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fluidparticles
MigFlow
Commits
6aa91be4
Commit
6aa91be4
authored
Aug 05, 2021
by
Nathan Coppin
Browse files
saving modif in depot
parent
71cdde71
Pipeline
#9577
failed with stages
in 1 minute
Changes
3
Pipelines
1
Hide whitespace changes
Inline
Side-by-side
python/scontact.py
View file @
6aa91be4
...
...
@@ -660,9 +660,9 @@ class ParticleProblem :
def
remove_bodies_flag
(
self
,
flag
)
:
"""Removes particles based on given flag."""
if
flag
.
shape
!=
(
self
.
n_
particl
es
(),)
:
if
flag
.
shape
!=
(
self
.
n_
bodi
es
(),)
:
raise
NameError
(
"size of flag array should be the number of particles"
)
self
.
_lib
.
particle_roblem_remove_bodies
(
self
.
_p
,
_np2c
(
flag
,
np
.
int32
))
self
.
_lib
.
particle_
p
roblem_remove_bodies
(
self
.
_p
,
_np2c
(
flag
,
np
.
int32
))
def
load_msh_boundaries
(
self
,
filename
,
tags
=
None
,
shift
=
None
,
material
=
"default"
)
:
...
...
testcases/depot-2d/depot.py
View file @
6aa91be4
...
...
@@ -17,6 +17,25 @@
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program (see COPYING and COPYING.LESSER files). If not,
# MigFlow - Copyright (C) <2010-2020>
# <Universite catholique de Louvain (UCL), Belgium
# Universite de Montpellier, France>
#
# List of the contributors to the development of MigFlow: see AUTHORS file.
# Description and complete License: see LICENSE file.
#
# This program (MigFlow) 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.
#
# This program 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 this program (see COPYING and COPYING.LESSER files). If not,
# see <http://www.gnu.org/licenses/>.
#!/usr/bin/env python
...
...
@@ -31,8 +50,9 @@ from migflow import time_integration
import
numpy
as
np
import
os
import
time
import
shutil
import
matplotlib.pyplot
as
plt
import
time
import
random
def
genInitialPosition
(
filename
,
r
,
H
,
ly
,
lx
,
rhop
)
:
...
...
@@ -48,45 +68,51 @@ def genInitialPosition(filename, r, H, ly, lx, rhop) :
"""
# Particles structure builder
p
=
scontact
.
ParticleProblem
(
2
)
#p2 = scontact.ParticleProblem(2)
# Load mesh.msh file specifying physical boundaries names
#p2.load_msh_boundaries("mesh.msh", ["Top", "Lateral","Bottom"])
#for i in range(p2.segments().shape[0]):
# p.add_boundary_segment((0,0),(1,1),0)
#p.segments()[:] = p2.segments()[:]
#print(p2.segments()[:],p.segments()[:])
p
.
add_boundary_segment
((
-
0.2
,
-
0.3
),(
-
0.2
,
0.3
),
0
)
p
.
add_boundary_segment
((
-
0.2
,
0.3
),(
0.2
,
0.3
),
0
)
p
.
add_boundary_segment
((
0.2
,
0.3
),(
0.2
,
-
0.3
),
0
)
p
.
add_boundary_segment
((
0.2
,
-
0.3
),(
-
0.2
,
-
0.3
),
0
)
#Definition of the points where the particles are located
x
=
np
.
arange
(
-
lx
/
2
+
r
-
1e-8
,
lx
/
2
-
r
+
1e-8
,
2.05
*
r
)
y
=
np
.
arange
(
H
/
2
-
r
,
H
/
2
-
ly
+
r
,
-
2.05
*
r
)
x
,
y
=
np
.
meshgrid
(
x
,
y
)
x
=
x
.
flat
y
=
y
.
flat
#Add a grain at each centre position
for
i
in
range
(
len
(
x
))
:
p
.
add_particle
(
np
.
array
([
x
[
i
],
y
[
i
]]),
r
,
r
**
2
*
np
.
pi
*
rhop
)
#p.add_particle_body(np.array([[0,0],[6*r,0],[12*r,0]]),np.array([3*r,3*r,3*r]),np.pi*rhop*np.array([3*r,3*r,3*r])**2)
p
.
add_boundary_segment
((
-
0.07
,
-
0.21
),(
-
0.07
,
0.23
/
5
),
0
,
"Steel"
)
p
.
