Ergun.C
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25 
26 #include "Ergun.H"
28 
29 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
30 
31 namespace Foam
32 {
33 namespace dragModels
34 {
35  defineTypeNameAndDebug(Ergun, 0);
36 
38  (
39  dragModel,
40  Ergun,
41  dictionary
42  );
43 }
44 }
45 
46 
47 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
48 
50 (
51  const dictionary& interfaceDict,
52  const phaseModel& phase1,
53  const phaseModel& phase2
54 )
55 :
56  dragModel(interfaceDict, phase1, phase2)
57 {}
58 
59 
60 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
61 
63 {}
64 
65 
66 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
67 
69 (
70  const volScalarField& Ur
71 ) const
72 {
73  volScalarField alpha2(max(phase2_, scalar(1.0e-6)));
74 
75  return
76  150.0*phase1_*phase2_.nu()*phase2_.rho()
77  /sqr(alpha2*phase1_.d())
78  + 1.75*phase2_.rho()*Ur/(alpha2*phase1_.d());
79 }
80 
81 
82 // ************************************************************************* //
phaseModel & phase1
Definition: createFields.H:12
phaseModel & phase2
Definition: createFields.H:13
const phaseModel & phase1_
Definition: dragModel.H:57
const phaseModel & phase2_
Definition: dragModel.H:58
Namespace for OpenFOAM.
Ergun(const dictionary &interfaceDict, const phaseModel &phase1, const phaseModel &phase2)
Construct from components.
const double e
Elementary charge.
Definition: doubleFloat.H:78
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 ~Ergun()
Destructor.
tmp< volScalarField > d() const
alpha2
Definition: alphaEqn.H:112
const dimensionedScalar & rho() const
Definition: phaseModel.H:165
virtual tmp< volScalarField > K() const
Return the drag coefficient K.
dimensionedSymmTensor sqr(const dimensionedVector &dv)
addToRunTimeSelectionTable(ensightPart, ensightPartCells, istream)
A class for managing temporary objects.
Definition: PtrList.H:118
defineTypeNameAndDebug(combustionModel, 0)
const dimensionedScalar & nu() const
Return the laminar viscosity.
Definition: phaseModel.H:150