FreeFOAM The Cross-Platform CFD Toolkit
potentialFoam.C
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5  \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
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23 
24 Application
25  potentialFoam
26 
27 Description
28  Simple potential flow solver which can be used to generate starting fields
29  for full Navier-Stokes codes.
30 
31 Usage
32  - potentialFoam [OPTION]
33 
34  @param -writep \n
35  Also write the pressure field
36 
37  @param -case <dir> \n
38  Specify the case directory
39 
40  @param -parallel \n
41  Run the case in parallel
42 
43  @param -help \n
44  Display short usage message
45 
46  @param -doc \n
47  Display Doxygen documentation page
48 
49  @param -srcDoc \n
50  Display source code
51 
52 \*---------------------------------------------------------------------------*/
53 
54 #include <finiteVolume/fvCFD.H>
55 
56 
57 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
58 
59 int main(int argc, char *argv[])
60 {
61 
62  argList::validOptions.insert("writep", "");
63 
64 # include <OpenFOAM/setRootCase.H>
65 
66 # include <OpenFOAM/createTime.H>
67 # include <OpenFOAM/createMesh.H>
68 # include "createFields.H"
70 
71 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
72 
73  Info<< nl << "Calculating potential flow" << endl;
74 
75  adjustPhi(phi, U, p);
76 
77  for (int nonOrth=0; nonOrth<=nNonOrthCorr; nonOrth++)
78  {
79  fvScalarMatrix pEqn
80  (
82  (
84  (
85  "1",
86  dimTime/p.dimensions()*dimensionSet(0, 2, -2, 0, 0),
87  1
88  ),
89  p
90  )
91  ==
92  fvc::div(phi)
93  );
94 
96  pEqn.solve();
97 
98  if (nonOrth == nNonOrthCorr)
99  {
100  phi -= pEqn.flux();
101  }
102  }
103 
104  Info<< "continuity error = "
105  << mag(fvc::div(phi))().weightedAverage(mesh.V()).value()
106  << endl;
107 
109  U.correctBoundaryConditions();
110 
111  Info<< "Interpolated U error = "
112  << (sqrt(sum(sqr((fvc::interpolate(U) & mesh.Sf()) - phi)))
113  /sum(mesh.magSf())).value()
114  << endl;
115 
116  // Force the write
117  U.write();
118  phi.write();
119 
120  if (args.optionFound("writep"))
121  {
122  p.write();
123  }
124 
125  Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
126  << " ClockTime = " << runTime.elapsedClockTime() << " s"
127  << nl << endl;
128 
129  Info<< "End\n" << endl;
130 
131  return 0;
132 }
133 
134 
135 // ************************ vim: set sw=4 sts=4 et: ************************ //