FreeFOAM The Cross-Platform CFD Toolkit
SchillerNaumann.C
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5  \\ / A nd | Copyright (C) 1991-2011 OpenCFD Ltd.
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25 
26 #include "SchillerNaumann.H"
28 
29 // * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
30 
31 namespace Foam
32 {
33  defineTypeNameAndDebug(SchillerNaumann, 0);
34 
36  (
37  dragModel,
38  SchillerNaumann,
39  dictionary
40  );
41 }
42 
43 
44 // * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
45 
47 (
48  const dictionary& interfaceDict,
49  const volScalarField& alpha,
50  const phaseModel& phasea,
51  const phaseModel& phaseb
52 )
53 :
54  dragModel(interfaceDict, alpha, phasea, phaseb)
55 {}
56 
57 
58 // * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
59 
61 {}
62 
63 
64 // * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
65 
67 (
68  const volScalarField& Ur
69 ) const
70 {
71  volScalarField Re = max(Ur*phasea_.d()/phaseb_.nu(), scalar(1.0e-3));
72 
73  volScalarField Cds =
74  neg(Re - 1000)*(24.0*(1.0 + 0.15*pow(Re, 0.687))/Re)
75  + pos(Re - 1000)*0.44;
76 
77  return 0.75*Cds*phaseb_.rho()*Ur/phasea_.d();
78 }
79 
80 
81 // ************************ vim: set sw=4 sts=4 et: ************************ //