IshiiZuber.C
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25 
26 #include "IshiiZuber.H"
27 #include "phasePair.H"
29 
30 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
31 
32 namespace Foam
33 {
34 namespace dragModels
35 {
36  defineTypeNameAndDebug(IshiiZuber, 0);
37  addToRunTimeSelectionTable(dragModel, IshiiZuber, dictionary);
38 }
39 }
40 
41 
42 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
43 
45 (
46  const dictionary& dict,
47  const phasePair& pair,
48  const bool registerObject
49 )
50 :
51  dragModel(dict, pair, registerObject)
52 {}
53 
54 
55 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
56 
58 {}
59 
60 
61 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
62 
65 {
67  volScalarField Eo(pair_.Eo());
68 
71 
72  volScalarField muStar((mud + 0.4*muc)/(mud + muc));
73 
74  volScalarField muMix
75  (
76  muc
77  *pow(max(1 - pair_.dispersed(), scalar(1e-3)), -2.5*muStar)
78  );
79 
80  volScalarField ReM(Re*muc/muMix);
81  volScalarField CdRe
82  (
83  pos(1000 - ReM)*24.0*(scalar(1) + 0.15*pow(ReM, 0.687))
84  + neg(1000 - ReM)*0.44*ReM
85  );
86 
87  volScalarField F((muc/muMix)*sqrt(1 - pair_.dispersed()));
88  F.max(1e-3);
89 
90  volScalarField Ealpha((1 + 17.67*pow(F, 0.8571428))/(18.67*F));
91 
92  volScalarField CdReEllipse(Ealpha*0.6666*sqrt(Eo)*Re);
93 
94  return
95  pos(CdReEllipse - CdRe)
96  *min(CdReEllipse, Re*sqr(1 - pair_.dispersed())*2.66667)
97  + neg(CdReEllipse - CdRe)*CdRe;
98 }
99 
100 
101 // ************************************************************************* //
dimensionedScalar sqrt(const dimensionedScalar &ds)
tmp< volScalarField > Eo() const
Eotvos number.
dimensionedScalar pow(const dimensionedScalar &ds, const dimensionedScalar &expt)
dimensionedScalar neg(const dimensionedScalar &ds)
virtual tmp< volScalarField > CdRe() const
Drag coefficient.
virtual ~IshiiZuber()
Destructor.
virtual const phaseModel & continuous() const
Continuous phase.
tmp< volScalarField > Re() const
Reynolds number.
Namespace for OpenFOAM.
dictionary dict
const double e
Elementary charge.
Definition: doubleFloat.H:78
const phasePair & pair_
Phase pair.
GeometricField< scalar, fvPatchField, volMesh > volScalarField
Definition: volFieldsFwd.H:52
dimensioned< Type > max(const dimensioned< Type > &, const dimensioned< Type > &)
Macros for easy insertion into run-time selection tables.
virtual tmp< volScalarField > mu() const =0
Return the laminar dynamic viscosity.
dimensionedScalar pos(const dimensionedScalar &ds)
dimensionedSymmTensor sqr(const dimensionedVector &dv)
IshiiZuber(const dictionary &dict, const phasePair &pair, const bool registerObject)
Construct from a dictionary and a phase pair.
dimensioned< Type > min(const dimensioned< Type > &, const dimensioned< Type > &)
const dimensionedScalar F
Faraday constant: default SI units: [C/mol].
addToRunTimeSelectionTable(ensightPart, ensightPartCells, istream)
A class for managing temporary objects.
Definition: PtrList.H:118
virtual const phaseModel & dispersed() const
Dispersed phase.
defineTypeNameAndDebug(combustionModel, 0)
scalarField Re(const UList< complex > &cf)
Definition: complexFields.C:97