FreeFOAM The Cross-Platform CFD Toolkit
Kunz.H
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23 
24 Class
25  Foam::phaseChangeTwoPhaseMixtures::Kunz
26 
27 Description
28  Kunz cavitation model slightly modified so that the condensation term
29  is switched off when the pressure is less than the saturation vapour
30  pressure. This change allows the condensation term to be formulated as
31  a coefficient multiplying (p - p_sat) so that it can be included as an
32  implicit term in the pressure equation.
33 
34  Reference:
35  @verbatim
36  Kunz, R.F., Boger, D.A., Stinebring, D.R., Chyczewski, Lindau. J.W.,
37  Gibeling, H.J., Venkateswaran, S., Govindan, T.R.,
38  "A Preconditioned Implicit Method for Two-Phase Flows with Application
39  to Cavitation Prediction,"
40  Computers and Fluids,
41  29(8):849-875, 2000.
42  @endverbatim
43 
44 SourceFiles
45  Kunz.C
46 
47 \*--------------------------------------------------------------------*/
48 
49 #ifndef Kunz_H
50 #define Kunz_H
51 
53 
54 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
55 
56 namespace Foam
57 {
58 namespace phaseChangeTwoPhaseMixtures
59 {
60 
61 /*--------------------------------------------------------------------*\
62  Class Kunz
63 \*--------------------------------------------------------------------*/
64 
65 class Kunz
66 :
68 {
69  // Private data
70 
71  dimensionedScalar UInf_;
72  dimensionedScalar tInf_;
75 
77 
78  dimensionedScalar mcCoeff_;
79  dimensionedScalar mvCoeff_;
80 
81 
82 public:
83 
84  //- Runtime type information
85  TypeName("Kunz");
86 
87 
88  // Constructors
89 
90  //- construct from components
91  Kunz
92  (
93  const volVectorField& U,
94  const surfaceScalarField& phi,
95  const word& alpha1Name = "alpha1"
96  );
97 
98 
99  // Destructor
100 
101  virtual ~Kunz()
102  {}
103 
104 
105  // Member Functions
106 
107  //- Return the mass condensation and vaporisation rates as a
108  // coefficient to multiply (1 - alphal) for the condensation rate
109  // and a coefficient to multiply alphal for the vaporisation rate
110  virtual Pair<tmp<volScalarField> > mDotAlphal() const;
111 
112  //- Return the mass condensation and vaporisation rates as an
113  // explicit term for the condensation rate and a coefficient to
114  // multiply (p - pSat) for the vaporisation rate
115  virtual Pair<tmp<volScalarField> > mDotP() const;
116 
117  //- Correct the Kunz phaseChange model
118  virtual void correct();
119 
120  //- Read the transportProperties dictionary and update
121  virtual bool read();
122 };
123 
124 
125 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
126 
127 } // End namespace phaseChangeTwoPhaseMixtures
128 } // End namespace Foam
129 
130 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
131 
132 #endif
133 
134 // ************************ vim: set sw=4 sts=4 et: ************************ //