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Sat, Oct 5, 04:13
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text/x-python
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Mon, Oct 7, 04:13 (2 d)
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R9482 SP4E_Homework_Ashtari_Sieber
main.py
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#!/bin/env python3
import
sys
import
argparse
import
pypart
from
pypart
import
*
"""
from pypart import MaterialPointsFactory, ParticlesFactoryInterface
from pypart import PingPongBallsFactory, PlanetsFactory
from pypart import CsvWriter
from pypart import ComputeTemperature
from pypart import ComputeGravity
from pypart import ComputeVerletIntegration
"""
# help(pypart)
def
main
(
nsteps
,
freq
,
filename
,
particle_type
,
timestep
):
#print(pypart.__file__)
if
particle_type
==
"planet"
:
PlanetsFactory
.
getInstance
()
elif
particle_type
==
"ping_pong"
:
PingPongBallsFactory
.
getInstance
()
elif
particle_type
==
"material_point"
:
MaterialPointsFactory
.
getInstance
()
else
:
print
(
"Unknown particle type: "
,
particle_type
)
sys
.
exit
(
-
1
)
factory
=
ParticlesFactoryInterface
.
getInstance
()
def
createComputes
(
self
,
timestep
):
if
particle_type
==
"planet"
:
try
:
compute_grav
=
ComputeGravity
()
compute_verlet
=
ComputeVerletIntegration
(
timestep
)
G
=
6.67384e-11
# m^3 * kg^-1 * s^-2
UA
=
149597870.700
# km
earth_mass
=
5.97219e24
# kg
G
/=
(
UA
*
1e3
)
**
3
# UA^3 * kg^-1 * s^-2
G
*=
earth_mass
# UA^3 * earth_mass^-1 * s^-2
G
*=
(
60
*
60
*
24
)
**
2
# UA^3 * earth_mass^-1 * day^-2
compute_grav
.
setG
(
G
)
compute_verlet
.
addInteraction
(
compute_grav
)
self
.
system_evolution
.
addCompute
(
compute_verlet
)
except
Exception
as
e
:
help
(
compute_grav
)
raise
e
elif
particle_type
==
'material_points'
:
try
:
compute_temp
=
ComputeTemperature
()
compute_temp
.
conductivity
=
1
compute_temp
.
L
=
2
compute_temp
.
capacity
=
1
compute_temp
.
density
=
1
compute_temp
.
deltat
=
1
self
.
system_evolution
.
addCompute
(
compute_temp
)
except
Exception
as
e
:
help
(
compute_temp
)
raise
e
evol
=
factory
.
createSimulation
(
filename
,
timestep
,
createComputes
)
dumper
=
CsvWriter
(
"out.csv"
)
dumper
.
write
(
evol
.
getSystem
())
evol
.
setNSteps
(
nsteps
)
evol
.
setDumpFreq
(
freq
)
evol
.
evolve
()
if
__name__
==
"__main__"
:
parser
=
argparse
.
ArgumentParser
(
description
=
'Particles code'
)
parser
.
add_argument
(
'nsteps'
,
type
=
int
,
help
=
'specify the number of steps to perform'
)
parser
.
add_argument
(
'freq'
,
type
=
int
,
help
=
'specify the frequency for dumps'
)
parser
.
add_argument
(
'filename'
,
type
=
str
,
help
=
'start/input filename'
)
parser
.
add_argument
(
'particle_type'
,
type
=
str
,
help
=
'particle type'
)
parser
.
add_argument
(
'timestep'
,
type
=
float
,
help
=
'timestep'
)
args
=
parser
.
parse_args
()
nsteps
=
args
.
nsteps
freq
=
args
.
freq
filename
=
args
.
filename
particle_type
=
args
.
particle_type
timestep
=
args
.
timestep
#main(nsteps,freq,filename,particle_type,timestep)
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