Nektar++
UnsteadyAdvectionDiffusion.h
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3 // File UnsteadyAdvectionDiffusion.h
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9 // Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
10 // Department of Aeronautics, Imperial College London (UK), and Scientific
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31 //
32 // Description: Unsteady advection-diffusion solve routines
33 //
34 ///////////////////////////////////////////////////////////////////////////////
35 
36 #ifndef NEKTAR_SOLVERS_ADRSOLVER_EQUATIONSYSTEMS_UNSTEADYADVECTIONDIFFUSION_H
37 #define NEKTAR_SOLVERS_ADRSOLVER_EQUATIONSYSTEMS_UNSTEADYADVECTIONDIFFUSION_H
38 
43 
44 namespace Nektar
45 {
47  {
48  public:
50 
51  /// Creates an instance of this class
53  const LibUtilities::SessionReaderSharedPtr& pSession) {
56  AllocateSharedPtr(pSession);
57  p->InitObject();
58  return p;
59  }
60  /// Name of class
61  static std::string className;
62 
63  /// Destructor
65 
66  protected:
68  NekDouble m_sVVCutoffRatio; // cut off ratio from which to start decayhing modes
69  NekDouble m_sVVDiffCoeff; // Diffusion coefficient of SVV modes
74 
75  // Plane (used only for Discontinous projection
76  // with 3DHomogenoeus1D expansion)
78 
79  /// Session reader
81  const LibUtilities::SessionReaderSharedPtr& pSession);
82 
83  /// Evaluate the flux at each solution point for the advection part
84  void GetFluxVectorAdv(
85  const Array<OneD, Array<OneD, NekDouble> > &physfield,
87 
88  /// Evaluate the flux at each solution point for the diffusion part
89  void GetFluxVectorDiff(
90  const int i,
91  const int j,
92  const Array<OneD, Array<OneD, NekDouble> > &physfield,
93  Array<OneD, Array<OneD, NekDouble> > &derivatives,
95 
96  /// Compute the RHS
97  virtual void DoOdeRhs(
98  const Array<OneD, const Array<OneD, NekDouble> >&inarray,
99  Array<OneD, Array<OneD, NekDouble> >&outarray,
100  const NekDouble time);
101 
102  /// Perform the projection
103  void DoOdeProjection(
104  const Array<OneD, const Array<OneD, NekDouble> > &inarray,
105  Array<OneD, Array<OneD, NekDouble> > &outarray,
106  const NekDouble time);
107 
108  /// Solve implicitly the diffusion term
109  virtual void DoImplicitSolve(
110  const Array<OneD, const Array<OneD, NekDouble> >&inarray,
111  Array<OneD, Array<OneD, NekDouble> >&outarray,
112  NekDouble time,
113  NekDouble lambda);
114 
115  /// Get the normal velocity
117 
118  /// Initialise the object
119  virtual void v_InitObject();
120 
121  /// Print Summary
123 
124  private:
127  };
128 }
129 
130 #endif
void GetFluxVectorAdv(const Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, Array< OneD, NekDouble > > > &flux)
Evaluate the flux at each solution point for the advection part.
static boost::shared_ptr< DataType > AllocateSharedPtr()
Allocate a shared pointer from the memory pool.
General purpose memory allocation routines with the ability to allocate from thread specific memory p...
std::vector< std::pair< std::string, std::string > > SummaryList
Definition: Misc.h:47
Array< OneD, Array< OneD, NekDouble > > m_velocity
boost::shared_ptr< RiemannSolver > RiemannSolverSharedPtr
A shared pointer to an EquationSystem object.
boost::shared_ptr< SessionReader > SessionReaderSharedPtr
Definition: MeshPartition.h:50
boost::shared_ptr< EquationSystem > EquationSystemSharedPtr
A shared pointer to an EquationSystem object.
Array< OneD, NekDouble > & GetNormalVelocity()
Get the normal velocity.
SolverUtils::RiemannSolverSharedPtr m_riemannSolver
void DoOdeProjection(const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
Perform the projection.
virtual void DoOdeRhs(const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
Compute the RHS.
virtual void v_GenerateSummary(SolverUtils::SummaryList &s)
Print Summary.
boost::shared_ptr< Diffusion > DiffusionSharedPtr
A shared pointer to an EquationSystem object.
Definition: Diffusion.h:164
SolverUtils::DiffusionSharedPtr m_diffusion
double NekDouble
static std::string className
Name of class.
UnsteadyAdvectionDiffusion(const LibUtilities::SessionReaderSharedPtr &pSession)
Session reader.
virtual void DoImplicitSolve(const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, NekDouble time, NekDouble lambda)
Solve implicitly the diffusion term.
static SolverUtils::EquationSystemSharedPtr create(const LibUtilities::SessionReaderSharedPtr &pSession)
Creates an instance of this class.
void GetFluxVectorDiff(const int i, const int j, const Array< OneD, Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &derivatives, Array< OneD, Array< OneD, NekDouble > > &flux)
Evaluate the flux at each solution point for the diffusion part.
A base class for PDEs which include an advection component.
virtual void v_InitObject()
Initialise the object.