PetscSolverNavierStokes.h 1.69 KB
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// ============================================================================
// ==                                                                        ==
// == AMDiS - Adaptive multidimensional simulations                          ==
// ==                                                                        ==
// ==  http://www.amdis-fem.org                                              ==
// ==                                                                        ==
// ============================================================================
//
// Software License for AMDiS
//
// Copyright (c) 2010 Dresden University of Technology 
// All rights reserved.
// Authors: Simon Vey, Thomas Witkowski et al.
//
// This file is part of AMDiS
//
// See also license.opensource.txt in the distribution.



/** \file PetscSolverNavierStokes.h */

#ifndef AMDIS_PETSC_SOLVER_NAVIER_STOKES_H
#define AMDIS_PETSC_SOLVER_NAVIER_STOKES_H

#include "parallel/PetscSolverGlobalMatrix.h"

namespace AMDiS {

  using namespace std;

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  struct MatShellNavierStokesSchur {
    int solverMode;

    // === Data for mode 0 (solve the schur complement directly) === 

    Mat A00, A01, A10, A11;

    KSP kspVelocity;


    // === Data for mode 1 ===

    KSP kspMass, kspLaplace;
    
    Mat matConDif;
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    IS isVelocity, isPressure;
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  };

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  class PetscSolverNavierStokes : public PetscSolverGlobalMatrix
  {
  public:
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    PetscSolverNavierStokes(string name);
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  protected:
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    void initSolver(KSP &ksp);
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    void initPreconditioner(PC pc);
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  private:
    int pressureComponent;

    PetscSolver *massMatrixSolver, *laplaceMatrixSolver, *conDifMatrixSolver;

    MatShellNavierStokesSchur matShellContext;
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  };

}

#endif