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HomogeneousRSScalar.hpp
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1 ///////////////////////////////////////////////////////////////////////////////
2 //
3 // File: Advection3DHomogeneous1D.h
4 //
5 // For more information, please see: http://www.nektar.info
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7 // The MIT License
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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
11 // Computing and Imaging Institute, University of Utah (USA).
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31 //
32 // Description: Wrapper for Riemann solver scalar.
33 //
34 ///////////////////////////////////////////////////////////////////////////////
35 
38 
39 namespace Nektar
40 {
41  namespace SolverUtils
42  {
43  /**
44  * @brief Wrapper class for Riemann solver scalars.
45  */
47  {
48  public:
50  int nPlanes)
51  : m_func (func),
52  m_planeNumber(0),
53  m_numPlanes (nPlanes),
54  m_tmp ()
55  {
56  }
57 
59  {
60  if (m_planeNumber == 0)
61  {
62  m_tmp = m_func();
63  }
64 
65  const int nPts = m_tmp.num_elements() / m_numPlanes;
66  const int offset = m_planeNumber * nPts;
67 
68  m_tmp2 = Array<OneD, NekDouble>(nPts, m_tmp + offset);
69  m_planeNumber = (m_planeNumber + 1) % m_numPlanes;
70 
71  return m_tmp2;
72  }
73 
74  private:
80  };
81 
82  /**
83  * @brief Wrapper class for Riemann solver scalars.
84  */
86  {
87  public:
89  int nPlanes,
90  std::string desc = "")
91  : m_func (func),
92  m_planeNumber(0),
93  m_numPlanes (nPlanes),
94  m_tmp (),
95  m_desc (desc)
96  {
97  }
98 
100  {
101  if (m_planeNumber == 0)
102  {
103  m_tmp = m_func();
104  }
105 
106  const int nDim = m_tmp.num_elements();
107  const int nPts = m_tmp[0].num_elements() / m_numPlanes;
108  const int offset = m_planeNumber * nPts;
110 
111  for (int i = 0; i < m_tmp.num_elements(); ++i)
112  {
113  m_tmp2[i] = Array<OneD, NekDouble>(nPts, m_tmp[i] + offset);
114  }
115 
117 
118  return m_tmp2;
119  }
120 
121  private:
127  std::string m_desc;
128  };
129  }
130 }
Array< OneD, Array< OneD, NekDouble > > m_tmp2
boost::function< const Array< OneD, const NekDouble > &()> RSScalarFuncType
Definition: RiemannSolver.h:56
Wrapper class for Riemann solver scalars.
const Array< OneD, const NekDouble > & Exec()
Array< OneD, Array< OneD, NekDouble > > m_tmp
boost::function< const Array< OneD, const Array< OneD, NekDouble > > &()> RSVecFuncType
Definition: RiemannSolver.h:58
HomoRSVector(RSVecFuncType func, int nPlanes, std::string desc="")
Array< OneD, const NekDouble > m_tmp
HomoRSScalar(RSScalarFuncType func, int nPlanes)
const Array< OneD, const Array< OneD, NekDouble > > & Exec()
Wrapper class for Riemann solver scalars.
Array< OneD, const NekDouble > m_tmp2