mirror of
https://develop.openfoam.com/Development/openfoam.git
synced 2025-11-28 03:28:01 +00:00
270 lines
7.7 KiB
C++
270 lines
7.7 KiB
C++
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
|
\\ / O peration |
|
|
\\ / A nd | Copyright (C) 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::pressureTools
|
|
|
|
Group
|
|
grpUtilitiesFunctionObjects
|
|
|
|
Description
|
|
This function object includes tools to manipulate the pressure into
|
|
different forms. These currently include:
|
|
|
|
- static pressure
|
|
\f[
|
|
p_s = \rho p_k
|
|
\f]
|
|
- total pressure
|
|
\f[
|
|
p_T = p_{ref} + p_s + 0.5 \rho |U|^2
|
|
\f]
|
|
- static pressure coefficient
|
|
\f[
|
|
Cp_s = \frac{p_s - p_{\inf}}{0.5 \rho_{\inf} |U_{\inf}|^2}
|
|
\f]
|
|
- total pressure coefficient
|
|
\f[
|
|
Cp_T = \frac{p_T - p_{\inf}}{0.5 \rho_{\inf} |U_{\inf}|^2}
|
|
\f]
|
|
|
|
where
|
|
\vartable
|
|
\rho | density [kg/m3]
|
|
U | velocity [m/s]
|
|
\rho_{\inf} | freestream density [kg/m3]
|
|
p_{\inf} | freestream pressure [Pa]
|
|
U_{\inf} | freestream velocity [m/s]
|
|
p_k | kinematic pressure (p/rho)[m2/s2]
|
|
p_s | pressure [Pa]
|
|
p_T | total pressure [Pa]
|
|
p_{ref} | reference pressure level [Pa]
|
|
Cp_{s} | pressure coefficient
|
|
Cp_{T} | total pressure coefficient
|
|
\endvartable
|
|
|
|
The function object will operate on both kinematic (\f$ p_k \f$) and static
|
|
pressure (\f$ p_s \f$) fields, and the result is written as a
|
|
volScalarField.
|
|
|
|
The modes of operation are:
|
|
\table
|
|
Mode | calcTotal | calcCoeff
|
|
static pressure | no | no
|
|
total pressure | yes | no
|
|
pressure coefficient | no | yes
|
|
total pressure coefficient | yes | yes
|
|
\endtable
|
|
|
|
Example of function object specification to calculate pressure coefficient:
|
|
\verbatim
|
|
pressureTools1
|
|
{
|
|
type pressureTools;
|
|
functionObjectLibs ("libutilityFunctionObjects.so");
|
|
...
|
|
calcTotal no;
|
|
calcCoeff yes;
|
|
}
|
|
\endverbatim
|
|
|
|
\heading Function object usage
|
|
\table
|
|
Property | Description | Required | Default value
|
|
type | type name: pressureTools| yes |
|
|
rhoRef | Reference density for incompressible cases | no | 1
|
|
calcTotal | Calculate total coefficient | yes |
|
|
pRef | Reference pressure for total pressure | no | 0.0
|
|
calcCoeff | Calculate pressure coefficient | yes |
|
|
pInf | Freestream pressure for coefficient calculation | no |
|
|
UInf | Freestream velocity for coefficient calculation | no |
|
|
rhoInf | Freestream density for coefficient calculation | no |
|
|
\endtable
|
|
|
|
SourceFiles
|
|
pressureTools.C
|
|
IOpressureTools.H
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#ifndef pressureTools_H
|
|
#define pressureTools_H
|
|
|
|
#include "volFieldsFwd.H"
|
|
#include "pointFieldFwd.H"
|
|
#include "dimensionedScalar.H"
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
namespace Foam
|
|
{
|
|
|
|
// Forward declaration of classes
|
|
class objectRegistry;
|
|
class dictionary;
|
|
class mapPolyMesh;
|
|
|
|
/*---------------------------------------------------------------------------*\
|
|
Class pressureTools Declaration
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
