steady_solver.C

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00001 // The libMesh Finite Element Library.
00002 // Copyright (C) 2002-2012 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
00003 
00004 // This library is free software; you can redistribute it and/or
00005 // modify it under the terms of the GNU Lesser General Public
00006 // License as published by the Free Software Foundation; either
00007 // version 2.1 of the License, or (at your option) any later version.
00008 
00009 // This library is distributed in the hope that it will be useful,
00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012 // Lesser General Public License for more details.
00013 
00014 // You should have received a copy of the GNU Lesser General Public
00015 // License along with this library; if not, write to the Free Software
00016 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00017 
00018 
00019 #include "libmesh/diff_solver.h"
00020 #include "libmesh/diff_system.h"
00021 #include "libmesh/steady_solver.h"
00022 
00023 namespace libMesh
00024 {
00025 
00026 
00027 
00028 SteadySolver::~SteadySolver ()
00029 {
00030 }
00031 
00032 
00033 
00034 bool SteadySolver::element_residual(bool request_jacobian,
00035                                     DiffContext& context)
00036 {
00037   // If a fixed solution is requested, it will just be the current
00038   // solution
00039   if (_system.use_fixed_solution)
00040     {
00041       context.elem_fixed_solution = context.elem_solution;
00042       context.fixed_solution_derivative = 1.0;
00043     }
00044 
00045   bool jacobian_computed =
00046     _system.element_time_derivative(request_jacobian, context);
00047 
00048   // The user shouldn't compute a jacobian unless requested
00049   libmesh_assert(request_jacobian || !jacobian_computed);
00050 
00051   bool jacobian_computed2 =
00052     _system.element_constraint(jacobian_computed, context);
00053 
00054   // The user shouldn't compute a jacobian unless requested
00055   libmesh_assert (jacobian_computed || !jacobian_computed2);
00056 
00057   return jacobian_computed2;
00058 }
00059 
00060 
00061 
00062 bool SteadySolver::side_residual(bool request_jacobian,
00063                                  DiffContext& context)
00064 {
00065   // If a fixed solution is requested, it will just be the current
00066   // solution
00067   if (_system.use_fixed_solution)
00068     {
00069       context.elem_fixed_solution = context.elem_solution;
00070       context.fixed_solution_derivative = 1.0;
00071     }
00072 
00073   bool jacobian_computed =
00074     _system.side_time_derivative(request_jacobian, context);
00075 
00076   // The user shouldn't compute a jacobian unless requested
00077   libmesh_assert (request_jacobian || !jacobian_computed);
00078 
00079   bool jacobian_computed2 =
00080     _system.side_constraint(jacobian_computed, context);
00081 
00082   // The user shouldn't compute a jacobian unless requested
00083   libmesh_assert (jacobian_computed || !jacobian_computed2);
00084 
00085   return jacobian_computed2;
00086 }
00087 
00088 } // namespace libMesh
00089
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Last modified: February 05 2013 19:54:48 UTC

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