libMesh
first_order_unsteady_solver.h
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1 // The libMesh Finite Element Library.
2 // Copyright (C) 2002-2017 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
3 
4 // This library is free software; you can redistribute it and/or
5 // modify it under the terms of the GNU Lesser General Public
6 // License as published by the Free Software Foundation; either
7 // version 2.1 of the License, or (at your option) any later version.
8 
9 // This library is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 // Lesser General Public License for more details.
13 
14 // You should have received a copy of the GNU Lesser General Public
15 // License along with this library; if not, write to the Free Software
16 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 
18 #ifndef LIBMESH_FIRST_ORDER_UNSTEADY_SOLVER_H
19 #define LIBMESH_FIRST_ORDER_UNSTEADY_SOLVER_H
20 
21 #include "libmesh/unsteady_solver.h"
22 
23 namespace libMesh
24 {
75 {
76 public:
81  explicit
83  : UnsteadySolver(s) {}
84 
89 
90  virtual unsigned int time_order() const libmesh_override
91  { return 1; }
92 
93 protected:
94 
100  void prepare_accel(DiffContext & context);
101 
109  bool compute_second_order_eqns(bool compute_jacobian, DiffContext & c);
110 
111 };
112 
113 } // end namespace libMesh
114 
115 #endif // LIBMESH_FIRST_ORDER_UNSTEADY_SOLVER_H
bool compute_second_order_eqns(bool compute_jacobian, DiffContext &c)
If there are second order variables, then we need to compute their residual equations and correspondi...
This class provides all data required for a physics package (e.g.
Definition: diff_context.h:54
void prepare_accel(DiffContext &context)
If there are second order variables in the system, then we also prepare the accel for those variables...
virtual unsigned int time_order() const libmesh_override
FirstOrderUnsteadySolver(sys_type &s)
Constructor.
The libMesh namespace provides an interface to certain functionality in the library.
This class provides a specific system class.
Definition: diff_system.h:53
Generic class from which first order UnsteadySolvers should subclass.
This is a generic class that defines a solver to handle time integration of DifferentiableSystems.