FreeFOAM The Cross-Platform CFD Toolkit
faceMDLimitedGrad.H
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4  \\ / O peration |
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23 
24 Class
25  Foam::fv::faceMDLimitedGrad
26 
27 Description
28  faceMDLimitedGrad gradient scheme applied to a runTime selected
29  base gradient scheme.
30 
31  The scalar limiter based on limiting the extrapolated face values
32  between the face-neighbour cell values and is applied to the gradient
33  in each face direction separately.
34 
35 SourceFiles
36  faceMDLimitedGrad.C
37 
38 \*---------------------------------------------------------------------------*/
39 
40 #ifndef faceMDLimitedGrad_H
41 #define faceMDLimitedGrad_H
42 
44 
45 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
46 
47 namespace Foam
48 {
49 
50 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
51 
52 namespace fv
53 {
54 
55 /*---------------------------------------------------------------------------*\
56  Class faceMDLimitedGrad Declaration
57 \*---------------------------------------------------------------------------*/
58 
59 template<class Type>
61 :
62  public fv::gradScheme<Type>
63 {
64  // Private Data
65 
66  tmp<fv::gradScheme<Type> > basicGradScheme_;
67 
68  //- Limiter coefficient
69  const scalar k_;
70 
71 
72  // Private Member Functions
73 
74  inline void limitFace
75  (
76  scalar& limiter,
77  const scalar maxDelta,
78  const scalar minDelta,
79  const scalar extrapolate
80  ) const;
81 
82 
83  //- Disallow default bitwise copy construct
85 
86  //- Disallow default bitwise assignment
87  void operator=(const faceMDLimitedGrad&);
88 
89 
90 public:
91 
92  //- RunTime type information
93  TypeName("faceMDLimited");
94 
95 
96  // Constructors
97 
98  //- Construct from mesh and schemeData
99  faceMDLimitedGrad(const fvMesh& mesh, Istream& schemeData)
100  :
101  gradScheme<Type>(mesh),
102  basicGradScheme_(fv::gradScheme<Type>::New(mesh, schemeData)),
103  k_(readScalar(schemeData))
104  {
105  if (k_ < 0 || k_ > 1)
106  {
108  (
109  "faceMDLimitedGrad(const fvMesh&, Istream& schemeData)",
110  schemeData
111  ) << "coefficient = " << k_
112  << " should be >= 0 and <= 1"
113  << exit(FatalIOError);
114  }
115  }
116 
117 
118  // Member Functions
119 
120  tmp
121  <
124  > grad
125  (
127  ) const;
128 };
129 
130 
131 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
132 
133 } // End namespace fv
134 
135 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
136 
137 } // End namespace Foam
138 
139 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
140 
141 #endif
142 
143 // ************************ vim: set sw=4 sts=4 et: ************************ //