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UnsteadyDiffusion.h
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1 ///////////////////////////////////////////////////////////////////////////////
2 //
3 // File UnsteadyDiffusion.h
4 //
5 // For more information, please see: http://www.nektar.info
6 //
7 // The MIT License
8 //
9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
10 // Department of Aeronautics, Imperial College London (UK), and Scientific
11 // Computing and Imaging Institute, University of Utah (USA).
12 //
13 // License for the specific language governing rights and limitations under
14 // Permission is hereby granted, free of charge, to any person obtaining a
15 // copy of this software and associated documentation files (the "Software"),
16 // to deal in the Software without restriction, including without limitation
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21 // The above copyright notice and this permission notice shall be included
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24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
25 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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31 //
32 // Description: Unsteady diffusion solve routines
33 //
34 ///////////////////////////////////////////////////////////////////////////////
35 
36 #ifndef NEKTAR_SOLVERS_ADRSOLVER_EQUATIONSYSTEMS_UNSTEADYDIFFUSION_H
37 #define NEKTAR_SOLVERS_ADRSOLVER_EQUATIONSYSTEMS_UNSTEADYDIFFUSION_H
38 
41 
42 using namespace Nektar::SolverUtils;
43 
44 namespace Nektar
45 {
47  {
48  public:
50 
51  /// Creates an instance of this class
52  static EquationSystemSharedPtr create(
53  const LibUtilities::SessionReaderSharedPtr& pSession) {
55  p->InitObject();
56  return p;
57  }
58  /// Name of class
59  static std::string className;
60 
61  /// Destructor
62  virtual ~UnsteadyDiffusion();
63 
64  protected:
66  NekDouble m_sVVCutoffRatio; // cut off ratio from which to start decayhing modes
67  NekDouble m_sVVDiffCoeff; // Diffusion coefficient of SVV modes
70 
71  virtual void v_GenerateSummary(SummaryList &s);
72 
74  const LibUtilities::SessionReaderSharedPtr& pSession);
75 
76  virtual void v_InitObject();
77 
78  void GetFluxVector(
79  const int i,
80  const int j,
81  const Array<OneD, Array<OneD, NekDouble> > &physfield,
82  Array<OneD, Array<OneD, NekDouble> > &derivatives,
83  Array<OneD, Array<OneD, NekDouble> > &flux);
84  void DoOdeRhs(
85  const Array<OneD, const Array<OneD, NekDouble> >&inarray,
86  Array<OneD, Array<OneD, NekDouble> >&outarray,
87  const NekDouble time);
88  void DoOdeProjection(
89  const Array<OneD, const Array<OneD, NekDouble> > &inarray,
90  Array<OneD, Array<OneD, NekDouble> > &outarray,
91  const NekDouble time);
92  virtual void DoImplicitSolve(
93  const Array<OneD, const Array<OneD, NekDouble> >&inarray,
94  Array<OneD, Array<OneD, NekDouble> >&outarray,
95  NekDouble time,
96  NekDouble lambda);
97 
98  private:
102  };
103 }
104 
105 #endif