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test_heat_transfer_model_cube3d_istropic_conductivity.cc
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Mon, Sep 23, 06:55
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rAKA akantu
test_heat_transfer_model_cube3d_istropic_conductivity.cc
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/**
* @file test_heat_transfer_model_cube3d_istropic_conductivity.cc
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Rui Wang <rui.wang@epfl.ch>
*
* @date creation: Sun May 01 2011
* @date last modification: Sun Oct 19 2014
*
* @brief test of the class HeatTransferModel on the 3d cube
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014, 2015 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 "mesh.hh"
#include "mesh_io.hh"
#include "mesh_io_msh.hh"
#include "heat_transfer_model.hh"
#include <iostream>
#include <fstream>
#include <string.h>
using
namespace
std
;
/* -------------------------------------------------------------------------- */
akantu
::
UInt
spatial_dimension
=
3
;
/* -------------------------------------------------------------------------- */
int
main
(
int
argc
,
char
*
argv
[])
{
akantu
::
initialize
(
"material.dat"
,
argc
,
argv
);
akantu
::
Mesh
mesh
(
spatial_dimension
);
akantu
::
MeshIOMSH
mesh_io
;
mesh_io
.
read
(
"cube1.msh"
,
mesh
);
akantu
::
HeatTransferModel
model
(
mesh
);
//initialize everything
model
.
initFull
();
//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
();
akantu
::
Real
eps
=
1e-15
;
double
length
=
1.
;
akantu
::
UInt
nb_nodes
=
model
.
getFEEngine
().
getMesh
().
getNbNodes
();
for
(
akantu
::
UInt
i
=
0
;
i
<
nb_nodes
;
++
i
)
{
//temperature(i) = t1 - (t1 - t2) * sin(nodes(i, 0) * M_PI / length);
temperature
(
i
)
=
100.
;
if
(
nodes
(
i
,
0
)
<
eps
)
{
boundary
(
i
)
=
true
;
temperature
(
i
)
=
300.
;
}
//set the second boundary condition
if
(
std
::
abs
(
nodes
(
i
,
0
)
-
length
)
<
eps
)
{
boundary
(
i
)
=
true
;
temperature
(
i
)
=
300.
;
}
// //to insert a heat source
// if(std::abs(nodes(i,0) - length/2.) < 0.025 && std::abs(nodes(i,1) - length/2.) < 0.025 && std::abs(nodes(i,2) - length/2.) < 0.025) {
// boundary(i) = true;
// temperature(i) = 300.;
// }
}
model
.
updateResidual
();
model
.
setBaseName
(
"heat_transfer_cube3d_istropic_conductivity"
);
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
.
explicitCorr
();
if
(
i
%
100
==
0
)
model
.
dump
();
if
(
i
%
10000
==
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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