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rAKA/test/test_model/test_heat_transfer_model/test_heat_transfer_model_cube3d_pbc.cc
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test_heat_transfer_model_cube3d_pbc.cc
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/**
* @file test_heat_transfer_model_cube3d_pbc.cc
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Srinivasa Babu Ramisetti <srinivasa.ramisetti@epfl.ch>
* @author Rui Wang <rui.wang@epfl.ch>
*
* @date creation: Sun May 01 2011
* @date last modification: Wed Feb 03 2016
*
* @brief test of the class HeatTransferModel on the 3d cube
*
* @section LICENSE
*
* Copyright (©) 2010-2018 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu 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 3 of the License, or (at your option) any
* later version.
*
* Akantu 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 Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "heat_transfer_model.hh"
#include "mesh.hh"
/* -------------------------------------------------------------------------- */
#include <fstream>
#include <iostream>
using namespace std;
/* -------------------------------------------------------------------------- */
int main(int argc, char * argv[]) {
akantu::initialize("material.dat", argc, argv);
akantu::UInt spatial_dimension = 3;
// create mesh
akantu::Mesh mesh(spatial_dimension);
mesh.read("cube_tet4.msh");
akantu::HeatTransferModel model(mesh);
// initialize everything
model.initFull();
// initialize PBC
model.setPBC(1, 1, 1);
model.initPBC();
// assemble the lumped capacity
model.assembleCapacityLumped();
// get stable time step
akantu::Real time_step = model.getStableTimeStep() * 0.8;
cout << "time step is:" << time_step << endl;
model.setTimeStep(time_step);
// boundary conditions
const akantu::Array<akantu::Real> & nodes =
model.getFEEngine().getMesh().getNodes();
akantu::Array<bool> & boundary = model.getBlockedDOFs();
akantu::Array<akantu::Real> & temperature = model.getTemperature();
// double t1, t2;
double length;
// t1 = 300.;
// t2 = 100.;
length = 1.;
akantu::UInt nb_nodes = model.getFEEngine().getMesh().getNbNodes();
for (akantu::UInt i = 0; i < nb_nodes; ++i) {
temperature(i) = 100.;
akantu::Real dx = nodes(i, 0) - length / 4.;
akantu::Real dy = nodes(i, 1) - length / 4.;
akantu::Real dz = nodes(i, 2) - length / 4.;
akantu::Real d = sqrt(dx * dx + dy * dy + dz * dz);
if (d < 0.1) {
boundary(i) = true;
temperature(i) = 300.;
}
}
model.updateResidual();
model.setBaseName("heat_transfer_cube3d_pbc");
model.addDumpField("temperature");
model.addDumpField("temperature_rate");
model.addDumpField("residual");
model.addDumpField("capacity_lumped");
model.dump();
/* ------------------------------------------------------------------------ */
// //for testing
int max_steps = 1000;
/* ------------------------------------------------------------------------ */
for (int i = 0; i < max_steps; i++) {
model.explicitPred();
model.updateResidual();
model.solveExplicitLumped();
model.explicitCorr();
if (i % 100 == 0)
model.dump();
if (i % 10 == 0)
std::cout << "Step " << i << "/" << max_steps << std::endl;
}
cout << "\n\n Stable Time Step is : " << time_step << "\n \n" << endl;
return 0;
}
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