ENH: laminarFlameSpeed: added RaviPetersen flame speed for Hydrogen
This commit is contained in:
william
parent
89100a1d25
commit
0bcdf88e30
@ -3,5 +3,6 @@ laminarFlameSpeed/laminarFlameSpeedNew.C
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constant/constant.C
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Gulders/Gulders.C
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GuldersEGR/GuldersEGR.C
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RaviPetersen/RaviPetersen.C
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LIB = $(FOAM_LIBBIN)/liblaminarFlameSpeedModels
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@ -0,0 +1,365 @@
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2013 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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||||
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
for more details.
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||||
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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\*---------------------------------------------------------------------------*/
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#include "RaviPetersen.H"
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#include "addToRunTimeSelectionTable.H"
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// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace laminarFlameSpeedModels
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{
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defineTypeNameAndDebug(RaviPetersen, 0);
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addToRunTimeSelectionTable
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(
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laminarFlameSpeed,
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RaviPetersen,
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dictionary
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);
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}
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}
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// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
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Foam::laminarFlameSpeedModels::RaviPetersen::RaviPetersen
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(
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const dictionary& dict,
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const psiuReactionThermo& ct
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)
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:
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laminarFlameSpeed(dict, ct),
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coeffsDict_(dict.subDict(typeName + "Coeffs").subDict(fuel_)),
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pPoints_(coeffsDict_.lookup("pPoints")),
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EqRPoints_(coeffsDict_.lookup("EqRPoints")),
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alpha_(coeffsDict_.lookup("alpha")),
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beta_(coeffsDict_.lookup("beta")),
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TRef_(readScalar(coeffsDict_.lookup("TRef")))
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{
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checkPointsMonotonicity("equivalenceRatio", EqRPoints_);
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checkPointsMonotonicity("pressure", pPoints_);
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checkCoefficientArrayShape("alpha", alpha_);
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checkCoefficientArrayShape("beta", beta_);
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}
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// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
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Foam::laminarFlameSpeedModels::RaviPetersen::~RaviPetersen()
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{}
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// * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
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void Foam::laminarFlameSpeedModels::RaviPetersen::checkPointsMonotonicity
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(
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const word& name,
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const List<scalar>& x
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) const
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{
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for (label i = 1; i < x.size(); i ++)
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{
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if (x[i] <= x[i-1])
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{
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FatalIOErrorIn
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(
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"laminarFlameSpeedModels::RaviPetersen::checkPointsMonotonicity"
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"("
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"const word&, "
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"const List<scalar>&"
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") const",
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coeffsDict_
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) << "Data points for the " << name
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<< " do not increase monotonically" << endl
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<< exit(FatalIOError);
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}
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}
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}
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void Foam::laminarFlameSpeedModels::RaviPetersen::checkCoefficientArrayShape
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(
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const word& name,
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const List<List<List<scalar> > >& x
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) const
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{
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bool ok = true;
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ok &= x.size() == EqRPoints_.size() - 1;
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forAll(x, i)
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{
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ok &= x[i].size() == pPoints_.size();
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forAll(x[i], j)
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{
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ok &= x[i][j].size() == x[i][0].size();
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}
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}
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if (!ok)
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{
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FatalIOErrorIn
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(
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"laminarFlameSpeedModels::RaviPetersen::checkCoefficientArrayShape"
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"("
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"const word&, "
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"const List<List<List<scalar> > >&"
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") const",
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coeffsDict_
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) << "Inconsistent size of " << name << " coefficients array" << endl
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<< exit(FatalIOError);
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}
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}
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inline bool Foam::laminarFlameSpeedModels::RaviPetersen::interval
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(
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const List<scalar>& xPoints,
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const scalar x,
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label& xIndex,
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scalar& xXi,
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scalar& xLim
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) const
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{
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if (x < xPoints.first())
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{
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xIndex = 0;
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xXi = 0.0;
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xLim = xPoints.first();
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return false;
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}
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else if (x > xPoints.last())
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{
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xIndex = xPoints.size() - 2;
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xXi = 1.0;
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xLim = xPoints.last();
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return false;
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}
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for (xIndex = 0; x > xPoints[xIndex+1]; xIndex ++)
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{
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// increment xIndex until xPoints[xIndex] < x < xPoints[xIndex+1]
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}
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xXi = (x - xPoints[xIndex])/(xPoints[xIndex+1] - xPoints[xIndex]);
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xLim = x;
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return true;
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}
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inline Foam::scalar Foam::laminarFlameSpeedModels::RaviPetersen::polynomial
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(
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const List<scalar>& coeffs,
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const scalar x
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) const
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{
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scalar xPow = 1.0;
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scalar y = 0.0;
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forAll(coeffs, i)
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{
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y += coeffs[i]*xPow;
