ProblemInstat.h 4.93 KB
Newer Older
1
2
3
4
// ============================================================================
// ==                                                                        ==
// == AMDiS - Adaptive multidimensional simulations                          ==
// ==                                                                        ==
5
// ==  http://www.amdis-fem.org                                              ==
6
7
// ==                                                                        ==
// ============================================================================
8
9
10
11
12
13
14
15
16
17
18
19
//
// 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.


20
21
22

/** \file ProblemInstat.h */

23
24
#ifndef AMDIS_PROBLEM_INSTAT_H
#define AMDIS_PROBLEM_INSTAT_H
25

26
#include "ProblemStat.h"
27
28
29
30
31
32
33
34
35
#include "ProblemTimeInterface.h"
#include "AdaptInstationary.h"

namespace AMDiS {

  /**
   * \ingroup Problem
   *
   * \brief
36
   * Base class for \ref ProblemInstat.
37
   */
38
39
  class ProblemInstatBase : public ProblemTimeInterface,
			    public ProblemStatBase
40
41
  {
  public:
42
    /// Constructor.
43
44
    ProblemInstatBase(std::string probName,
		      ProblemStatBase *initialProb)
45
      : name(probName),
46
	initialProblem(initialProb ? initialProb : this)
47
    {}
48

49
    /// Destructor.
50
    virtual ~ProblemInstatBase() {}
51

52
    /// Initialisation of the problem.
53
54
    virtual void initialize(Flag initFlag,
			    ProblemInstat *adoptProblem = NULL,
55
56
			    Flag adoptFlag = INIT_NOTHING)
    {}
57

58
59
60
61
62
63
64
    virtual void setTime(AdaptInfo* adaptInfo) 
    {
      cTime = adaptInfo->getTime();
      tau = adaptInfo->getTimestep();
      invTau = 1.0 / tau;
    }

65
66
    virtual void solve(AdaptInfo* adaptInfo) {}

67
68
    virtual void solve(AdaptInfo *adaptInfo, bool fixedMatrix) 
    {
69
70
      solve(adaptInfo);
    }
71

72
    virtual void estimate(AdaptInfo *adaptInfo) {}
73

74
    virtual void buildBeforeRefine(AdaptInfo *adaptInfo, Flag) {}
75

76
    virtual void buildBeforeCoarsen(AdaptInfo *adaptInfo, Flag) {}
77

78
    virtual void buildAfterCoarsen(AdaptInfo *adaptInfo, Flag, bool, bool) {}
79

80
81
    virtual Flag markElements(AdaptInfo *adaptInfo) 
    { 
Thomas Witkowski's avatar
Thomas Witkowski committed
82
      return 0; 
83
    }
84

85
86
    virtual Flag refineMesh(AdaptInfo *adaptInfo) 
    { 
Thomas Witkowski's avatar
Thomas Witkowski committed
87
      return 0; 
88
    }
89

90
91
    virtual Flag coarsenMesh(AdaptInfo *adaptInfo) 
    { 
Thomas Witkowski's avatar
Thomas Witkowski committed
92
      return 0; 
93
    }
94

95
    /// Implementation of ProblemTimeInterface::closeTimestep().
96
    virtual void closeTimestep() {}
97

98
    /// Returns \ref name.
Thomas Witkowski's avatar
Thomas Witkowski committed
99
    inline std::string getName() 
100
    { 
Thomas Witkowski's avatar
Thomas Witkowski committed
101
      return name; 
102
    }
103

104
    /// Used by \ref problemInitial
105
106
    virtual void solveInitialProblem(AdaptInfo *adaptInfo);  

107
108
109
110
111
112
113
114
115
116
117
118
119
120
    double* getTime()
    {
      return &cTime;
    }

    double* getTau()
    {
      return τ
    }

    double* getInvTau()
    {
      return &invTau;
    }
Thomas Witkowski's avatar
Thomas Witkowski committed
121

122
  protected:
123
    /// Name of the problem.
124
    std::string name;
125
126

    ProblemStatBase *initialProblem;
127
128
129
130
131
132
133
134
135

    /// Time
    double cTime;

    /// Timestep
    double tau;

    /// 1 / timestep
    double invTau;
136
137
138
139
140
141
142
  };


  /**
   * \ingroup Problem
   *
   * \brief
143
144
   * Standard implementation of ProblemTimeInterface for a time
   * dependent problems.
145
   */
146
  class ProblemInstat : public ProblemInstatBase
147
148
  {
  public:
149
    /// Constructs a ProblemInstatVec with prob as its stationary problem.
150
    ProblemInstat(std::string name, 
151
		  ProblemStatSeq *prob,
152
		  ProblemStatBase *initialProb = NULL);
153

154
    ProblemInstat(std::string name, ProblemStatSeq &prob);
155

156
    ProblemInstat(std::string name, ProblemStatSeq &prob, ProblemStatBase &initialProb);
157

158
    /// Destructor.
159
    virtual ~ProblemInstat();
160

161
    /// Initialisation of the problem.
162
163
164
    void initialize(Flag initFlag,
		    ProblemInstat *adoptProblem = NULL,
		    Flag adoptFlag = INIT_NOTHING);
165

166
    /// Used in \ref initialize().
167
    void createUhOld();
168

169
    /// Implementation of ProblemTimeInterface::initTimestep().
170
    void initTimestep(AdaptInfo *adaptInfo);
171

172
    /// Implementation of ProblemTimeInterface::closeTimestep().
173
    void closeTimestep(AdaptInfo *adaptInfo);
174
  
175
    /// Returns \ref problemStat.
176
    inline ProblemStatSeq* getStatProblem() 
177
    {
178
      return problemStat; 
Thomas Witkowski's avatar
Thomas Witkowski committed
179
    }
180

181
182
183
    /// Returns \ref oldSolution.
    inline SystemVector *getOldSolution() 
    { 
184
      return oldSolution; 
Thomas Witkowski's avatar
Thomas Witkowski committed
185
    }
186

187
188
189
190
191
    inline DOFVector<double> *getOldSolution(int i)
    {
      return oldSolution->getDOFVector(i);
    }

192
    /// Used by \ref problemInitial
193
    void transferInitialSolution(AdaptInfo *adaptInfo);  
194

195
    void serialize(std::ostream &out) {}
Thomas Witkowski's avatar
Thomas Witkowski committed
196

197
    void deserialize(std::istream &in) {}
198
199

  protected:
200
    /// Space problem solved in each timestep.
201
    ProblemStatSeq* problemStat;
202

203
    /// Solution of the last timestep.
204
    SystemVector *oldSolution;
205
206
207
208
209
210

    /// In parallel computations, we want to print the overall computational time
    /// that is used for one timestep.
#ifdef HAVE_PARALLEL_DOMAIN_AMDIS
    double lastTimepoint;
#endif
211
212
213
214
215
  };

}

#endif