s"
+            << nl << endl;
+    }
+
+    Info<< "End\n" << endl;
+
+    return 0;
+}
+
+
+// ************************************************************************* //