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xPow *= x;
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}
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return y;
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}
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inline Foam::scalar Foam::laminarFlameSpeedModels::RaviPetersen::dPolynomial
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(
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const List<scalar>& coeffs,
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const scalar x
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) const
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{
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scalar xPow = 1.0;
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scalar y = 0.0;
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for (label i = 1; i < coeffs.size(); i++)
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{
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y += i*coeffs[i]*xPow;
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xPow *= x;
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}
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return y;
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}
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inline Foam::scalar Foam::laminarFlameSpeedModels::RaviPetersen::THatPowB
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(
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const label EqRIndex,
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const label pIndex,
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const scalar EqR,
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const scalar Tu
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) const
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{
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return pow
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(
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Tu/TRef_,
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polynomial(beta_[EqRIndex][pIndex],EqR)
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);
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}
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inline Foam::scalar
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Foam::laminarFlameSpeedModels::RaviPetersen::correlationInRange
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(
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const label EqRIndex,
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const label pIndex,
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const scalar EqR,
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const scalar Tu
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) const
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{
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// standard correlation
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return
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polynomial(alpha_[EqRIndex][pIndex],EqR)
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*THatPowB(EqRIndex, pIndex, EqR, Tu);
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}
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inline Foam::scalar
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Foam::laminarFlameSpeedModels::RaviPetersen::correlationOutOfRange
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(
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const label EqRIndex,
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const label pIndex,
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const scalar EqR,
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const scalar EqRLim,
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const scalar Tu
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) const
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{
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scalar A = polynomial(alpha_[EqRIndex][pIndex], EqRLim);
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scalar dA = dPolynomial(alpha_[EqRIndex][pIndex], EqRLim);
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scalar dB = dPolynomial(beta_[EqRIndex][pIndex], EqRLim);
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scalar TB = THatPowB(EqRIndex, pIndex, EqRLim, Tu);
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// linear extrapolation from the bounds of the correlation
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return max(TB*(A + (dA + A*log(Tu/TRef_)*dB)*(EqR - EqRLim)), 0.0);
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}
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inline Foam::scalar Foam::laminarFlameSpeedModels::RaviPetersen::speed
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(
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const scalar EqR,
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const scalar p,
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const scalar Tu
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) const
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{
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scalar Su = 0, s;
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label EqRIndex, pIndex;
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scalar EqRXi, pXi;
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scalar EqRLim, pLim;
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bool EqRInRange;
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EqRInRange = interval(EqRPoints_, EqR, EqRIndex, EqRXi, EqRLim);
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interval(pPoints_, p, pIndex, pXi, pLim);
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for (label pI = 0; pI < 2; pI ++)
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{
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if (EqRInRange)
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{
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s = correlationInRange(EqRIndex, pIndex + pI, EqR, Tu);
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}
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else
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{
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s = correlationOutOfRange(EqRIndex, pIndex + pI, EqR, EqRLim, Tu);
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}
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Su += (1 - pXi)*s;
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pXi = 1 - pXi;
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}
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return Su;
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}
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// * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
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Foam::tmp<Foam::volScalarField>
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Foam::laminarFlameSpeedModels::RaviPetersen::operator()() const
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{
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const volScalarField& p = psiuReactionThermo_.p();
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const volScalarField& Tu = psiuReactionThermo_.Tu();
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volScalarField EqR
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(
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IOobject
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(
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"EqR",
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p.time().timeName(),
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p.db(),
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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p.mesh(),
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dimensionedScalar("EqR", dimless, 0.0)
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);
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if (psiuReactionThermo_.composition().contains("ft"))
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{
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const volScalarField& ft = psiuReactionThermo_.composition().Y("ft");
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EqR =
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dimensionedScalar
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(
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psiuReactionThermo_.lookup("stoichiometricAirFuelMassRatio")
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)*ft/max(1 - ft, SMALL);
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}
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else
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{
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EqR = equivalenceRatio_;
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}
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tmp<volScalarField> tSu0
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(
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new volScalarField
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(
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IOobject
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(
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"Su0",
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p.time().timeName(),
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p.db(),
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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p.mesh(),
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dimensionedScalar("Su0", dimVelocity, 0.0)
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)
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);
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volScalarField& Su0 = tSu0();
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forAll(Su0, cellI)
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{
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Su0[cellI] = speed(EqR[cellI], p[cellI], Tu[cellI]);
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}
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return tSu0;
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}
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// ************************************************************************* //
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@ -0,0 +1,203 @@
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/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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||||
\\ / A nd | Copyright (C) 2013 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
|
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|
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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/>.
