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thermophysicalTransportModels: Added nonUnityLewisEddyDiffusivity
This allows specification of a turbulent Schmidt number independent from
that of the turbulent Prandtl number. An example specification in
constant/thermophysicalTransport is as follows:
RAS
{
model nonUnityLewisEddyDiffusivity;
Prt 0.85;
Sct 0.7;
}
The defaulting of the turbulent Prandtl number (Prt) to 1 has also been
removed from the eddyDiffusivity model. Now the value must be set
explicitly. The only exception is if the
constant/thermophysicalTransport dictionary is omitted entirely, in
which case eddyDiffusivity with a turbulent Prandtl number of 1 is
selected as before.- Loading branch information
Will Bainbridge
committed
Apr 21, 2020
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188 changes: 188 additions & 0 deletions
188
...calTransportModels/turbulence/nonUnityLewisEddyDiffusivity/nonUnityLewisEddyDiffusivity.C
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,188 @@ | ||
| /*---------------------------------------------------------------------------*\ | ||
| ========= | | ||
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | ||
| \\ / O peration | Website: https://openfoam.org | ||
| \\ / A nd | Copyright (C) 2020 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/>. | ||
| \*---------------------------------------------------------------------------*/ | ||
|
|
||
| #include "nonUnityLewisEddyDiffusivity.H" | ||
| #include "fvcLaplacian.H" | ||
|
|
||
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | ||
|
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| namespace Foam | ||
| { | ||
| namespace turbulenceThermophysicalTransportModels | ||
| { | ||
|
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| // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * // | ||
|
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| template<class TurbulenceThermophysicalTransportModel> | ||
| nonUnityLewisEddyDiffusivity<TurbulenceThermophysicalTransportModel>:: | ||
| nonUnityLewisEddyDiffusivity | ||
| ( | ||
| const momentumTransportModel& momentumTransport, | ||
| const thermoModel& thermo | ||
| ) | ||
| : | ||
| eddyDiffusivity<TurbulenceThermophysicalTransportModel> | ||
| ( | ||
| typeName, | ||
| momentumTransport, | ||
| thermo, | ||
| false | ||
| ), | ||
|
|
||
| Sct_ | ||
| ( | ||
| dimensioned<scalar> | ||
| ( | ||
| "Sct", | ||
| dimless, | ||
| this->coeffDict_ | ||
| ) | ||
| ) | ||
| {} | ||
|
|
||
|
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| // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * // | ||
|
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| template<class TurbulenceThermophysicalTransportModel> | ||
| bool | ||
| nonUnityLewisEddyDiffusivity<TurbulenceThermophysicalTransportModel>::read() | ||
| { | ||
| if (eddyDiffusivity<TurbulenceThermophysicalTransportModel>::read()) | ||
| { | ||
| Sct_.readIfPresent(this->coeffDict()); | ||
|
|
||
| return true; | ||
| } | ||
| else | ||
| { | ||
| return false; | ||
| } | ||
| } | ||
|
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|
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| template<class TurbulenceThermophysicalTransportModel> | ||
| tmp<volVectorField> | ||
| nonUnityLewisEddyDiffusivity<TurbulenceThermophysicalTransportModel>::q() const | ||
| { | ||
| tmp<volVectorField> tmpq = | ||
| eddyDiffusivity<TurbulenceThermophysicalTransportModel>::q(); | ||
|
|
||
| if (mag(this->Prt_ - Sct_).value() > small) | ||
| { | ||
| const basicSpecieMixture& composition = this->thermo().composition(); | ||
|
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| const PtrList<volScalarField>& Y = composition.Y(); | ||
|
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| volScalarField alphaEffMinusDEff | ||
| ( | ||
| "alphaEffMinusDEff", | ||
| this->alphaEff()*(1 - this->Prt_/Sct_) | ||
| ); | ||
|
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||
| forAll(Y, i) | ||
| { | ||
| tmpq.ref() += | ||
| this->alpha() | ||
| *alphaEffMinusDEff | ||
| *composition.HE(i, this->thermo().p(), this->thermo().T()) | ||
| *fvc::grad(Y[i]); | ||
| } | ||
| } | ||
|
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| return tmpq; | ||
| } | ||
|
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|
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| template<class TurbulenceThermophysicalTransportModel> | ||
| tmp<fvScalarMatrix> | ||
| nonUnityLewisEddyDiffusivity<TurbulenceThermophysicalTransportModel>::divq | ||
| ( | ||
| volScalarField& he | ||
| ) const | ||
| { | ||
| tmp<fvScalarMatrix> tmpDivq = | ||
| eddyDiffusivity<TurbulenceThermophysicalTransportModel>::divq(he); | ||
|
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| if (mag(this->Prt_ - Sct_).value() > small) | ||
| { | ||
| const basicSpecieMixture& composition = this->thermo().composition(); | ||
|
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| const PtrList<volScalarField>& Y = composition.Y(); | ||
|
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| volScalarField alphaEffMinusDEff | ||
| ( | ||
| "alphaEffMinusDEff", | ||
| this->alphaEff()*(1 - this->Prt_/Sct_) | ||
| ); | ||
|
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| forAll(Y, i) | ||
| { | ||
| tmpDivq.ref() += | ||
| fvc::laplacian | ||
| ( | ||
| this->alpha() | ||
| *alphaEffMinusDEff | ||
| *composition.HE(i, this->thermo().p(), this->thermo().T()), | ||
| Y[i] | ||
| ); | ||
| } | ||
| } | ||
|
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| return tmpDivq; | ||
| } | ||
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| template<class TurbulenceThermophysicalTransportModel> | ||
| tmp<volVectorField> | ||
| nonUnityLewisEddyDiffusivity<TurbulenceThermophysicalTransportModel>::j | ||
| ( | ||
| const volScalarField& Yi | ||
| ) const | ||
| { | ||
| return | ||
| this->Prt_/Sct_ | ||
| *eddyDiffusivity<TurbulenceThermophysicalTransportModel>::j(Yi); | ||
| } | ||
|
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| template<class TurbulenceThermophysicalTransportModel> | ||
| tmp<fvScalarMatrix> | ||
| nonUnityLewisEddyDiffusivity<TurbulenceThermophysicalTransportModel>::divj | ||
| ( | ||
| volScalarField& Yi | ||
| ) const | ||
| { | ||
| return | ||
| this->Prt_/Sct_ | ||
| *eddyDiffusivity<TurbulenceThermophysicalTransportModel>::divj(Yi); | ||
| } | ||
|
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| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | ||
|
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| } // End namespace turbulenceThermophysicalTransportModels | ||
| } // End namespace Foam | ||
|
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| // ************************************************************************* // |
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