/usr/include/libmesh/steady_solver.h is in libmesh-dev 0.7.1-2ubuntu1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | // $Id: steady_solver.h 4279 2011-03-21 17:01:31Z roystgnr $
// The libMesh Finite Element Library.
// Copyright (C) 2002-2008 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
// 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#ifndef __steady_solver_h__
#define __steady_solver_h__
// C++ includes
// Local includes
#include "time_solver.h"
namespace libMesh
{
// Forward Declarations
class DiffContext;
class DifferentiableSystem;
class TimeSolver;
/**
* This class implements a TimeSolver which does a single
* solve of the steady state problem.
*
* This class is part of the new DifferentiableSystem framework,
* which is still experimental. Users of this framework should
* beware of bugs and future API changes.
*
* @author Roy H. Stogner 2006
*/
// ------------------------------------------------------------
// Solver class definition
class SteadySolver : public TimeSolver
{
public:
/**
* The type of system
*/
typedef DifferentiableSystem sys_type;
/**
* The parent class
*/
typedef TimeSolver Parent;
/**
* Constructor. Requires a reference to the system
* to be solved.
*/
SteadySolver (sys_type& s) : Parent(s) {}
/**
* Destructor.
*/
virtual ~SteadySolver ();
/**
* error convergence order against deltat is
* not applicable to a steady problem.
*/
virtual Real error_order() const { return 0.; }
/**
* This method uses the DifferentiableSystem's
* element_time_derivative() and element_constraint()
* to build a full residual/jacobian on an element.
*/
virtual bool element_residual (bool request_jacobian,
DiffContext &);
/**
* This method uses the DifferentiableSystem's
* side_time_derivative() and side_constraint()
* to build a full residual/jacobian on an element's side.
*/
virtual bool side_residual (bool request_jacobian,
DiffContext &);
/**
* Nominally computes the size of the difference between
* successive solution iterates ||u^{n+1} - u^{n}|| in some norm,
* but for this class just returns 0.
*/
virtual Real du(const SystemNorm&) const { return 0; }
/**
* This is a steady-state solver.
*/
virtual bool is_steady() const { return true; }
};
} // namespace libMesh
#endif // #define __steady_solver_h__
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