FreeFOAM The Cross-Platform CFD Toolkit
JohnsonJacksonFrictionalStress.C
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5  \\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
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25 
28 
29 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
30 
31 namespace Foam
32 {
33  defineTypeNameAndDebug(JohnsonJacksonFrictionalStress, 0);
34 
36  (
37  frictionalStressModel,
38  JohnsonJacksonFrictionalStress,
39  dictionary
40  );
41 }
42 
43 
44 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
45 
47 (
48  const dictionary& dict
49 )
50 :
52 {}
53 
54 
55 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
56 
58 {}
59 
60 
61 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
62 
65 (
66  const volScalarField& alpha,
67  const dimensionedScalar& alphaMinFriction,
69  const dimensionedScalar& Fr,
70  const dimensionedScalar& eta,
71  const dimensionedScalar& p
72 ) const
73 {
74 
75  return
76  Fr*pow(max(alpha - alphaMinFriction, scalar(0)), eta)
77  /pow(max(alphaMax - alpha, scalar(5.0e-2)), p);
78 }
79 
80 
83 (
84  const volScalarField& alpha,
85  const dimensionedScalar& alphaMinFriction,
86  const dimensionedScalar& alphaMax,
87  const dimensionedScalar& Fr,
88  const dimensionedScalar& eta,
89  const dimensionedScalar& p
90 ) const
91 {
92  return Fr*
93  (
94  eta*pow(max(alpha - alphaMinFriction, scalar(0)), eta - 1.0)
95  *(alphaMax-alpha) + p*pow(max(alpha - alphaMinFriction, scalar(0)), eta)
96  )/pow(max(alphaMax - alpha, scalar(5.0e-2)), p + 1.0);
97 }
98 
99 
101 (
102  const volScalarField& alpha,
103  const dimensionedScalar& alphaMax,
104  const volScalarField& pf,
105  const volSymmTensorField& D,
106  const dimensionedScalar& phi
107 ) const
108 {
109  return dimensionedScalar("0.5", dimTime, 0.5)*pf*sin(phi);
110 }
111 
112 
113 // ************************ vim: set sw=4 sts=4 et: ************************ //