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LinearSWESolver.cpp
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1 ///////////////////////////////////////////////////////////////////////////////
2 //
3 // File: LinearSWESolver.cpp
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).
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31 //
32 // Description: Linearized Shallow water Riemann solver.
33 //
34 ///////////////////////////////////////////////////////////////////////////////
35 
37 
38 namespace Nektar
39 {
41  m_pointSolve(true)
42  {
43  m_requiresRotation = true;
44 
45  }
46 
48  const int nDim,
49  const Array<OneD, const Array<OneD, NekDouble> > &Fwd,
50  const Array<OneD, const Array<OneD, NekDouble> > &Bwd,
52  {
53 
54  // extract the forward and backward trace of the depth
55  const Array<OneD, NekDouble> &dFwd = m_scalars["depthFwd"]();
56  const Array<OneD, NekDouble> &dBwd = m_scalars["depthBwd"]();
57 
58 
59  if (m_pointSolve)
60  {
61 
62  int expDim = Fwd.num_elements()-1;
63  NekDouble vf;
64 
65  if (expDim == 1)
66  {
67  for (int i = 0; i < Fwd[0].num_elements(); ++i)
68  {
70  Fwd [0][i], Fwd [1][i], 0.0, dFwd[i],
71  Bwd [0][i], Bwd [1][i], 0.0, dBwd[i],
72  flux[0][i], flux[1][i], vf);
73  }
74  }
75  else if (expDim == 2)
76  {
77  for (int i = 0; i < Fwd[0].num_elements(); ++i)
78  {
80  Fwd [0][i], Fwd [1][i], Fwd [2][i], dFwd[i],
81  Bwd [0][i], Bwd [1][i], Bwd [2][i], dBwd[i],
82  flux[0][i], flux[1][i], flux[2][i]);
83  }
84  }
85  else if (expDim == 3)
86  {
87  ASSERTL0(false, "No 3D Shallow water supported.");
88  }
89  }
90  else
91  {
92  v_ArraySolve(Fwd, Bwd, flux);
93  }
94  }
95 }
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:161
virtual void v_ArraySolve(const Array< OneD, const Array< OneD, NekDouble > > &Fwd, const Array< OneD, const Array< OneD, NekDouble > > &Bwd, Array< OneD, Array< OneD, NekDouble > > &flux)
std::map< std::string, RSScalarFuncType > m_scalars
Map of scalar function types.
virtual void v_PointSolve(NekDouble etaL, NekDouble uL, NekDouble vL, NekDouble dL, NekDouble etaR, NekDouble uR, NekDouble vR, NekDouble dR, NekDouble &etaf, NekDouble &uf, NekDouble &vf)
double NekDouble
virtual void v_Solve(const int nDim, const Array< OneD, const Array< OneD, NekDouble > > &Fwd, const Array< OneD, const Array< OneD, NekDouble > > &Bwd, Array< OneD, Array< OneD, NekDouble > > &flux)
bool m_requiresRotation
Indicates whether the Riemann solver requires a rotation to be applied to the velocity fields...
The RiemannSolver class provides an abstract interface under which solvers for various Riemann proble...
Definition: RiemannSolver.h:62