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cellLimitedGrad.H
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23 
24 Class
25  Foam::fv::cellLimitedGrad
26 
27 Description
28  cellLimitedGrad gradient scheme applied to a runTime selected base gradient
29  scheme.
30 
31  The scalar limiter based on limiting the extrapolated face values
32  between the maximum and minimum cell and cell neighbour values and is
33  applied to all components of the gradient.
34 
35 SourceFiles
36  cellLimitedGrad.C
37 
38 \*---------------------------------------------------------------------------*/
39 
40 #ifndef cellLimitedGrad_H
41 #define cellLimitedGrad_H
42 
43 #include "gradScheme.H"
44 #include "Field.H"
45 
46 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
47 
48 namespace Foam
49 {
50 
51 namespace fv
52 {
53 
54 /*---------------------------------------------------------------------------*\
55  Class cellLimitedGrad Declaration
56 \*---------------------------------------------------------------------------*/
57 
58 template<class Type, class Limiter>
59 class cellLimitedGrad
60 :
61  public fv::gradScheme<Type>,
62  public Limiter
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  void limitGradient
75  (
76  const Field<scalar>& limiter,
77  Field<vector>& gIf
78  ) const;
79 
80  void limitGradient
81  (
82  const Field<vector>& limiter,
83  Field<tensor>& gIf
84  ) const;
85 
86 
87 public:
88 
89  //- RunTime type information
90  TypeName("cellLimited");
91 
92 
93  // Constructors
94 
95  //- Construct from mesh and schemeData
96  cellLimitedGrad(const fvMesh& mesh, Istream& schemeData)
97  :
98  gradScheme<Type>(mesh),
99  Limiter(schemeData),
100  basicGradScheme_(fv::gradScheme<Type>::New(mesh, schemeData)),
101  k_(readScalar(schemeData))
102  {
103  if (k_ < 0 || k_ > 1)
104  {
106  (
107  schemeData
108  ) << "coefficient = " << k_
109  << " should be >= 0 and <= 1"
110  << exit(FatalIOError);
111  }
112  }
113 
114  //- Disallow default bitwise copy construction
115  cellLimitedGrad(const cellLimitedGrad&) = delete;
116 
117 
118  // Member Functions
119 
120  inline void limitFaceCmpt
121  (
122  scalar& limiter,
123  const scalar maxDelta,
124  const scalar minDelta,
125  const scalar extrapolate
126  ) const;
127 
128  inline void limitFace
129  (
130  Type& limiter,
131  const Type& maxDelta,
132  const Type& minDelta,
133  const Type& extrapolate
134  ) const;
135 
136  //- Return the gradient of the given field to the gradScheme::grad
137  // for optional caching
138  virtual tmp
139  <
142  > calcGrad
143  (
145  const word& name
146  ) const;
147 
148 
149  // Member Operators
150 
151  //- Disallow default bitwise assignment
152  void operator=(const cellLimitedGrad&) = delete;
153 };
154 
155 
156 // * * * * * * * * * * * * Inline Member Function * * * * * * * * * * * * * //
157 
158 template<class Type, class Limiter>
160 (
161  scalar& limiter,
162  const scalar maxDelta,
163  const scalar minDelta,
164  const scalar extrapolate
165 ) const
166 {
167  scalar r = 1;
168 
169  if (extrapolate > small)
170  {
171  r = maxDelta/extrapolate;
172  }
173  else if (extrapolate < -small)
174  {
175  r = minDelta/extrapolate;
176  }
177  else
178  {
179  return;
180  }
181 
182  limiter = min(limiter, Limiter::limiter(r));
183 }
184 
185 
186 template<class Type, class Limiter>
188 (
189  Type& limiter,
190  const Type& maxDelta,
191  const Type& minDelta,
192  const Type& extrapolate
193 ) const
194 {
195  for (direction cmpt=0; cmpt<pTraits<Type>::nComponents; cmpt++)
196  {
198  (
199  setComponent(limiter, cmpt),
200  component(maxDelta, cmpt),
201  component(minDelta, cmpt),
202  component(extrapolate, cmpt)
203  );
204  }
205 }
206 
207 
208 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
209 
210 } // End namespace fv
211 
212 } // End namespace Foam
213 
214 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
215 
216 #ifdef NoRepository
217  #include "cellLimitedGrad.C"
218 #endif
219 
220 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
221 
222 #endif
223 
224 // ************************************************************************* //
TypeName("cellLimited")
RunTime type information.
void operator=(const cellLimitedGrad &)=delete
Disallow default bitwise assignment.
cellLimitedGrad(const fvMesh &mesh, Istream &schemeData)
Construct from mesh and schemeData.
virtual tmp< GeometricField< typename outerProduct< vector, Type >::type, fvPatchField, volMesh > > calcGrad(const GeometricField< Type, fvPatchField, volMesh > &vsf, const word &name) const
Return the gradient of the given field to the gradScheme::grad.
errorManipArg< error, int > exit(error &err, const int errNo=1)
Definition: errorManip.H:124
uint8_t direction
Definition: direction.H:45
An Istream is an abstract base class for all input systems (streams, files, token lists etc)...
Definition: Istream.H:57
Abstract base class with a fat-interface to all derived classes covering all possible ways in which t...
Definition: fvPatchField.H:66
typeOfRank< typename pTraits< arg1 >::cmptType, direction(pTraits< arg1 >::rank)+direction(pTraits< arg2 >::rank) >::type type
Definition: products.H:90
Generic GeometricField class.
Mesh data needed to do the Finite Volume discretisation.
Definition: volMesh.H:53
void limiter(scalarField &allLambda, const RdeltaTType &rDeltaT, const RhoType &rho, const volScalarField &psi, const surfaceScalarField &phiBD, const surfaceScalarField &phiCorr, const SpType &Sp, const SuType &Su, const PsiMaxType &psiMax, const PsiMinType &psiMin)
A class for handling words, derived from string.
Definition: word.H:59
labelList fv(nPoints)
cellLimitedGrad gradient scheme applied to a runTime selected base gradient scheme.
bool readScalar(const char *buf, doubleScalar &s)
Read whole of buf as a scalar. Return true if successful.
Definition: doubleScalar.H:75
dimensioned< Type > min(const dimensioned< Type > &, const dimensioned< Type > &)
word name(const complex &)
Return a string representation of a complex.
Definition: complex.C:47
Abstract base class for gradient schemes.
Definition: gradScheme.H:60
#define FatalIOErrorInFunction(ios)
Report an error message using Foam::FatalIOError.
Definition: error.H:331
void limitFaceCmpt(scalar &limiter, const scalar maxDelta, const scalar minDelta, const scalar extrapolate) const
Mesh data needed to do the Finite Volume discretisation.
Definition: fvMesh.H:78
static tmp< gradScheme< Type > > New(const fvMesh &mesh, Istream &schemeData)
Return a pointer to a new gradScheme created on freestore.
Definition: gradScheme.C:34
A class for managing temporary objects.
Definition: PtrList.H:53
const fvMesh & mesh() const
Return mesh reference.
Definition: gradScheme.H:122
label & setComponent(label &l, const direction)
Definition: label.H:86
void component(FieldField< Field, typename FieldField< Field, Type >::cmptType > &sf, const FieldField< Field, Type > &f, const direction d)
Namespace for OpenFOAM.
void limitFace(Type &limiter, const Type &maxDelta, const Type &minDelta, const Type &extrapolate) const
IOerror FatalIOError