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SteadyAdvectionDiffusion.cpp
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1 /////////////////////////////////////////////////////////////////////////////////
2 //
3 // File SteadAdvectionDiffusion.cpp
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: Steady advection-diffusion solve routines
33 //
34 ///////////////////////////////////////////////////////////////////////////////
36 
37 namespace Nektar
38 {
40 
41  /**
42  * @class SteadyAdvectionDiffusion
43  * This is a solver class for solving the problems.
44  * - SteadyAdvectionDiffusion:
45  * \f$ c \cdot \nabla u -\nabla \cdot (\nabla u) = f(x)\f$
46  */
47 
50  : EquationSystem(pSession),
51  m_lambda(0.0)
52  {
53  }
54 
56  {
58 
59  // Define Velocity fields
60  m_velocity = Array<OneD, Array<OneD, NekDouble> >(m_spacedim);
62  }
63 
65  {
66 
67  }
68 
70  {
72  }
73 
74 
76  {
77  // set initial forcing from session file
78  EvaluateFunction(m_session->GetVariables(), m_fields, "Forcing");
79  }
80 
82  {
83  for(int i = 0; i < m_fields.num_elements(); ++i)
84  {
85  m_fields[i]->LinearAdvectionDiffusionReactionSolve(m_velocity,
86  m_fields[i]->GetPhys(),
87  m_fields[i]->UpdateCoeffs(),
88  m_lambda);
89  m_fields[i]->SetPhysState(false);
90  }
91  }
92 
93 }