class pressureTools
|
|
{
|
|
// Private data
|
|
|
|
//- Name of this set of pressureTools objects
|
|
word name_;
|
|
|
|
//- Reference to the database
|
|
const objectRegistry& obr_;
|
|
|
|
//- On/off switch
|
|
bool active_;
|
|
|
|
//- Name of pressure field, default is "p"
|
|
word pName_;
|
|
|
|
//- Name of velocity field, default is "U"
|
|
word UName_;
|
|
|
|
//- Name of density field, default is "rho"
|
|
word rhoName_;
|
|
|
|
//- Reference density employed for incompressible cases
|
|
scalar rhoRef_;
|
|
|
|
|
|
// Total pressure calculation
|
|
|
|
//- Flag to calculate total pressure
|
|
bool calcTotal_;
|
|
|
|
//- Reference pressure level
|
|
scalar pRef_;
|
|
|
|
|
|
// Pressure coefficient calculation
|
|
|
|
//- Flag to calculate pressure coefficient
|
|
bool calcCoeff_;
|
|
|
|
//- Freestream pressure
|
|
scalar pInf_;
|
|
|
|
//- Freestream velocity
|
|
vector UInf_;
|
|
|
|
//- Freestream density
|
|
scalar rhoInf_;
|
|
|
|
|
|
// Private Member Functions
|
|
|
|
//- Return the name of the derived pressure field
|
|
word pName() const;
|
|
|
|
//- Return the density scaling if supplied with kinematic pressure
|
|
dimensionedScalar rhoScale(const volScalarField& p) const;
|
|
|
|
//- Return the density field
|
|
tmp<volScalarField> rho(const volScalarField& p) const;
|
|
|
|
//- Return the reference pressure
|
|
dimensionedScalar pRef() const;
|
|
|
|
//- Calculate and return the dynamic pressure
|
|
tmp<volScalarField> pDyn(const volScalarField& p) const;
|
|
|
|
//- Convert to coeff by applying the freestream dynamic pressure scaling
|
|
tmp<volScalarField> convertToCoeff(const volScalarField& p) const;
|
|
|
|
//- Disallow default bitwise copy construct
|
|
pressureTools(const pressureTools&);
|
|
|
|
//- Disallow default bitwise assignment
|
|
void operator=(const pressureTools&);
|
|
|
|
|
|
public:
|
|
|
|
//- Runtime type information
|
|
TypeName("pressureTools");
|
|
|
|
|
|
// Constructors
|
|
|
|
//- Construct for given objectRegistry and dictionary.
|
|
// Allow the possibility to load fields from files
|
|
pressureTools
|
|
(
|
|
const word& name,
|
|
const objectRegistry&,
|
|
const dictionary&,
|
|
const bool loadFromFiles = false
|
|
);
|
|
|
|
|
|
//- Destructor
|
|
virtual ~pressureTools();
|
|
|
|
|
|
// Member Functions
|
|
|
|
//- Return name of the set of pressureTools
|
|
virtual const word& name() const
|
|
{
|
|
return name_;
|
|
}
|
|
|
|
//- Read the pressureTools data
|
|
virtual void read(const dictionary&);
|
|
|
|
//- Execute, currently does nothing
|
|
virtual void execute();
|
|
|
|
//- Execute at the final time-loop, currently does nothing
|
|
virtual void end();
|
|
|
|
//- Calculate the pressureTools and write
|
|
virtual void write();
|
|
|
|
//- Update for changes of mesh
|
|
virtual void updateMesh(const mapPolyMesh&)
|
|
{}
|
|
|
|
//- Update for changes of mesh
|
|
virtual void movePoints(const pointField&)
|
|
{}
|
|
};
|
|
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
} // End namespace Foam
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
#endif
|
|
|
|
// ************************************************************************* //
|