FreeFOAM The Cross-Platform CFD Toolkit
harmonic.H
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23 
24 Class
25  Foam::harmonic
26 
27 Description
28  Harmonic-mean differencing scheme class.
29 
30  This scheme interpolates 1/field using a scheme specified at run-time
31  and return the reciprocal of the interpolate.
32 
33 SourceFiles
34  harmonic.C
35 
36 \*---------------------------------------------------------------------------*/
37 
38 #ifndef harmonic_H
39 #define harmonic_H
40 
42 #include <finiteVolume/volFields.H>
45 
46 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
47 
48 namespace Foam
49 {
50 
51 /*---------------------------------------------------------------------------*\
52  Class harmonic Declaration
53 \*---------------------------------------------------------------------------*/
54 
55 class harmonic
56 :
57  public surfaceInterpolationScheme<scalar>
58 {
59  // Private Member Functions
60 
61  //- Disallow default bitwise assignment
62  void operator=(const harmonic&);
63 
64 
65 public:
66 
67  //- Runtime type information
68  TypeName("harmonic");
69 
70 
71  // Constructors
72 
73  //- Construct from mesh
75  :
76  surfaceInterpolationScheme<scalar>(mesh)
77  {}
78 
79  //- Construct from Istream.
80  // The name of the flux field is read from the Istream and looked-up
81  // from the mesh objectRegistry
82  harmonic
83  (
84  const fvMesh& mesh,
85  Istream& is
86  )
87  :
89  {}
90 
91  //- Construct from faceFlux and Istream
92  harmonic
93  (
94  const fvMesh& mesh,
95  const surfaceScalarField& faceFlux,
96  Istream& is
97  )
98  :
100  {}
101 
102 
103  // Member Functions
104 
105  //- Return the interpolation weighting factors
107  (
109  ) const
110  {
112  (
113  "harmonic::weights"
114  "(const GeometricField<scalar, fvPatchField, volMesh>&)"
115  );
116 
117  return tmp<surfaceScalarField>(NULL);
118  }
119 
120  //- Return the face-interpolate of the given cell field
123  (
125  ) const
126  {
127  return 1.0/(reverseLinear<scalar>(vf.mesh()).interpolate(1.0/vf));
128  }
129 };
130 
131 
132 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
133 
134 } // End namespace Foam
135 
136 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
137 
138 #endif
139 
140 // ************************ vim: set sw=4 sts=4 et: ************************ //