141 lines
3.9 KiB
C
141 lines
3.9 KiB
C
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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 held by original author
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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 the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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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
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for more details.
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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, write to the Free Software Foundation,
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Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Application
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Mach
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Description
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Calculates and optionally writes the local Mach number from the velocity
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field U at each time. The -nowrite option just outputs the max value
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without writing the field.
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\*---------------------------------------------------------------------------*/
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#include "calc.H"
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#include "basicThermo.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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void Foam::calc(const argList& args, const Time& runTime, const fvMesh& mesh)
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{
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bool writeResults = !args.options().found("noWrite");
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IOobject Uheader
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(
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"U",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ
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);
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IOobject Theader
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(
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"T",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ
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);
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// Check U and T exists
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if (Uheader.headerOk() && Theader.headerOk())
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{
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autoPtr<volScalarField> MachPtr;
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volVectorField U(Uheader, mesh);
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if (file(runTime.constantPath()/"thermophysicalProperties"))
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{
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// thermophysical Mach
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autoPtr<basicThermo> thermo
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(
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basicThermo::New(mesh)
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);
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volScalarField Cp = thermo->Cp();
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volScalarField Cv = thermo->Cv();
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MachPtr.set
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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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"Ma",
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runTime.timeName(),
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mesh
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),
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mag(U)/(sqrt((Cp/Cv)*(Cp - Cv)*thermo->T()))
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)
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);
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}
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else
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{
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// thermodynamic Mach
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IOdictionary thermoProps
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(
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IOobject
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(
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"thermodynamicProperties",
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runTime.constant(),
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mesh,
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IOobject::MUST_READ,
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IOobject::NO_WRITE
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)
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);
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dimensionedScalar R(thermoProps.lookup("R"));
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dimensionedScalar Cv(thermoProps.lookup("Cv"));
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volScalarField T(Theader, mesh);
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MachPtr.set
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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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"Ma",
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runTime.timeName(),
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mesh
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),
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mag(U)/(sqrt(((Cv + R)/Cv)*R*T))
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)
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);
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}
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Info<< "Mach max : " << max(MachPtr()).value() << endl;
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if (writeResults)
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{
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MachPtr().write();
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}
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}
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else
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{
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Info<< " Missing U or T" << endl;
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}
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}
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// ************************************************************************* //
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