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test_heat_transfer_model_cube3d.cc
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rAKA akantu
test_heat_transfer_model_cube3d.cc
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/**
* @file test_heat_transfer_model_cube3d.cc
*
* @author Rui Wang <rui.wang@epfl.ch>
* @author Srinivasa Babu Ramisetti <srinivasa.ramisetti@epfl.ch>
*
* @date Sun May 01 19:14:43 2011
*
* @brief test of the class HeatTransferModel on the 3d cube
*
* @section LICENSE
*
* Copyright (©) 2010-2011 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 <iostream>
#include <fstream>
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "mesh.hh"
#include "mesh_io.hh"
#include "mesh_io_msh.hh"
#include "heat_transfer_model.hh"
/* -------------------------------------------------------------------------- */
using
namespace
akantu
;
UInt
spatial_dimension
=
3
;
ElementType
type
=
_tetrahedron_4
;
/* -------------------------------------------------------------------------- */
int
main
(
int
argc
,
char
*
argv
[])
{
initialize
(
"material.dat"
,
argc
,
argv
);
Mesh
mesh
(
spatial_dimension
);
MeshIOMSH
mesh_io
;
mesh_io
.
read
(
"cube1.msh"
,
mesh
);
HeatTransferModel
model
(
mesh
);
//initialize everything
model
.
initFull
();
//assemble the lumped capacity
model
.
assembleCapacityLumped
();
//get and set stable time step
Real
time_step
=
model
.
getStableTimeStep
()
*
0.8
;
std
::
cout
<<
"time step is:"
<<
time_step
<<
std
::
endl
;
model
.
setTimeStep
(
time_step
);
/// boundary conditions
const
Array
<
Real
>
&
nodes
=
mesh
.
getNodes
();
Array
<
bool
>
&
boundary
=
model
.
getBlockedDOFs
();
Array
<
Real
>
&
temperature
=
model
.
getTemperature
();
UInt
nb_nodes
=
mesh
.
getNbNodes
();
//double t1, t2;
double
length
;
// t1 = 300.;
// t2 = 100.;
length
=
1.
;
for
(
UInt
i
=
0
;
i
<
nb_nodes
;
++
i
)
{
//temperature(i) = t1 - (t1 - t2) * sin(nodes(i, 0) * M_PI / length);
temperature
(
i
)
=
100.
;
//to insert a heat source
Real
dx
=
nodes
(
i
,
0
)
-
length
/
2.
;
Real
dy
=
nodes
(
i
,
1
)
-
length
/
2.
;
Real
dz
=
nodes
(
i
,
2
)
-
length
/
2.
;
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"
);
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
;
}
std
::
cout
<<
"Stable Time Step is : "
<<
time_step
<<
std
::
endl
;
return
0
;
}
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