1 /*---------------------------------------------------------------------------*\
3 \\ / F ield | foam-extend: Open Source CFD
4 \\ / O peration | Version: 3.2
5 \\ / A nd | Web: http://www.foam-extend.org
6 \\/ M anipulation | For copyright notice see file Copyright
7 -------------------------------------------------------------------------------
9 This file is part of foam-extend.
11 foam-extend is free software: you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by the
13 Free Software Foundation, either version 3 of the License, or (at your
14 option) any later version.
16 foam-extend is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with foam-extend. If not, see <http://www.gnu.org/licenses/>.
28 Generates an analytical solution for potential flow around a cylinder.
29 Can be compared with the solution from the potentialFlow/cylinder example.
31 \*---------------------------------------------------------------------------*/
36 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
38 int main(int argc, char *argv[])
41 # include "setRootCase.H"
43 # include "createTime.H"
44 # include "createMesh.H"
45 # include "createFields.H"
47 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
49 Info << "\nEvaluating analytical solution" << endl;
51 volVectorField centres = UA.mesh().C();
52 volScalarField magCentres = mag(centres);
53 volScalarField theta = acos((centres & vector(1,0,0))/magCentres);
55 volVectorField cs2theta =
56 cos(2*theta)*vector(1,0,0)
57 + sin(2*theta)*vector(0,1,0);
59 UA = uInfX*(dimensionedVector(vector(1,0,0))
60 - pow((radius/magCentres),2)*cs2theta);
69 // ************************************************************************* //