Nektar++
ShallowWaterSolver.cpp
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1 ///////////////////////////////////////////////////////////////////////////////
2 //
3 // File ShallowWaterSolver.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: Shallow Water Equations framework solver
33 //
34 ///////////////////////////////////////////////////////////////////////////////
35 
38 
39 using namespace Nektar;
40 using namespace Nektar::SolverUtils;
41 
42 int main(int argc, char *argv[])
43 {
44  // Create session reader.
46  session = LibUtilities::SessionReader::CreateInstance(argc, argv);
47 
48  time_t starttime, endtime;
49  NekDouble CPUtime;
51 
52  // Record start time.
53  time(&starttime);
54 
55  // Create instance of module to solve the equation specified in the session.
56  try
57  {
59  session->GetSolverInfo("EQTYPE"), session);
60  }
61  catch (int e)
62  {
63  ASSERTL0(e == -1, "No such solver class defined.");
64  }
65 
66  // Print a summary of solver and problem parameters and initialise the
67  // solver.
68  equ->PrintSummary(cout);
69  equ->DoInitialise();
70 
71  // Solve the problem.
72  equ->DoSolve();
73 
74  // Record end time.
75  time(&endtime);
76  CPUtime = (1.0/60.0/60.0)*difftime(endtime,starttime);
77 
78  // Write output to .fld file
79  equ->Output();
80 
81  // Evaluate and output computation time and solution accuracy.
82  // The specific format of the error output is essential for the
83  // regression tests to work.
84  cout << "-------------------------------------------" << endl;
85  cout << "Total Computation Time = " << CPUtime << " hr." << endl;
86 
87 
88  for(int i = 0; i < equ->GetNvariables(); ++i)
89  {
90  cout << "L 2 error (variable " << equ->GetVariable(i) << "): " << equ->L2Error(i,true) << endl;
91  cout << "L inf error (variable " << equ->GetVariable(i) << "): " << equ->LinfError(i) << endl;
92  }
93 
94  session->Finalise();
95 }
#define ASSERTL0(condition, msg)
Definition: ErrorUtil.hpp:161
tBaseSharedPtr CreateInstance(tKey idKey BOOST_PP_COMMA_IF(MAX_PARAM) BOOST_PP_ENUM_BINARY_PARAMS(MAX_PARAM, tParam, x))
Create an instance of the class referred to by idKey.
Definition: NekFactory.hpp:162
int main(int argc, char *argv[])
boost::shared_ptr< SessionReader > SessionReaderSharedPtr
Definition: MeshPartition.h:50
boost::shared_ptr< EquationSystem > EquationSystemSharedPtr
A shared pointer to an EquationSystem object.
static SessionReaderSharedPtr CreateInstance(int argc, char *argv[])
Creates an instance of the SessionReader class.
double NekDouble
EquationSystemFactory & GetEquationSystemFactory()