add_boundary_segment
((
-
0.07
,
0.23
/
5
),(
0.07
,
0.23
/
5
),
0
,
"Steel"
)
p
.
add_boundary_segment
((
0.07
,
0.23
/
5
),(
0.07
,
-
0.21
),
0
,
"Steel"
)
p
.
add_boundary_segment
((
0.07
,
-
0.21
),(
-
0.07
,
-
0.21
),
0
,
"Steel"
)
R
=
np
.
ones
((
8
))
*
r
angle
=
5
Dx
=
2
*
r
*
np
.
cos
(
np
.
deg2rad
(
angle
))
Dy
=
2
*
r
*
np
.
sin
(
np
.
deg2rad
(
angle
))
pos
=
np
.
array
([[
s
*
Dx
,
s
*
Dy
]
for
s
in
range
(
8
)])
material
=
np
.
array
([
"Sand"
for
i
in
range
(
8
)],
dtype
=
object
)
pos2
=
np
.
copy
(
pos
)
R2
=
np
.
copy
(
R
)
mat2
=
np
.
copy
(
material
)
for
i
in
range
(
1
):
pos
=
np
.
concatenate
((
pos
,
pos2
+
np
.
array
([
-
(
i
+
1
)
*
Dy
,(
i
+
1
)
*
Dx
])))
R
=
np
.
concatenate
((
R
,
R2
))
material
=
np
.
concatenate
((
material
,
mat2
))
#R = np.concatenate((R,np.array([r,r,r,r,r,r])))
#material = np.concatenate((material,np.array(["Sand","Sand","Sand","Sand","Sand","Sand"],dtype=object)))
#pos3 = np.array([[s*Dx,s*Dy+0.013] for s in [0,15]])
#for i in range (3):
# pos = np.concatenate((pos,pos3+np.array([-(i+1)*Dy,(i+1)*Dx])))
#for i in range(1,4):
# for j in range(1,15):
# material[16*i + j] = "ignore"
p
.
add_particle_body
(
pos
,
R
,
np
.
pi
*
rhop
*
R
**
2
,
material
)
p
.
write_vtk
(
filename
,
0
,
0
)
# Define output directory
outputdir
=
"output"
outputdir
=
"output
LowDragHighI*
"
if
not
os
.
path
.
isdir
(
outputdir
)
:
os
.
makedirs
(
outputdir
)
# Physical parameters
g
=
np
.
array
([
0
,
-
9.81
])
# gravity
r
=
1
.
5e-3
# particles radius
rhop
=
1
50
0
# particles density
r
=
2.
15e-3
/
4
# particles radius
rhop
=
1
84
0
# particles density
rho
=
1000
# fluid density
nu
=
1e-6
# kinematic viscosity
# Numerical parameters
outf
=
1
0
# number of iterations between output files
dt
=
1e-3
# time step
tEnd
=
100
# final time
outf
=
1
# number of iterations between output files
dt
=
1e-3
# time step
tEnd
=
2.5
# final time
# Geometrical parameters
ly
=
1e-1
# particles area height
...
...
@@ -101,17 +127,18 @@ genInitialPosition(outputdir, r, H, ly, lx, rhop)
p
=
scontact
.
ParticleProblem
(
2
)
p
.
read_vtk
(
outputdir
,
0
)
p
.
set_friction_coefficient
(
0.
,
"Sand"
,
"Steel"
)
# Initial time and iteration
t
=
0
ii
=
0
p
.
body_invert_mass
()[
4
]
=
1
/
(
rhop
*
6.92e-3
*
1.25
*
2.15e-3
)
p
.
body_invert_inertia
()[
4
]
=
12
*
p
.
body_invert_mass
()[
4
]
/
(
6.92e-3
**
2
+
(
1.25
*
2.15e-3
)
**
2
)
#
# FLUID PROBLEM
#
fluid
=
fluid
.
FluidProblem
(
2
,
g
,[
nu
*
rho
],[
rho
])
# Set the mesh geometry for the fluid computation
fluid
.
load_msh
(
"
mesh
.msh"
)
fluid
.
load_msh
(
"
rect
.msh"
)
fluid
.
set_wall_boundary
(
"Bottom"
)
fluid
.
set_wall_boundary
(
"Lateral"
)
fluid
.
set_wall_boundary
(
"Top"
,
pressure
=
0
)
...
...
