Question #699072 on Yade changed:
https://answers.launchpad.net/yade/+question/699072
Status: Needs information => Open
Ziyu Wang gave more information on the question:
Hello,Robert
1.I have followed your suggestion, installed ubuntu18.04 and installed
Source-code.Unfortunately,the problem still exists..:
CHOLMOD warning: matrix not positive definite. file:
../Supernodal/t_cholmod_super_numeric.c line: 911
/usr/lib/python3/dist-packages/matplotlib/__init__.py:831:
MatplotlibDeprecationWarning: axes.color_cycle is deprecated and replaced with
axes.prop_cycle; please use the latter.
mplDeprecation)
/usr/lib/python3/dist-packages/matplotlib/__init__.py:801:
MatplotlibDeprecationWarning: axes.color_cycle is deprecated and replaced with
axes.prop_cycle; please use the latter.
mplDeprecation)
printAllVersions():
Yade version : 2021-10-08.git-a6d7547
Yade features : LOGGER USEFUL_ERRORS VTK OPENMP GTS QT5 CGAL PFVFLOW PFVFLOW
LINSOLV MPI TWOPHASEFLOW FEMLIKE GL2PS LBMFLOW THERMAL PARTIALSAT
POTENTIAL_PARTICLES POTENTIAL_BLOCKS
Yade config dir: ~/.yade-2021-10-08.git-a6d7547
Yade precision : 53 bits, 15 decimal places, without mpmath, PrecisionDouble
```
Libraries used :
| library | cmake| C++ |
| - | | --- |
| boost | 106501 | 1.65.1 |
| cgal | | 4.11|
| clp | 1.16.11 | 1.16.11 |
| cmake | 3.10.2 | |
| coinutils | 2.10.14 | 2.10.14 |
| compiler | /usr/bin/c++ 7.5.0 | gcc 7.5.0 |
| eigen | 3.3.4| 3.3.4 |
| freeglut | 2.8.1| |
| gl| | 20190911|
| ipython | 5.5.0| |
| metis | | 5.1.0 |
| mpi | 3.1 | ompi:2.1.1 |
| mpi4py| 2.0.0| |
| mpmath| 1.0.0| |
| openblas | | OpenBLAS 0.2.20|
| python| 3.6.9| 3.6.9 |
| qglviewer | | 2.6.3 |
| qt| | 5.9.5 |
| sphinx| 1.6.7-final-0| |
| sqlite| | 3.22.0 |
| suitesparse | 5.1.2| 5.1.2 |
| vtk | 6.3.0| 6.3.0 |
```
Linux version : Ubuntu 18.04.6 LTS
Architecture : amd64
Little endian : True
(ps:other example scripts such as flowscenario and THMcoupling can run
normally,only this script is unsuccessful, maybe it is my personal
installation problem?)
2.>>Have you actually looked at your packing? It seems you are
simulating a gaseous state of spheres (although there is no way to know
without an MWE). ThermalEngine was not designed to handle this kind of
packing.
Sorry for my stupidity,does the gaseous state of the sphere mean that
the sphere is too scattered (not dense enough?).I refer to
thermoHydroMechanical_coupling.py before using makecloud. Is there
anything wrong?
MWE as follows:
#
from yade import pack, ymport
from yade import timing
import numpy as np
import shutil
timeStr = time.strftime('%m-%d-%Y')
num_spheres=1000# number of spheres
young=1e9
rad=0.003
mn,mx=Vector3(0,0,0),Vector3(0.05,0.05,0.05) # corners of the initial
packing
thermalCond = 2. #W/(mK)
heatCap = 710. #J(kg K)
t0 = 333.15 #K
r = rad
k = 2.0 # 2*k*r
Cp = 710.
rho = 2600.
D = 2.*r
m = 4./3.*np.pi*r**2/rho
identifier = '-noFlowScenario'
if not os.path.exists('VTK'+timeStr+identifier):
os.mkdir('VTK'+timeStr+identifier)
else:
shutil.rmtree('VTK'+timeStr+identifier)
os.mkdir('VTK'+timeStr+identifier)
if not os.path.exists('txt'+timeStr+identifier):
os.mkdir('txt'+timeStr+identifier)
else:
shutil.rmtree('txt'+timeStr+identifier)
os.mkdir('txt'+timeStr+identifier)
mn,mx=Vector3(0,0,0),Vector3(0.05,0.05,0.05)
O.materials.append(FrictMat(young=young,poisson=0.5,frictionAngle=radians(3),density=2600,label='spheres'))
O.materials.append(FrictMat(young=young,poisson=0.5,frictionAngle=0,density=0,label='walls'))
walls=aabbWalls([mn,mx],thickness=0,material='walls')
wallIds=O.bodies.append(walls)
sp=SpherePack()
sp.makeCloud(mn,mx,num=100,rRelFuzz=0.333)
sp.toSimulation(material='spheres')
print('num bodies ', len(O.bodies))
triax=TriaxialStressController(
maxMultiplier=1.+2e4/young,
finalMaxMultiplier=1.+2e3/young,
thickness = 0,
stressMask = 7,
internalCompaction=True,
)
ThermalEngine =
