207 lines
5.5 KiB
C++
207 lines
5.5 KiB
C++
/*---------------------------------------------------------------------------*\
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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) 2011-2016 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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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, see <http://www.gnu.org/licenses/>.
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Class
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Foam::functionObjects::forceCoeffs
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Group
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grpForcesFunctionObjects
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Description
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This function object extends the Foam::forces function object by providing
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lift, drag and moment coefficients. The data can optionally be output into
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bins, defined in a given direction.
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Example of function object specification:
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\verbatim
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forceCoeffs1
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{
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type forceCoeffs;
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functionObjectLibs ("libforces.so");
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...
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log yes;
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patches (walls);
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liftDir (0 1 0);
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dragDir (-1 0 0);
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pitchAxis (0 0 1);
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magUInf 100;
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lRef 3.5;
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Aref 2.2;
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binData
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{
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nBin 20;
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direction (1 0 0);
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cumulative yes;
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}
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}
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\endverbatim
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\heading Function object usage
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\table
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Property | Description | Required | Default value
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type | type name: forces | yes |
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log | write force data to standard output | no | no
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patches | patches included in the forces calculation | yes |
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liftDir | lift direction | yes |
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dragDir | drag direction | yes |
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pitchAxis | picth axis | yes |
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magUInf | free stream velocity magnitude | yes |
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lRef | reference length scale for moment calculations | yes |
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Aref | reference area | yes |
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\endtable
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Bin data is optional, but if the dictionary is present, the entries must
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be defined according o
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\table
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nBin | number of data bins | yes |
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direction | direction along which bins are defined | yes |
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cumulative | bin data accumulated with incresing distance | yes |
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\endtable
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SeeAlso
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Foam::functionObject
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Foam::OutputFilterFunctionObject
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Foam::forces
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SourceFiles
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forceCoeffs.C
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\*---------------------------------------------------------------------------*/
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#ifndef functionObjects_forceCoeffs_H
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#define functionObjects_forceCoeffs_H
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#include "forces.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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namespace functionObjects
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{
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/*---------------------------------------------------------------------------*\
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Class forceCoeffs Declaration
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\*---------------------------------------------------------------------------*/
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class forceCoeffs
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:
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public forces
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{
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// Private data
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// Force coefficient geometry
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//- Lift
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vector liftDir_;
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//- Drag
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vector dragDir_;
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//- Pitch
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vector pitchAxis_;
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// Free-stream conditions
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//- Velocity magnitude
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scalar magUInf_;
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// Reference scales
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//- Length
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scalar lRef_;
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//- Area
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scalar Aref_;
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// Private Member Functions
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//- Disallow default bitwise copy construct
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forceCoeffs(const forceCoeffs&);
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//- Disallow default bitwise assignment
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void operator=(const forceCoeffs&);
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protected:
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//- Output file header information
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virtual void writeFileHeader(const label i);
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public:
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//- Runtime type information
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TypeName("forceCoeffs");
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// Constructors
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//- Construct for given objectRegistry and dictionary.
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// Allow the possibility to load fields from files
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forceCoeffs
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(
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const word& name,
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const objectRegistry&,
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const dictionary&,
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const bool loadFromFiles = false
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);
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//- Destructor
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virtual ~forceCoeffs();
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// Member Functions
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//- Read the forces data
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virtual void read(const dictionary&);
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//- Execute, currently does nothing
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virtual void execute();
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//- Execute at the final time-loop, currently does nothing
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virtual void end();
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//- Called when time was set at the end of the Time::operator++
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virtual void timeSet();
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//- Write the forces
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virtual void write();
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace functionObjects
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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