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Class
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Foam::laminarFlameSpeedModels::RaviPetersen
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Description
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Laminar flame speed obtained from Ravi and Petersen's correlation.
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The correlation for the laminar flame speed \f$Su\f$ is of the following
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form:
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\f[
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Su = \left( \sum \alpha_i \phi^i \right)
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\left( \frac{T}{T_{ref}} \right)^{\left( \sum \beta_j \phi^j \right)}
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\f]
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Where \f$\phi\f$ is the equivalence ratio, and \f$\alpha\f$ and \f$\beta\f$
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are polynomial coefficients given for a number of pressure and equivalence
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ratio points.
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SourceFiles
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RaviPetersen.C
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\*---------------------------------------------------------------------------*/
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#ifndef RaviPetersen_H
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#define RaviPetersen_H
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#include "laminarFlameSpeed.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace laminarFlameSpeedModels
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{
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/*---------------------------------------------------------------------------*\
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Class RaviPetersen Declaration
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\*---------------------------------------------------------------------------*/
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class RaviPetersen
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:
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public laminarFlameSpeed
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{
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// Private Data
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dictionary coeffsDict_;
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//- Correlation pressure values
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List<scalar> pPoints_;
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//- Correlation equivalence ratios
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List<scalar> EqRPoints_;
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//- Correlation alpha coefficients
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List<List<List<scalar> > > alpha_;
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//- Correlation beta coefficients
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List<List<List<scalar> > > beta_;
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//- Reference temperature
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scalar TRef_;
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// Private Member Functions
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//- Check that input points are ordered
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void checkPointsMonotonicity
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(
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const word& name,
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const List<scalar>& x
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) const;
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//- Check that the coefficient arrays are of the correct shape
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void checkCoefficientArrayShape
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(
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const word& name,
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const List<List<List<scalar> > >& x
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) const;
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//- Find and interpolate a value in the data point arrays
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inline bool interval
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(
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const List<scalar>& xPoints,
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const scalar x,
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label& xIndex,
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scalar& xXi,
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scalar& xLim
