HarrisCrighton.C
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25 
26 #include "HarrisCrighton.H"
28 
29 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
30 
31 namespace Foam
32 {
33 namespace ParticleStressModels
34 {
35  defineTypeNameAndDebug(HarrisCrighton, 0);
36 
38  (
39  ParticleStressModel,
40  HarrisCrighton,
41  dictionary
42  );
43 }
44 }
45 
46 
47 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
48 
50 (
51  const dictionary& dict
52 )
53 :
54  ParticleStressModel(dict),
55  pSolid_(dict.template lookup<scalar>("pSolid")),
56  beta_(dict.template lookup<scalar>("beta")),
57  eps_(dict.template lookup<scalar>("eps"))
58 {}
59 
60 
62 (
63  const HarrisCrighton& hc
64 )
65 :
67  pSolid_(hc.pSolid_),
68  beta_(hc.beta_),
69  eps_(hc.eps_)
70 {}
71 
72 
73 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
74 
76 {}
77 
78 
79 // * * * * * * * * * * * * * Privare Member Functions * * * * * * * * * * * //
80 
82 Foam::ParticleStressModels::HarrisCrighton::denominator
83 (
84  const Field<scalar>& alpha
85 ) const
86 {
87  return
88  max
89  (
90  alphaPacked_ - alpha,
91  max(eps_*(1.0 - alpha), small)
92  );
93 }
94 
95 
96 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
97 
100 (
101  const Field<scalar>& alpha,
102  const Field<scalar>& rho,
103  const Field<scalar>& uSqr
104 ) const
105 {
106  return
107  (
108  pSolid_
109  * pow(alpha, beta_)
110  / denominator(alpha)
111  );
112 }
113 
114 
117 (
118  const Field<scalar>& alpha,
119  const Field<scalar>& rho,
120  const Field<scalar>& uSqr
121 ) const
122 {
123  const Field<scalar> d(denominator(alpha));
124 
125  return
126  (
127  pSolid_
128  * pow(alpha, beta_)
129  / d
130  * (beta_/alpha + 1.0/d)
131  );
132 }
133 
134 
135 // ************************************************************************* //
layerAndWeight max(const layerAndWeight &a, const layerAndWeight &b)
A list of keyword definitions, which are a keyword followed by any number of values (e...
Definition: dictionary.H:156
Inter-particle stress model of Harris and Crighton.
HarrisCrighton(const dictionary &dict)
Constructors.
Macros for easy insertion into run-time selection tables.
tmp< Field< scalar > > dTaudTheta(const Field< scalar > &alpha, const Field< scalar > &rho, const Field< scalar > &uRms) const
Collision stress derivative w.r.t. the volume fraction.
tmp< Field< scalar > > tau(const Field< scalar > &alpha, const Field< scalar > &rho, const Field< scalar > &uRms) const
Member Functions.
addToRunTimeSelectionTable(ParticleStressModel, exponential, dictionary)
dimensionedScalar pow(const dimensionedScalar &ds, const dimensionedScalar &expt)
A class for managing temporary objects.
Definition: PtrList.H:53
Base class for inter-particle stress models.
Namespace for OpenFOAM.
defineTypeNameAndDebug(exponential, 0)