dead8ec098
At the specie level:
hs = sensible enthalpy
ha = absolute (what was total) enthalpy
es = sensibly internal energy
ea = absolute (what was total) internal energy
At top-level
Rename total enthalpy h -> ha
Rename sensible enthalpy hs -> h
Combined h, hs, e and es thermo packages into a single structure.
Thermo packages now provide "he" function which may return either enthalpy or
internal energy, sensible or absolute according to the run-time selected form
alphaEff now returns the effective diffusivity for the particular energy which
the thermodynamics package is selected to solve for.
144 lines
4.3 KiB
C
144 lines
4.3 KiB
C
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
|
\\ / O peration |
|
|
\\ / A nd | Copyright (C) 2011-2012 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
|
|
engineFoam
|
|
|
|
Description
|
|
Solver for internal combustion engines.
|
|
|
|
Combusting RANS code using the b-Xi two-equation model.
|
|
Xi may be obtained by either the solution of the Xi transport
|
|
equation or from an algebraic exression. Both approaches are
|
|
based on Gulder's flame speed correlation which has been shown
|
|
to be appropriate by comparison with the results from the
|
|
spectral model.
|
|
|
|
Strain effects are encorporated directly into the Xi equation
|
|
but not in the algebraic approximation. Further work need to be
|
|
done on this issue, particularly regarding the enhanced removal rate
|
|
caused by flame compression. Analysis using results of the spectral
|
|
model will be required.
|
|
|
|
For cases involving very lean Propane flames or other flames which are
|
|
very strain-sensitive, a transport equation for the laminar flame
|
|
speed is present. This equation is derived using heuristic arguments
|
|
involving the strain time scale and the strain-rate at extinction.
|
|
the transport velocity is the same as that for the Xi equation.
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#include "fvCFD.H"
|
|
#include "engineTime.H"
|
|
#include "engineMesh.H"
|
|
#include "psiuReactionThermo.H"
|
|
#include "turbulenceModel.H"
|
|
#include "laminarFlameSpeed.H"
|
|
#include "ignition.H"
|
|
#include "Switch.H"
|
|
#include "OFstream.H"
|
|
#include "mathematicalConstants.H"
|
|
#include "pimpleControl.H"
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
#include "setRootCase.H"
|
|
|
|
#include "createEngineTime.H"
|
|
#include "createEngineMesh.H"
|
|
#include "readCombustionProperties.H"
|
|
#include "createFields.H"
|
|
#include "initContinuityErrs.H"
|
|
#include "readEngineTimeControls.H"
|
|
#include "compressibleCourantNo.H"
|
|
#include "setInitialDeltaT.H"
|
|
#include "startSummary.H"
|
|
|
|
pimpleControl pimple(mesh);
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
Info<< "\nStarting time loop\n" << endl;
|
|
|
|
while (runTime.run())
|
|
{
|
|
#include "readEngineTimeControls.H"
|
|
#include "compressibleCourantNo.H"
|
|
#include "setDeltaT.H"
|
|
|
|
runTime++;
|
|
|
|
Info<< "Crank angle = " << runTime.theta() << " CA-deg" << endl;
|
|
|
|
mesh.move();
|
|
|
|
#include "rhoEqn.H"
|
|
|
|
// --- Pressure-velocity PIMPLE corrector loop
|
|
while (pimple.loop())
|
|
{
|
|
#include "UEqn.H"
|
|
|
|
#include "ftEqn.H"
|
|
#include "bEqn.H"
|
|
#include "hauEqn.H"
|
|
#include "haEqn.H"
|
|
|
|
if (!ign.ignited())
|
|
{
|
|
hau == ha;
|
|
}
|
|
|
|
// --- Pressure corrector loop
|
|
while (pimple.correct())
|
|
{
|
|
#include "pEqn.H"
|
|
}
|
|
|
|
if (pimple.turbCorr())
|
|
{
|
|
turbulence->correct();
|
|
}
|
|
}
|
|
|
|
#include "logSummary.H"
|
|
|
|
rho = thermo.rho();
|
|
|
|
runTime.write();
|
|
|
|
Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
|
|
<< " ClockTime = " << runTime.elapsedClockTime() << " s"
|
|
<< nl << endl;
|
|
}
|
|
|
|
Info<< "End\n" << endl;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|