stab_helper.h

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//-----------------------------------------------------------------------bl-
//--------------------------------------------------------------------------
//
// GRINS - General Reacting Incompressible Navier-Stokes
//
// Copyright (C) 2014-2015 Paul T. Bauman, Roy H. Stogner
// Copyright (C) 2010-2013 The PECOS Development Team
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the Version 2.1 GNU Lesser General
// Public License as published by the Free Software Foundation.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc. 51 Franklin Street, Fifth Floor,
// Boston, MA  02110-1301  USA
//
//-----------------------------------------------------------------------el-

#ifndef GRINS_STAB_HELPER_H
#define GRINS_STAB_HELPER_H

// GRINS
#include "grins/parameter_user.h"

// libMesh
#include "libmesh/vector_value.h"
#include "libmesh/tensor_value.h"
#include "libmesh/fe_base.h"


namespace GRINS
{
  // GRINS forward declarations
  class AssemblyContext;

  class StabilizationHelper : public ParameterUser
  {
  public:
    StabilizationHelper( const std::string & helper_name );
    ~StabilizationHelper();

    libMesh::RealGradient compute_g( libMesh::FEBase* fe,
                                     AssemblyContext& c,
                                     unsigned int qp ) const;
    
    libMesh::RealTensor compute_G( libMesh::FEBase* fe,
                                   AssemblyContext& c,
                                   unsigned int qp ) const;

  };

} // namespace GRINS
#endif // GRINS_STAB_HELPER_H