FreeFOAM The Cross-Platform CFD Toolkit
icoFoam.C
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1 /*---------------------------------------------------------------------------*\
2  ========= |
3  \\ / F ield | OpenFOAM: The Open Source CFD Toolbox
4  \\ / O peration |
5  \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
6  \\/ M anipulation |
7 -------------------------------------------------------------------------------
8 License
9  This file is part of OpenFOAM.
10 
11  OpenFOAM is free software: you can redistribute it and/or modify it
12  under the terms of the GNU General Public License as published by
13  the Free Software Foundation, either version 3 of the License, or
14  (at your option) any later version.
15 
16  OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
17  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
18  FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19  for more details.
20 
21  You should have received a copy of the GNU General Public License
22  along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
23 
24 Application
25  icoFoam
26 
27 Description
28  Transient solver for incompressible, laminar flow of Newtonian fluids.
29 
30 Usage
31  - icoFoam [OPTION]
32 
33  @param -case <dir> \n
34  Specify the case directory
35 
36  @param -parallel \n
37  Run the case in parallel
38 
39  @param -help \n
40  Display short usage message
41 
42  @param -doc \n
43  Display Doxygen documentation page
44 
45  @param -srcDoc \n
46  Display source code
47 
48 \*---------------------------------------------------------------------------*/
49 
50 #include <finiteVolume/fvCFD.H>
51 
52 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
53 
54 int main(int argc, char *argv[])
55 {
56  #include <OpenFOAM/setRootCase.H>
57 
58  #include <OpenFOAM/createTime.H>
59  #include <OpenFOAM/createMesh.H>
60  #include "createFields.H"
62 
63  // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
64 
65  Info<< "\nStarting time loop\n" << endl;
66 
67  while (runTime.loop())
68  {
69  Info<< "Time = " << runTime.timeName() << nl << endl;
70 
72  #include <finiteVolume/CourantNo.H>
73 
75  (
76  fvm::ddt(U)
77  + fvm::div(phi, U)
78  - fvm::laplacian(nu, U)
79  );
80 
81  solve(UEqn == -fvc::grad(p));
82 
83  // --- PISO loop
84 
85  for (int corr=0; corr<nCorr; corr++)
86  {
87  volScalarField rUA = 1.0/UEqn.A();
88 
89  U = rUA*UEqn.H();
90  phi = (fvc::interpolate(U) & mesh.Sf())
91  + fvc::ddtPhiCorr(rUA, U, phi);
92 
93  adjustPhi(phi, U, p);
94 
95  for (int nonOrth=0; nonOrth<=nNonOrthCorr; nonOrth++)
96  {
97  fvScalarMatrix pEqn
98  (
99  fvm::laplacian(rUA, p) == fvc::div(phi)
100  );
101 
102  pEqn.setReference(pRefCell, pRefValue);
103  pEqn.solve();
104 
105  if (nonOrth == nNonOrthCorr)
106  {
107  phi -= pEqn.flux();
108  }
109  }
110 
112 
113  U -= rUA*fvc::grad(p);
114  U.correctBoundaryConditions();
115  }
116 
117  runTime.write();
118 
119  Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
120  << " ClockTime = " << runTime.elapsedClockTime() << " s"
121  << nl << endl;
122  }
123 
124  Info<< "End\n" << endl;
125 
126  return 0;
127 }
128 
129 
130 // ************************ vim: set sw=4 sts=4 et: ************************ //