FreeFOAM The Cross-Platform CFD Toolkit
Smagorinsky2.C
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25 
26 #include "Smagorinsky2.H"
28 
29 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
30 
31 namespace Foam
32 {
33 namespace incompressible
34 {
35 namespace LESModels
36 {
37 
38 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
39 
40 defineTypeNameAndDebug(Smagorinsky2, 0);
41 addToRunTimeSelectionTable(LESModel, Smagorinsky2, dictionary);
42 
43 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
44 
45 Smagorinsky2::Smagorinsky2
46 (
47  const volVectorField& U,
48  const surfaceScalarField& phi,
49  transportModel& transport
50 )
51 :
52  LESModel(typeName, U, phi, transport),
53  Smagorinsky(U, phi, transport),
54 
55  cD2_
56  (
58  (
59  "cD2",
60  coeffDict_,
61  0.02
62  )
63  )
64 {
65  printCoeffs();
66 }
67 
68 
69 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
70 
71 // Evaluate B (from the definition of an eddy viscosity model) and
72 // return it.
73 
75 {
77 
78  return (((2.0/3.0)*I)*k() - 2.0*nuSgs_*D - (2.0*cD2_)*delta()*(D&D));
79 }
80 
81 
83 (
85 ) const
86 {
87  volTensorField gradU = fvc::grad(U);
88 
89  volSymmTensorField aniNuEff
90  (
91  "aniNuEff",
92  I*nuEff() + cD2_*delta()*symm(gradU)
93  );
94 
95  return
96  (
97  - fvm::laplacian(aniNuEff, U) - fvc::div(nuEff()*dev(fvc::grad(U)().T()))
98  );
99 }
100 
101 
103 {
104  if (Smagorinsky::read())
105  {
106  cD2.readIfPresent(coeffDict());
107 
108  return true;
109  }
110  else
111  {
112  return false;
113  }
114 }
115 
116 
117 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
118 
119 } // End namespace LESModels
120 } // End namespace incompressible
121 } // End namespace Foam
122 
123 // ************************ vim: set sw=4 sts=4 et: ************************ //