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) const;
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//- Evaluate a polynomial
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inline scalar polynomial
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(
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const List<scalar>& coeffs,
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const scalar x
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) const;
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//- Evaluate a polynomial differential
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inline scalar dPolynomial
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(
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const List<scalar>& coeffs,
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const scalar x
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) const;
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//- Calculate normalised temperature to the power of the B polynomial
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inline scalar THatPowB
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(
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const label EqRIndex,
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const label pIndex,
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const scalar EqR,
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const scalar Tu
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) const;
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//- Return the flame speed within the correlation range
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inline scalar correlationInRange
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(
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const label EqRIndex,
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const label pIndex,
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const scalar EqR,
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const scalar Tu
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) const;
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//- Extrapolate the flame speed correlation outside its range
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inline scalar correlationOutOfRange
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(
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const label EqRIndex,
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const label pIndex,
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const scalar EqR,
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const scalar EqRLim,
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const scalar Tu
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) const;
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//- Return the laminar flame speed [m/s]
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inline scalar speed
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(
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const scalar EqR,
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const scalar p,
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const scalar Tu
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) const;
|
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//- Construct as copy (not implemented)
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RaviPetersen(const RaviPetersen&);
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void operator=(const RaviPetersen&);
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public:
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//- Runtime type information
|
||||
TypeName("RaviPetersen");
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||||
// Constructors
|
||||
|
||||
//- Construct from dictionary and psiuReactionThermo
|
||||
RaviPetersen
|
||||
(
|
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const dictionary&,
|
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const psiuReactionThermo&
|
||||
);
|
||||
|
||||
|
||||
//- Destructor
|
||||
virtual ~RaviPetersen();
|
||||
|
||||
|
||||
// Member functions
|
||||
|
||||
//- Return the laminar flame speed [m/s]
|
||||
tmp<volScalarField> operator()() const;
|
||||
};
|
||||
|
||||
|
||||
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
||||
|
||||
} // End laminarFlameSpeedModels
|
||||
} // End namespace Foam
|
||||
|
||||
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
||||
|
||||
#endif
|
||||
|
||||
// ************************************************************************* //
|
||||
@ -5,7 +5,7 @@ cd ${0%/*} || exit 1 # run from this directory
|
||||
. $WM_PROJECT_DIR/bin/tools/CleanFunctions
|
||||
|
||||
keepCases="moriyoshiHomogeneous"
|
||||
loseCases="moriyoshiHomogeneousPart2"
|
||||
loseCases="moriyoshiHomogeneousPart2 moriyoshiHomogeneousHydrogen"
|
||||
|
||||
for caseName in $keepCases
|
||||
do
|
||||
|
||||
