PrandtlDelta.C
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25 
26 #include "PrandtlDelta.H"
27 #include "wallDist.H"
29 
30 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
31 
32 namespace Foam
33 {
34 namespace LESModels
35 {
38 }
39 }
40 
41 
42 // * * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * //
43 
44 void Foam::LESModels::PrandtlDelta::calcDelta()
45 {
46  delta_ = min
47  (
48  static_cast<const volScalarField&>(geometricDelta_()),
49  (kappa_/Cdelta_)*wallDist::New(momentumTransportModel_.mesh()).y()
50  );
51 }
52 
53 
54 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
55 
57 (
58  const word& name,
60  const dictionary& dict
61 )
62 :
64  geometricDelta_
65  (
66  LESdelta::New
67  (
68  name,
69  turbulence,
70  dict.subDict(type() + "Coeffs")
71  )
72  ),
73  kappa_(dict.lookupOrDefault<scalar>("kappa", 0.41)),
74  Cdelta_
75  (
76  dict.subDict(type() + "Coeffs").lookupOrDefault<scalar>
77  (
78  "Cdelta",
79  0.158
80  )
81  )
82 {
83  calcDelta();
84 }
85 
86 
87 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
88 
90 {
91  const dictionary& coeffDict(dict.subDict(type() + "Coeffs"));
92 
93  geometricDelta_().read(coeffDict);
94  dict.readIfPresent<scalar>("kappa", kappa_);
95  coeffDict.readIfPresent<scalar>("Cdelta", Cdelta_);
96  calcDelta();
97 }
98 
99 
101 {
102  geometricDelta_().correct();
103 
104  if (momentumTransportModel_.mesh().changing())
105  {
106  calcDelta();
107  }
108 }
109 
110 
111 // ************************************************************************* //
Macros for easy insertion into run-time selection tables.
static wallDist & New(const word &name, const fvMesh &mesh)
Construct and return the named DemandDrivenMeshObject.
Apply Prandtl mixing-length based damping function to the specified geometric delta to improve near-w...
Definition: PrandtlDelta.H:77
PrandtlDelta(const word &name, const momentumTransportModel &turbulence, const dictionary &)
Construct from name, momentumTransportModel and dictionary.
Definition: PrandtlDelta.C:57
virtual void read(const dictionary &)
Read the LESdelta dictionary.
Definition: PrandtlDelta.C:89
Abstract base class for LES deltas.
Definition: LESdelta.H:51
volScalarField delta_
Definition: LESdelta.H:58
const momentumTransportModel & momentumTransportModel_
Definition: LESdelta.H:56
A list of keyword definitions, which are a keyword followed by any number of values (e....
Definition: dictionary.H:162
bool readIfPresent(const word &, T &, bool recursive=false, bool patternMatch=true) const
Find an entry if present, and assign to T.
Abstract base class for turbulence models (RAS, LES and laminar).
const volScalarField & y() const
Return reference to cached distance-to-wall field.
Definition: wallDist.H:151
A class for handling words, derived from string.
Definition: word.H:62
defineTypeNameAndDebug(cubeRootVolDelta, 0)
addToRunTimeSelectionTable(LESdelta, cubeRootVolDelta, dictionary)
Namespace for OpenFOAM.
word name(const bool)
Return a word representation of a bool.
Definition: boolIO.C:39
layerAndWeight min(const layerAndWeight &a, const layerAndWeight &b)
VolField< scalar > volScalarField
Definition: volFieldsFwd.H:64
tmp< DimensionedField< TypeR, GeoMesh > > New(const tmp< DimensionedField< TypeR, GeoMesh >> &tdf1, const word &name, const dimensionSet &dimensions)
fileType type(const fileName &, const bool checkVariants=true, const bool followLink=true)
Return the file type: directory or file.
Definition: POSIX.C:488
dictionary dict
autoPtr< incompressible::momentumTransportModel > turbulence(incompressible::momentumTransportModel::New(U, phi, viscosity))