BirdCarreau.C
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25 
26 #include "BirdCarreau.H"
28 #include "surfaceFields.H"
29 
30 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
31 
32 namespace Foam
33 {
34 namespace viscosityModels
35 {
38  (
42  );
43 }
44 }
45 
46 
47 // * * * * * * * * * * * * Private Member Functions * * * * * * * * * * * * //
48 
50 Foam::viscosityModels::BirdCarreau::calcNu() const
51 {
52  return
53  nuInf_
54  + (nu0_ - nuInf_)
55  *pow(scalar(1) + pow(k_*strainRate(), a_), (n_ - 1.0)/a_);
56 }
57 
58 
59 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
60 
62 (
63  const word& name,
64  const dictionary& viscosityProperties,
65  const volVectorField& U,
66  const surfaceScalarField& phi
67 )
68 :
69  viscosityModel(name, viscosityProperties, U, phi),
70  BirdCarreauCoeffs_(viscosityProperties.subDict(typeName + "Coeffs")),
71  nu0_("nu0", dimViscosity, BirdCarreauCoeffs_),
72  nuInf_("nuInf", dimViscosity, BirdCarreauCoeffs_),
73  k_("k", dimTime, BirdCarreauCoeffs_),
74  n_("n", dimless, BirdCarreauCoeffs_),
75  a_
76  (
77  BirdCarreauCoeffs_.lookupOrDefault
78  (
79  "a",
80  dimensionedScalar("a", dimless, 2)
81  )
82  ),
83  nu_
84  (
85  IOobject
86  (
87  "nu",
88  U_.time().timeName(),
89  U_.db(),
92  ),
93  calcNu()
94  )
95 {}
96 
97 
98 // * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * * //
99 
101 (
102  const dictionary& viscosityProperties
103 )
104 {
105  viscosityModel::read(viscosityProperties);
106 
107  BirdCarreauCoeffs_ = viscosityProperties.subDict(typeName + "Coeffs");
108 
109  BirdCarreauCoeffs_.lookup("nu0") >> nu0_;
110  BirdCarreauCoeffs_.lookup("nuInf") >> nuInf_;
111  BirdCarreauCoeffs_.lookup("k") >> k_;
112  BirdCarreauCoeffs_.lookup("n") >> n_;
113  a_ = BirdCarreauCoeffs_.lookupOrDefault
114  (
115  "a",
116  dimensionedScalar("a", dimless, 2)
117  );
118 
119  return true;
120 }
121 
122 
123 // ************************************************************************* //
addToRunTimeSelectionTable(viscosityModel, BirdCarreau, dictionary)
Foam::surfaceFields.
dimensionedScalar pow(const dimensionedScalar &ds, const dimensionedScalar &expt)
const dimensionSet dimTime(0, 0, 1, 0, 0, 0, 0)
Definition: dimensionSets.H:51
An abstract base class for incompressible viscosityModels.
A class for handling words, derived from string.
Definition: word.H:59
A list of keyword definitions, which are a keyword followed by any number of values (e...
Definition: dictionary.H:137
const dictionary & subDict(const word &) const
Find and return a sub-dictionary.
Definition: dictionary.C:638
Namespace for OpenFOAM.
IOobject defines the attributes of an object for which implicit objectRegistry management is supporte...
Definition: IOobject.H:91
An incompressible Bird-Carreau non-Newtonian viscosity model.
Definition: BirdCarreau.H:55
const dimensionSet dimViscosity
Macros for easy insertion into run-time selection tables.
defineTypeNameAndDebug(BirdCarreau, 0)
BirdCarreau(const word &name, const dictionary &viscosityProperties, const volVectorField &U, const surfaceScalarField &phi)
Construct from components.
Definition: BirdCarreau.C:62
virtual bool read(const dictionary &viscosityProperties)=0
Read transportProperties dictionary.
ITstream & lookup(const word &, bool recursive=false, bool patternMatch=true) const
Find and return an entry data stream.
Definition: dictionary.C:452
const dimensionSet dimless(0, 0, 0, 0, 0, 0, 0)
Definition: dimensionSets.H:47
dimensioned< scalar > dimensionedScalar
Dimensioned scalar obtained from generic dimensioned type.
A class for managing temporary objects.
Definition: PtrList.H:118
bool read(const dictionary &viscosityProperties)
Read transportProperties dictionary.
Definition: BirdCarreau.C:101