FreeFOAM The Cross-Platform CFD Toolkit
SpalartAllmaras.H
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23 
24 Class
25  Foam::compressible::LESModels::SpalartAllmaras
26 
27 Description
28  SpalartAllmaras for compressible flows
29 
30 SourceFiles
31  SpalartAllmaras.C
32 
33 \*---------------------------------------------------------------------------*/
34 
35 #ifndef compressibleSpalartAllmaras_H
36 #define compressibleSpalartAllmaras_H
37 
39 #include <finiteVolume/volFields.H>
40 
41 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
42 
43 namespace Foam
44 {
45 namespace compressible
46 {
47 namespace LESModels
48 {
49 
50 /*---------------------------------------------------------------------------*\
51  Class SpalartAllmaras Declaration
52 \*---------------------------------------------------------------------------*/
53 
55 :
56  public LESModel
57 {
58  // Private data
59 
60  // Model coefficients
61 
62  dimensionedScalar sigmaNut_;
63  dimensionedScalar Prt_;
64 
65  dimensionedScalar Cb1_;
66  dimensionedScalar Cb2_;
67  dimensionedScalar Cv1_;
68  dimensionedScalar Cv2_;
69  dimensionedScalar CDES_;
71  dimensionedScalar kappa_;
72  dimensionedScalar Cw1_;
73  dimensionedScalar Cw2_;
74  dimensionedScalar Cw3_;
75 
76 
77  // Fields
78 
79  volScalarField nuTilda_;
80  volScalarField dTilda_;
81  volScalarField muSgs_;
82  volScalarField alphaSgs_;
83 
84 
85  // Private member functions
86 
87  //- Update sub-grid scale fields
88  void updateSubGridScaleFields();
89 
90  tmp<volScalarField> fv1() const;
91  tmp<volScalarField> fv2() const;
92  tmp<volScalarField> fv3() const;
93  tmp<volScalarField> fw(const volScalarField& Stilda) const;
94 
95  // Disallow default bitwise copy construct and assignment
97  SpalartAllmaras& operator=(const SpalartAllmaras&);
98 
99 
100 public:
101 
102  //- Runtime type information
103  TypeName("SpalartAllmaras");
104 
105 
106  // Constructors
107 
108  //- Constructor from components
110  (
111  const volScalarField& rho,
112  const volVectorField& U,
113  const surfaceScalarField& phi,
114  const basicThermo& thermoPhysicalModel
115  );
116 
117 
118  //- Destructor
119  virtual ~SpalartAllmaras()
120  {}
121 
122 
123  // Member Functions
124 
126  {
127  return nuTilda_;
128  }
129 
130  //- Return SGS kinetic energy
131  virtual tmp<volScalarField> k() const
132  {
133  return sqr(muSgs()/rho()/ck_/dTilda_);
134  }
135 
136  //- Return sub-grid disipation rate
137  virtual tmp<volScalarField> epsilon() const;
138 
139  //- Return SGS viscosity
140  virtual tmp<volScalarField> muSgs() const
141  {
142  return muSgs_;
143  }
144 
145  //- Return SGS thermal diffusivity
147  {
148  return alphaSgs_;
149  }
150 
151  //- Return thermal conductivity
153  {
154  return tmp<volScalarField>
155  (
156  new volScalarField("alphaEff", alphaSgs_ + alpha())
157  );
158  }
159 
160  //- Return the sub-grid stress tensor.
161  virtual tmp<volSymmTensorField> B() const;
162 
163  //- Return the deviatoric part of the effective sub-grid
164  // turbulence stress tensor including the laminar stress
165  virtual tmp<volSymmTensorField> devRhoBeff() const;
166 
167  //- Returns div(rho*dev(B)).
168  // This is the additional term due to the filtering of the NSE.
169  virtual tmp<fvVectorMatrix> divDevRhoBeff(volVectorField& U) const;
170 
171  //- Correct nuTilda and related properties
172  virtual void correct(const tmp<volTensorField>& gradU);
173 
174  //- Read LESProperties dictionary
175  virtual bool read();
176 };
177 
178 
179 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
180 
181 } // End namespace LESModels
182 } // End namespace compressible
183 } // End namespace Foam
184 
185 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
186 
187 #endif
188 
189 // ************************ vim: set sw=4 sts=4 et: ************************ //