LaplacianProblem.cpp

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/*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   This file is part of CEPS.
 
   CEPS is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
 
   CEPS 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 General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with CEPS (see file LICENSE at root of project).
   If not, see <https://www.gnu.org/licenses/>.
 
 
   Copyright 2019-2024 Inria, Universite de Bordeaux
 
   Authors, in alphabetical order:
 
     Pierre-Elliott BECUE, Florian CARO, Yves COUDIERE(*), Andjela DAVIDOVIC, 
     Charlie DOUANLA-LONTSI, Marc FUENTES, Mehdi JUHOOR, Michael LEGUEBE(*), 
     Pauline MIGERDITICHAN, Valentin PANNETIER(*), Nejib ZEMZEMI.
     * : currently active authors
 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
#include "pde/problem/static/LaplacianProblem.hpp"
#include "pde/solver/static/LaplacianSolver.hpp"
 
LaplacianProblem::LaplacianProblem(Geometry* g, InputParameters* p, const CepsMathTensor& k) 
: AbstractStaticPdeProblem (g,p), m_k(k)
{
  setProblemName("Laplacian");
  
  if (m_parameters)
    LaplacianProblem::setupWithParameters(m_parameters);
}
 
LaplacianProblem::~LaplacianProblem()
{
}
 
void
LaplacianProblem::setupWithParameters(InputParameters* p)
{
  CepsVector<CepsString> words = ceps::split(m_parameters->getString("stiffness tensor",""));
  if (not words.empty())
    m_k = ceps::toMathTensor(words);
  return;
}
 
void
LaplacianProblem::defineUnknowns()
{
  // A single spatial unknown defined everywhere
  addUnknown("u");
}
 
CepsMathTensor
LaplacianProblem::getDiffusionTensor(Unknown* u) const
{
  return m_k;
}
 
void
LaplacianProblem::run()
{
 
  if (ceps::isProfiling())
    getProfiler()->start("whole","solving the PDE");
 
  initializeEquation();
 
  CEPS_SEPARATOR;
  LaplacianSolver solver(this);
  
  solver.solve(); 
 
  if (hasAnalyticSolution())
    m_errors = solver.getErrors();
 
  if (ceps::isProfiling())
    getProfiler()->stop("whole");  
 
}