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UnsteadyAdvectionDiffusion.h
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1 ///////////////////////////////////////////////////////////////////////////////
2 //
3 // File UnsteadyAdvectionDiffusion.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
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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:
69  NekDouble m_sVVCutoffRatio; // cut off ratio from which to start decayhing modes
70  NekDouble m_sVVDiffCoeff; // Diffusion coefficient of SVV modes
75 
76  // Plane (used only for Discontinous projection
77  // with 3DHomogenoeus1D expansion)
79 
80  /// Session reader
82  const LibUtilities::SessionReaderSharedPtr& pSession);
83 
84  /// Evaluate the flux at each solution point for the advection part
85  void GetFluxVectorAdv(
86  const Array<OneD, Array<OneD, NekDouble> > &physfield,
88 
89  /// Evaluate the flux at each solution point for the diffusion part
90  void GetFluxVectorDiff(
91  const int i,
92  const int j,
93  const Array<OneD, Array<OneD, NekDouble> > &physfield,
94  Array<OneD, Array<OneD, NekDouble> > &derivatives,
96 
97  /// Compute the RHS
98  virtual void DoOdeRhs(
99  const Array<OneD, const Array<OneD, NekDouble> >&inarray,
100  Array<OneD, Array<OneD, NekDouble> >&outarray,
101  const NekDouble time);
102 
103  /// Perform the projection
104  void DoOdeProjection(
105  const Array<OneD, const Array<OneD, NekDouble> > &inarray,
106  Array<OneD, Array<OneD, NekDouble> > &outarray,
107  const NekDouble time);
108 
109  /// Solve implicitly the diffusion term
110  virtual void DoImplicitSolve(
111  const Array<OneD, const Array<OneD, NekDouble> >&inarray,
112  Array<OneD, Array<OneD, NekDouble> >&outarray,
113  NekDouble time,
114  NekDouble lambda);
115 
116  /// Get the normal velocity based on m_velocity
118 
119  /// Get the normal velocity based on input velfield
121  const Array<OneD, const Array<OneD, NekDouble> > &velfield);
122 
123  /// Initialise the object
124  virtual void v_InitObject();
125 
126  /// Print Summary
128 
129  /// PreIntegration step for substepping.
130  virtual bool v_PreIntegrate(int step);
131 
132  // SubsStepping methods -> Probably could be set up in separate class
134  int nstep, NekDouble time);
136  void SetUpSubSteppingTimeIntegration(int intMethod,
137  const LibUtilities::TimeIntegrationWrapperSharedPtr &IntegrationScheme);
138 
139  void SubStepAdvection(const Array<OneD, const Array<OneD, NekDouble> > &inarray,
140  Array<OneD, Array<OneD, NekDouble> > &outarray,
141  const NekDouble time);
142 
143  void SubStepProjection(const Array<OneD, const Array<OneD, NekDouble> > &inarray,
144  Array<OneD, Array<OneD, NekDouble> > &outarray,
145  const NekDouble time);
146 
147  void AddAdvectionPenaltyFlux(const Array<OneD, const Array<OneD, NekDouble> > &velfield,
148  const Array<OneD, const Array<OneD, NekDouble> > &physfield,
149  Array<OneD, Array<OneD, NekDouble> > &Outarray);
150 
151 
153 
156 
158 
162 
163  private:
166  };
167 }
168 
169 #endif
void SubStepProjection(const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
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.
Array< OneD, NekDouble > GetMaxStdVelocity(const Array< OneD, Array< OneD, NekDouble > > inarray)
static boost::shared_ptr< DataType > AllocateSharedPtr()
Allocate a shared pointer from the memory pool.
LibUtilities::TimeIntegrationWrapperSharedPtr m_subStepIntegrationScheme
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< TimeIntegrationWrapper > TimeIntegrationWrapperSharedPtr
boost::shared_ptr< RiemannSolver > RiemannSolverSharedPtr
A shared pointer to an EquationSystem object.
boost::shared_ptr< SessionReader > SessionReaderSharedPtr
Definition: MeshPartition.h:51
void SubStepAdvection(const Array< OneD, const Array< OneD, NekDouble > > &inarray, Array< OneD, Array< OneD, NekDouble > > &outarray, const NekDouble time)
Array< OneD, NekDouble > & GetNormalVel(const Array< OneD, const Array< OneD, NekDouble > > &velfield)
Get the normal velocity based on input velfield.
boost::shared_ptr< EquationSystem > EquationSystemSharedPtr
A shared pointer to an EquationSystem object.
Array< OneD, NekDouble > & GetNormalVelocity()
Get the normal velocity based on m_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 bool v_PreIntegrate(int step)
PreIntegration step for substepping.
virtual void v_GenerateSummary(SolverUtils::SummaryList &s)
Print Summary.
void SetUpSubSteppingTimeIntegration(int intMethod, const LibUtilities::TimeIntegrationWrapperSharedPtr &IntegrationScheme)
boost::shared_ptr< Diffusion > DiffusionSharedPtr
A shared pointer to an EquationSystem object.
Definition: Diffusion.h:162
SolverUtils::DiffusionSharedPtr m_diffusion
double NekDouble
static std::string className
Name of class.
void SubStepAdvance(const LibUtilities::TimeIntegrationSolutionSharedPtr &integrationSoln, int nstep, NekDouble time)
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.
LibUtilities::TimeIntegrationSchemeOperators m_subStepIntegrationOps
void AddAdvectionPenaltyFlux(const Array< OneD, const Array< OneD, NekDouble > > &velfield, const Array< OneD, const Array< OneD, NekDouble > > &physfield, Array< OneD, Array< OneD, NekDouble > > &Outarray)
boost::shared_ptr< TimeIntegrationSolution > TimeIntegrationSolutionSharedPtr
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.