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UOprocess.H

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00001 /*---------------------------------------------------------------------------*\
00002   =========                 |
00003   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
00004    \\    /   O peration     |
00005     \\  /    A nd           | Copyright (C) 1991-2005 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 the
00013     Free Software Foundation; either version 2 of the License, or (at your
00014     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, write to the Free Software Foundation,
00023     Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
00024 
00025 Class
00026     UOprocess
00027 
00028 Description
00029     Random UO process.
00030 
00031 SourceFiles
00032     UOprocess.C
00033 
00034 \*---------------------------------------------------------------------------*/
00035 
00036 #ifndef UOprocess_H
00037 #define UOprocess_H
00038 
00039 #include "complexFields.H"
00040 #include "scalar.H"
00041 #include "Random.H"
00042 
00043 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00044 
00045 namespace Foam
00046 {
00047 
00048 class Kmesh;
00049 class dictionary;
00050 
00051 /*---------------------------------------------------------------------------*\
00052                            Class UOprocess Declaration
00053 \*---------------------------------------------------------------------------*/
00054 
00055 class UOprocess
00056 {
00057     // Private data
00058 
00059         Random GaussGen;
00060 
00061         const Kmesh& Mesh;
00062         const scalar DeltaT, RootDeltaT;
00063         complexVectorField UOfield;
00064 
00065         scalar Alpha;
00066         scalar Sigma;
00067         scalar Kupper;
00068         scalar Klower;
00069         scalar Scale;
00070 
00071 
00072     // Private Member Functions
00073 
00074         complexVector WeinerProcess();
00075 
00076 
00077 public:
00078 
00079     // Constructors
00080 
00081         //- Construct from wavenumber mesh and timestep
00082         UOprocess
00083         (
00084             const Kmesh& kmesh,
00085             const scalar deltaT,
00086             const dictionary&
00087         );
00088 
00089 
00090     // Member Functions
00091 
00092         const complexVectorField& newField();
00093 };
00094 
00095 
00096 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00097 
00098 } // End namespace Foam
00099 
00100 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
00101 
00102 #endif
00103 
00104 // ************************************************************************* //
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