@ -6,21 +6,25 @@ cd ${0%/*} || exit 1 # run from this directory
|
||||
|
||||
setControlDict()
|
||||
{
|
||||
controlDict="system/controlDict"
|
||||
|
||||
sed \
|
||||
-e s/"\(deltaT[ \t]*\) 5e-06;"/"\1 1e-05;"/g \
|
||||
-e s/"\(endTime[ \t]*\) 0.005;"/"\1 0.015;"/g \
|
||||
-e s/"\(writeInterval[ \t]*\) 10;"/"\1 50;"/g \
|
||||
$controlDict > temp.$$
|
||||
mv temp.$$ $controlDict
|
||||
-e "s/\(deltaT[ \t]*\) 5e-06;/\1 1e-05;/g" \
|
||||
-e "s/\(endTime[ \t]*\) 0.005;/\1 0.015;/g" \
|
||||
-e "s/\(writeInterval[ \t]*\) 10;/\1 50;/g" \
|
||||
-i system/controlDict
|
||||
}
|
||||
|
||||
setCombustionProperties()
|
||||
{
|
||||
sed \
|
||||
-e "s/\(laminarFlameSpeedCorrelation[ \t]*\) Gulders;/\1 RaviPetersen;/g" \
|
||||
-e "s/\(fuel[ \t]*\) Propane;/\1 HydrogenInAir;/g" \
|
||||
-i constant/combustionProperties
|
||||
}
|
||||
|
||||
# Do moriyoshiHomogeneous
|
||||
( cd moriyoshiHomogeneous && foamRunTutorials )
|
||||
|
||||
# Clone case
|
||||
# Clone case for second phase
|
||||
cloneCase moriyoshiHomogeneous moriyoshiHomogeneousPart2
|
||||
|
||||
# Modify and execute
|
||||
@ -32,4 +36,19 @@ cloneCase moriyoshiHomogeneous moriyoshiHomogeneousPart2
|
||||
runApplication `getApplication`
|
||||
)
|
||||
|
||||
# Clone case for hydrogen
|
||||
cloneCase moriyoshiHomogeneous moriyoshiHomogeneousHydrogen
|
||||
|
||||
# Modify and execute
|
||||
(
|
||||
cd moriyoshiHomogeneousHydrogen || exit
|
||||
|
||||
setCombustionProperties
|
||||
mv constant/thermophysicalProperties \
|
||||
constant/thermophysicalProperties.propane
|
||||
mv constant/thermophysicalProperties.hydrogen \
|
||||
constant/thermophysicalProperties
|
||||
runApplication `getApplication`
|
||||
)
|
||||
|
||||
# ----------------------------------------------------------------- end-of-file
|
||||
|
||||
@ -68,6 +68,36 @@ GuldersCoeffs
|
||||
}
|
||||
}
|
||||
|
||||
RaviPetersenCoeffs
|
||||
{
|
||||
HydrogenInAir
|
||||
{
|
||||
TRef 320;
|
||||
pPoints ( 1.0e05 5.0e05 1.0e06 2.0e06 3.0e06 );
|
||||
EqRPoints ( 0.5 2.0 5.0 );
|
||||
alpha ( ( (-0.03 -2.347 9.984 -6.734 1.361)
|
||||
( 1.61 -9.708 19.026 -11.117 2.098)
|
||||
( 2.329 -12.287 21.317 -11.973 2.207)
|
||||
( 2.593 -12.813 20.815 -11.471 2.095)
|
||||
( 2.728 -13.164 20.794 -11.418 2.086) )
|
||||
( ( 3.558 0.162 -0.247 0.0253 0 )
|
||||
( 4.818 -0.872 -0.053 0.0138 0 )
|
||||
( 3.789 -0.312 -0.208 0.028 0 )
|
||||
( 4.925 -1.841 0.211 -0.0059 0 )
|
||||
( 4.505 -1.906 0.259 -0.0105 0 ) ) );
|
||||
beta ( ( ( 5.07 -6.42 3.87 -0.767)
|
||||
( 5.52 -6.73 3.88 -0.728)
|
||||
( 5.76 -6.92 3.92 -0.715)
|
||||
( 6.02 -7.44 4.37 -0.825)
|
||||
( 7.84 -11.55 7.14 -1.399) )
|
||||
( ( 1.405 0.053 0.022 0 )
|
||||
( 1.091 0.317 0 0 )
|
||||
( 1.64 -0.03 0.07 0 )
|
||||
( 0.84 0.56 0 0 )
|
||||
( 0.81 0.64 0 0 ) ) );
|
||||
}
|
||||
}
|
||||
|
||||
ignite yes;
|
||||
|
||||
ignitionSites
|
||||
|
||||
@ -0,0 +1,76 @@
|
||||
/*--------------------------------*- C++ -*----------------------------------*\
|
||||
| ========= | |
|
||||
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
|
||||
| \\ / O peration | Version: dev |
|
||||
| \\ / A nd | Web: www.OpenFOAM.org |
|
||||
| \\/ M anipulation | |
|
||||
\*---------------------------------------------------------------------------*/
|
||||
FoamFile
|
||||
{
|
||||
version 2.0;
|
||||
format ascii;
|
||||
class dictionary;
|
||||
location "constant";
|
||||
object thermophysicalProperties;
|
||||
}
|
||||
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
||||
|
||||
thermoType
|
||||
{
|
||||
type heheuPsiThermo;
|
||||
mixture homogeneousMixture;
|
||||
transport sutherland;
|
||||
thermo janaf;
|
||||
equationOfState perfectGas;
|
||||
specie specie;
|
||||
energy absoluteEnthalpy;
|
||||
}
|
||||
|
||||
stoichiometricAirFuelMassRatio stoichiometricAirFuelMassRatio [ 0 0 0 0 0 0 0 ] 34.074;
|
||||
|
||||
reactants
|
||||
{
|
||||
specie
|
||||
{
|
||||
nMoles 24.8095;
|
||||
molWeight 16.0243;
|
||||
}
|
||||
thermodynamics
|
||||
{
|
||||
Tlow 200;
|
||||
Thigh 5000;
|
||||
Tcommon 1000;
|
||||
highCpCoeffs ( 3.02082 0.00104314 -2.88613e-07 4.20369e-11 -2.37182e-15 -902.964 2.3064 );
|
||||
lowCpCoeffs ( 2.99138 0.00343493 -8.43792e-06 9.57755e-09 -3.75097e-12 -987.16 1.95123 );
|
||||
}
|
||||
transport
|
||||
{
|
||||
As 1.67212e-06;
|
||||
Ts 170.672;
|
||||
}
|
||||
}
|
||||
|
||||
products
|
||||
{
|
||||
specie
|
||||
{
|
||||
nMoles 1;
|
||||
molWeight 17.9973;
|
||||
}
|
||||
thermodynamics
|
||||
{
|
||||
Tlow 200;
|
||||
Thigh 5000;
|
||||
Tcommon 1000;
|
||||
highCpCoeffs ( 2.879 0.00161934 -4.61257e-07 6.41382e-11 -3.3855e-15 -8023.54 4.11691 );
|
||||
lowCpCoeffs ( 3.3506 0.00176018 -4.28718e-06 5.63372e-09 -2.35948e-12 -8211.42 1.36387 );
|
||||
}
|
||||
transport
|
||||
{
|
||||
As 1.67212e-06;
|
||||
Ts 170.672;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// ************************************************************************* //
|
||||
Loading…
Reference in New Issue
Block a user