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Analytical.C

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00001 /*---------------------------------------------------------------------------*\
00002   =========                 |
00003   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
00004    \\    /   O peration     |
00005     \\  /    A nd           | Copyright (C) 1991-2010 OpenCFD Ltd.
00006      \\/     M anipulation  |
00007 -------------------------------------------------------------------------------
00008 License
00009     This file is part of OpenFOAM.
00010 
00011     OpenFOAM is free software: you can redistribute it and/or modify it
00012     under the terms of the GNU General Public License as published by
00013     the Free Software Foundation, either version 3 of the License, or
00014     (at your option) any later version.
00015 
00016     OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
00017     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
00018     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
00019     for more details.
00020 
00021     You should have received a copy of the GNU General Public License
00022     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
00023 
00024 \*---------------------------------------------------------------------------*/
00025 
00026 #include "Analytical.H"
00027 #include <OpenFOAM/addToRunTimeSelectionTable.H>
00028 
00029 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
00030 
00031 template<class Type>
00032 Foam::Analytical<Type>::Analytical
00033 (
00034     const word& phiName,
00035     const dictionary& dict
00036 )
00037 :
00038     IntegrationScheme<Type>(phiName, dict)
00039 {}
00040 
00041 
00042 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
00043 
00044 template<class Type>
00045 Foam::Analytical<Type>::~Analytical()
00046 {}
00047 
00048 
00049 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
00050 
00051 template<class Type>
00052 typename Foam::IntegrationScheme<Type>::integrationResult
00053 Foam::Analytical<Type>::integrate
00054 (
00055     const Type phi,
00056     const scalar dt,
00057     const Type alpha,
00058     const scalar beta
00059 ) const
00060 {
00061     typename IntegrationScheme<Type>::integrationResult retValue;
00062     retValue.average() = alpha + (phi - alpha)*(1 - exp(-beta*dt))/(beta*dt);
00063     retValue.value() =  alpha + (phi - alpha)*exp(-beta*dt);
00064 
00065     return retValue;
00066 }
00067 
00068 
00069 // ************************ vim: set sw=4 sts=4 et: ************************ //
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