mirror of
https://develop.openfoam.com/Development/openfoam.git
synced 2025-12-28 03:37:59 +00:00
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.
146 lines
3.8 KiB
C++
146 lines
3.8 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/>.
|
|
|
|
Class
|
|
Foam::XiEqModels::basicSubGrid
|
|
|
|
Description
|
|
Basic sub-grid obstacle flame-wrinking enhancement factor model.
|
|
Details supplied by J Puttock 2/7/06.
|
|
|
|
<b> Sub-grid flame area generation </b>
|
|
|
|
\f$ n = N - \hat{\dwea{\vec{U}}}.n_{s}.\hat{\dwea{\vec{U}}} \f$
|
|
\f$ n_{r} = \sqrt{n} \f$
|
|
|
|
where:
|
|
|
|
\f$ \hat{\dwea{\vec{U}}} = \dwea{\vec{U}} / \vert \dwea{\vec{U}}
|
|
\vert \f$
|
|
|
|
\f$ b = \hat{\dwea{\vec{U}}}.B.\hat{\dwea{\vec{U}}} / n_{r} \f$
|
|
|
|
where:
|
|
|
|
\f$ B \f$ is the file "B".
|
|
|
|
\f$ N \f$ is the file "N".
|
|
|
|
\f$ n_{s} \f$ is the file "ns".
|
|
|
|
The flame area enhancement factor \f$ \Xi_{sub} \f$ is expected to
|
|
approach:
|
|
|
|
\f[
|
|
\Xi_{{sub}_{eq}} =
|
|
1 + max(2.2 \sqrt{b}, min(0.34 \frac{\vert \dwea{\vec{U}}
|
|
\vert}{{\vec{U}}^{'}}, 1.6)) \times min(\frac{n}{4}, 1)
|
|
\f]
|
|
|
|
|
|
SourceFiles
|
|
basicSubGrid.C
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#ifndef basicSubGrid_H
|
|
#define basicSubGrid_H
|
|
|
|
#include "XiEqModel.H"
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
namespace Foam
|
|
{
|
|
namespace XiEqModels
|
|
{
|
|
|
|
/*---------------------------------------------------------------------------*\
|
|
Class basicSubGrid Declaration
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
class basicSubGrid
|
|
:
|
|
public XiEqModel
|
|
{
|
|
// Private data
|
|
|
|
//- tblock
|
|
volSymmTensorField B_;
|
|
|
|
//- Equilibrium Xi model due to turbulence
|
|
autoPtr<XiEqModel> XiEqModel_;
|
|
|
|
|
|
// Private Member Functions
|
|
|
|
//- Disallow copy construct
|
|
basicSubGrid(const basicSubGrid&);
|
|
|
|
//- Disallow default bitwise assignment
|
|
void operator=(const basicSubGrid&);
|
|
|
|
|
|
public:
|
|
|
|
//- Runtime type information
|
|
TypeName("basicSubGrid");
|
|
|
|
|
|
// Constructors
|
|
|
|
//- Construct from components
|
|
basicSubGrid
|
|
(
|
|
const dictionary& XiEqProperties,
|
|
const psiuReactionThermo& thermo,
|
|
const compressible::RASModel& turbulence,
|
|
const volScalarField& Su
|
|
);
|
|
|
|
|
|
//- Destructor
|
|
virtual ~basicSubGrid();
|
|
|
|
|
|
// Member Functions
|
|
|
|
//- Return the flame-wrinking XiEq
|
|
virtual tmp<volScalarField> XiEq() const;
|
|
|
|
//- Update properties from given dictionary
|
|
virtual bool read(const dictionary& XiEqProperties);
|
|
};
|
|
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
} // End namespace XiEqModels
|
|
} // End namespace Foam
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
#endif
|
|
|
|
// ************************************************************************* //
|