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helmholtz_external.py
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Created
Sat, Aug 17, 11:13
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1 KB
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text/x-python
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Mon, Aug 19, 11:13 (2 d)
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19953171
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R6746 RationalROMPy
helmholtz_external.py
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# Copyright (C) 2018 by the RROMPy authors
#
# This file is part of RROMPy.
#
# RROMPy 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.
#
# RROMPy 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 RROMPy. If not, see <http://www.gnu.org/licenses/>.
#
import
numpy
as
np
from
rrompy.hfengines.linear_problem
import
(
HelmholtzCavityScatteringProblemEngine
,
HelmholtzBoxScatteringProblemEngine
)
def
test_helmholtz_square_scattering
():
solver
=
HelmholtzCavityScatteringProblemEngine
(
kappa
=
4
,
gamma
=
2.
,
n
=
50
,
verbosity
=
0
)
mu
=
5
uh
=
solver
.
solve
(
mu
)
assert
np
.
isclose
(
solver
.
norm
(
uh
),
20.6980450234954
,
rtol
=
1e-5
)
assert
np
.
isclose
(
solver
.
norm
(
solver
.
residual
(
uh
,
mu
)),
4.25056407e-13
,
rtol
=
1e-1
)
def
test_helmholtz_box_scattering
():
solver
=
HelmholtzBoxScatteringProblemEngine
(
R
=
2
,
kappa
=
10.
,
theta
=
np
.
pi
*
30
/
180
,
n
=
50
,
verbosity
=
0
)
mu
=
15
uh
=
solver
.
solve
(
mu
)
solver
.
plotmesh
(
show
=
False
,
figsize
=
(
7
,
7
))
assert
np
.
isclose
(
solver
.
norm
(
uh
),
64.05173319241996
,
rtol
=
1e-5
)
assert
np
.
isclose
(
solver
.
norm
(
solver
.
residual
(
uh
,
mu
)),
9.62989935e-13
,
rtol
=
1e-1
)
from
matplotlib
import
pyplot
as
plt
plt
.
close
(
'all'
)
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