FreeFOAM The Cross-Platform CFD Toolkit
PrandtlDelta.C
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5  \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
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25 
26 #include "PrandtlDelta.H"
27 #include <finiteVolume/wallDist.H>
29 
30 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
31 
32 namespace Foam
33 {
34 
35 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
36 
37 defineTypeNameAndDebug(PrandtlDelta, 0);
38 addToRunTimeSelectionTable(LESdelta, PrandtlDelta, dictionary);
39 
40 
41 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
42 
43 void PrandtlDelta::calcDelta()
44 {
45  delta_ = min
46  (
47  static_cast<const volScalarField&>(geometricDelta_()),
48  (kappa_/Cdelta_)*wallDist(mesh_).y()
49  );
50 }
51 
52 
53 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
54 
55 PrandtlDelta::PrandtlDelta
56 (
57  const word& name,
58  const fvMesh& mesh,
59  const dictionary& dd
60 )
61 :
62  LESdelta(name, mesh),
63  geometricDelta_(LESdelta::New(name, mesh, dd.subDict(type() + "Coeffs"))),
64  kappa_(dd.lookupOrDefault<scalar>("kappa", 0.41)),
65  Cdelta_
66  (
67  dd.subDict(type() + "Coeffs").lookupOrDefault<scalar>("Cdelta", 0.158)
68  )
69 {
70  calcDelta();
71 }
72 
73 
74 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
75 
77 {
78  const dictionary& dd(d.subDict(type() + "Coeffs"));
79 
80  geometricDelta_().read(dd);
81  d.readIfPresent<scalar>("kappa", kappa_);
82  dd.readIfPresent<scalar>("Cdelta", Cdelta_);
83  calcDelta();
84 }
85 
86 
88 {
89  geometricDelta_().correct();
90 
91  if (mesh_.changing())
92  {
93  calcDelta();
94  }
95 }
96 
97 
98 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
99 
100 } // End namespace Foam
101 
102 // ************************ vim: set sw=4 sts=4 et: ************************ //