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SSG.H
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23 
24 Class
25  Foam::RASModels::SSG
26 
27 Description
28  Speziale, Sarkar and Gatski Reynolds-stress turbulence model for
29  incompressible and compressible flows.
30 
31  Reference:
32  \verbatim
33  Speziale, C. G., Sarkar, S., & Gatski, T. B. (1991).
34  Modelling the pressure–strain correlation of turbulence:
35  an invariant dynamical systems approach.
36  Journal of Fluid Mechanics, 227, 245-272.
37  \endverbatim
38 
39  Including the generalized gradient diffusion model of
40  Daly and Harlow:
41  \verbatim
42  Daly, B. J., & Harlow, F. H. (1970).
43  Transport equations in turbulence.
44  Physics of Fluids (1958-1988), 13(11), 2634-2649.
45  \endverbatim
46 
47  The default model coefficients are:
48  \verbatim
49  SSGCoeffs
50  {
51  Cmu 0.09;
52 
53  C1 3.4;
54  C1s 1.8;
55  C2 4.2;
56  C3 0.8;
57  C3s 1.3;
58  C4 1.25;
59  C5 0.4;
60 
61  Ceps1 1.44;
62  Ceps2 1.92;
63  Cs 0.25;
64  Ceps 0.15;
65 
66  couplingFactor 0.0;
67  }
68  \endverbatim
69 
70 SourceFiles
71  SSG.C
72 
73 \*---------------------------------------------------------------------------*/
74 
75 #ifndef SSG_H
76 #define SSG_H
77 
78 #include "RASModel.H"
79 #include "ReynoldsStress.H"
80 
81 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
82 
83 namespace Foam
84 {
85 namespace RASModels
86 {
87 
88 /*---------------------------------------------------------------------------*\
89  Class SSG Declaration
90 \*---------------------------------------------------------------------------*/
91 
92 template<class BasicMomentumTransportModel>
93 class SSG
94 :
95  public ReynoldsStress<RASModel<BasicMomentumTransportModel>>
96 {
97 protected:
98 
99  // Protected data
100 
101  // Model coefficients
117 
118  // Fields
122 
123 
124  // Protected Member Functions
125 
126  //- Update the eddy-viscosity
127  virtual void correctNut();
128 
129 
130 public:
132  typedef typename BasicMomentumTransportModel::alphaField alphaField;
133  typedef typename BasicMomentumTransportModel::rhoField rhoField;
134  typedef typename BasicMomentumTransportModel::transportModel transportModel;
135 
136 
137  //- Runtime type information
138  TypeName("SSG");
139 
140 
141  // Constructors
142 
143  //- Construct from components
144  SSG
145  (
146  const alphaField& alpha,
147  const rhoField& rho,
148  const volVectorField& U,
149  const surfaceScalarField& alphaRhoPhi,
150  const surfaceScalarField& phi,
151  const transportModel& transport,
152  const word& type = typeName
153  );
154 
155  //- Disallow default bitwise copy construction
156  SSG(const SSG&) = delete;
157 
158 
159  //- Destructor
160  virtual ~SSG()
161  {}
162 
163 
164  // Member Functions
165 
166  //- Read model coefficients if they have changed
167  virtual bool read();
168 
169  //- Return the turbulence kinetic energy
170  virtual tmp<volScalarField> k() const
171  {
172  return k_;
173  }
174 
175  //- Return the turbulence kinetic energy dissipation rate
176  virtual tmp<volScalarField> epsilon() const
177  {
178  return epsilon_;
179  }
180 
181  //- Return the effective diffusivity for R
183 
184  //- Return the effective diffusivity for epsilon
186 
187  //- Solve the turbulence equations and correct eddy-Viscosity and
188  // related properties
189  virtual void correct();
190 
191 
192  // Member Operators
193 
194  //- Disallow default bitwise assignment
195  void operator=(const SSG&) = delete;
196 };
197 
198 
199 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
200 
201 } // End namespace RASModels
202 } // End namespace Foam
203 
204 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
205 
206 #ifdef NoRepository
207  #include "SSG.C"
208 #endif
209 
210 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
211 
212 #endif
213 
214 // ************************************************************************* //
BasicMomentumTransportModel::alphaField alphaField
Definition: SSG.H:131
dimensionedScalar C2_
Definition: SSG.H:106
tmp< volSymmTensorField > DREff() const
Return the effective diffusivity for R.
Definition: SSG.C:250
TypeName("SSG")
Runtime type information.
tmp< volSymmTensorField > DepsilonEff() const
Return the effective diffusivity for epsilon.
Definition: SSG.C:261
dimensionedScalar Ceps2_
Definition: SSG.H:113
dimensionedScalar C5_
Definition: SSG.H:110
dimensionedScalar C3_
Definition: SSG.H:107
dimensionedScalar C3s_
Definition: SSG.H:108
Speziale, Sarkar and Gatski Reynolds-stress turbulence model for incompressible and compressible flow...
Definition: SSG.H:92
phi
Definition: pEqn.H:104
dimensionedScalar Cmu_
Definition: SSG.H:102
virtual void correct()
Solve the turbulence equations and correct eddy-Viscosity and.
Definition: SSG.C:272
SSG(const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const transportModel &transport, const word &type=typeName)
Construct from components.
Definition: SSG.C:52
dimensionedScalar C4_
Definition: SSG.H:109
void operator=(const SSG &)=delete
Disallow default bitwise assignment.
virtual tmp< volScalarField > epsilon() const
Return the turbulence kinetic energy dissipation rate.
Definition: SSG.H:175
dimensionedScalar Cs_
Definition: SSG.H:114
A class for handling words, derived from string.
Definition: word.H:59
volScalarField k_
Definition: SSG.H:119
BasicMomentumTransportModel::transportModel transportModel
Definition: SSG.H:133
volScalarField epsilon_
Definition: SSG.H:120
virtual bool read()
Read model coefficients if they have changed.
Definition: SSG.C:222
U
Definition: pEqn.H:72
dimensionedScalar Ceps_
Definition: SSG.H:115
fileType type(const fileName &, const bool checkVariants=true, const bool followLink=true)
Return the file type: directory or file.
Definition: POSIX.C:488
BasicMomentumTransportModel::rhoField rhoField
Definition: SSG.H:132
dimensionedScalar C1s_
Definition: SSG.H:105
volScalarField alpha(IOobject("alpha", runTime.timeName(), mesh, IOobject::READ_IF_PRESENT, IOobject::AUTO_WRITE), lambda *max(Ua &U, zeroSensitivity))
virtual tmp< volScalarField > k() const
Return the turbulence kinetic energy.
Definition: SSG.H:169
A class for managing temporary objects.
Definition: PtrList.H:53
virtual void correctNut()
Update the eddy-viscosity.
Definition: SSG.C:40
dimensionedScalar Ceps1_
Definition: SSG.H:112
dimensionedScalar C1_
Definition: SSG.H:104
Namespace for OpenFOAM.
virtual ~SSG()
Destructor.
Definition: SSG.H:159
Reynolds-stress turbulence model base class.