@@ -124,8 +151,60 @@ tic = time.time()
#
# COMPUTATION LOOP
#
xdata
=
[]
ydata1
=
[]
ydata2
=
[]
ydata3
=
[]
ydata4
=
[]
fig
,
((
ax1
,
ax2
),(
ax3
,
ax4
))
=
plt
.
subplots
(
2
,
2
)
ax1
.
plot
(
np
.
linspace
(
0
,
6
,
1000
),
np
.
zeros
(
1000
))
ax1
.
set_xlim
(
0
,
6
)
ax1
.
set_ylim
(
-
np
.
pi
,
np
.
pi
)
ax1
.
set_title
(
'Theta'
)
line1
,
=
ax1
.
plot
(
xdata
,
ydata1
,
'r-'
)
ax2
.
plot
(
np
.
linspace
(
0
,
6
,
1000
),
np
.
zeros
(
1000
))
ax2
.
set_xlim
(
0
,
6
)
ax2
.
set_ylim
(
-
30
,
30
)
ax2
.
set_title
(
'Omega'
)
line2
,
=
ax2
.
plot
(
xdata
,
ydata2
,
'c-'
)
ax3
.
plot
(
np
.
linspace
(
0
,
6
,
1000
),
np
.
zeros
(
1000
))
ax3
.
set_xlim
(
0
,
6
)
ax3
.
set_ylim
(
-
0.1
,
0.1
)
ax3
.
set_title
(
'Vx'
)
line3
,
=
ax3
.
plot
(
xdata
,
ydata3
,
'k-'
)
ax4
.
plot
(
np
.
linspace
(
0
,
6
,
1000
),
np
.
zeros
(
1000
))
ax4
.
set_xlim
(
0
,
6
)
ax4
.
set_ylim
(
-
0.2
,
0.1
)
ax4
.
set_title
(
'Vy'
)
line4
,
=
ax4
.
plot
(
xdata
,
ydata4
,
'g-'
)
while
t
<
tEnd
:
time_integration
.
iterate
(
fluid
,
p
,
dt
,
min_nsub
=
5
,
external_particles_forces
=
g
*
p
.
r
()
**
2
*
rhop
*
np
.
pi
)
#xdata.append(t)
#ydata1.append(p.body_theta()[4][0])
#line1.set_xdata(xdata)
#line1.set_ydata(ydata1)
#ydata2.append(p.body_omega()[4][0])
#line2.set_xdata(xdata)
#line2.set_ydata(ydata2)
#ydata3.append(p.body_velocity()[4][0])
#line3.set_xdata(xdata)
#line3.set_ydata(ydata3)
#ydata4.append(p.body_velocity()[4][1])
#line4.set_xdata(xdata)
#line4.set_ydata(ydata4)
#plt.draw()
#plt.pause(1e-21)
time_integration
.
iterate
(
fluid
,
p
,
dt
,
min_nsub
=
1
,
external_particles_forces
=
g
*
p
.
r
()
**
2
*
rhop
*
np
.
pi
)
t
+=
dt
# Output files writting
...
...
@@ -135,3 +214,6 @@ while t < tEnd :
fluid
.
write_vtk
(
outputdir
,
ioutput
,
t
)
ii
+=
1
print
(
"%i : %.2g/%.2g (cpu %.6g)"
%
(
ii
,
t
,
tEnd
,
time
.
time
()
-
tic
))
print
(
"
\n\n
Cluster velocity : %f
\n\n
"
%
(
np
.
linalg
.
norm
(
p
.
body_velocity
()[
4
,:])))
plt
.
show
()
testcases/depot-2d/mesh.geo
View file @
6aa91be4
L = 0.2;
L = 0.2;
H = 0.3;
y = 0;
lc = 0.01;
...
...
@@ -11,16 +11,16 @@ Line(1) = {1, 2};
Line(2) = {2, 3};
Line(3) = {3, 4};
Line(4) = {4, 1};
Point(5) = {0,0.52,
0
};
Point(5) = {0,0.52,
lc
};
Line Loop(1) = {1:4};
Plane Surface(1) = {1};
Physical Line("Bottom") = {2};
Physical Line("Lateral") = {1,3};
Physical Line("Top") = {4};
Physical Surface("Domain") = {1};
Physical Point("PtFix") = {1};
Mesh.CharacteristicLengthFromPoints = 1;
Mesh.MshFileVersion = 2;
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