Re: [Yade-users] [Question #707197]: Undrained triaxial (NOT CONSTANT VOLUME)

2023-08-31 Thread Bruno Chareyre
Question #707197 on Yade changed: https://answers.launchpad.net/yade/+question/707197 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, The issue doesn't seem to be closed. So, no, you don't have to close it. I don't have time to inspect any new script now, tho

Re: [Yade-users] [Question #707183]: High unbalanced force ratio

2023-07-03 Thread Bruno Chareyre
Question #707183 on Yade changed: https://answers.launchpad.net/yade/+question/707183 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, > "I don't know why the high unbalanced force ratio happened and exists without any trend toward reduction." T

Re: [Yade-users] [Question #707148]: Cylindrical triaxial test using Pfacet

2023-07-03 Thread Bruno Chareyre
Question #707148 on Yade changed: https://answers.launchpad.net/yade/+question/707148 Bruno Chareyre proposed the following answer: Hi, > "My problem is that I just finished the part about generating flexible membranes using Pfacet and don't know what to do next." I did not read al

Re: [Yade-users] [Question #707019]: plot.plot() issue...unexpected keyword argument 'verts'

2023-06-21 Thread Bruno Chareyre
Question #707019 on Yade changed: https://answers.launchpad.net/yade/+question/707019 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, in general using "pip install" is the best way to break a debian distribution. What you get is not systematic but

Re: [Yade-users] [Question #706740]: Excess pore-water pressure in triaxial test

2023-06-21 Thread Bruno Chareyre
Question #706740 on Yade changed: https://answers.launchpad.net/yade/+question/706740 Bruno Chareyre proposed the following answer: I doubt vtkRecorder was the problem given this line (related to solving a linear system): CHOLMOD error: invalid xtype. file: ../Cholesky/cholmod_analyze.c line

Re: [Yade-users] [Question #706740]: Excess pore-water pressure in triaxial test

2023-06-19 Thread Bruno Chareyre
Question #706740 on Yade changed: https://answers.launchpad.net/yade/+question/706740 Bruno Chareyre proposed the following answer: Thanks. We have the same versions... hard to tell why it doesn't give the same behavior on two computers and very difficult to debug. Do you get the same error

Re: [Yade-users] [Question #706740]: Excess pore-water pressure in triaxial test

2023-06-15 Thread Bruno Chareyre
Question #706740 on Yade changed: https://answers.launchpad.net/yade/+question/706740 Bruno Chareyre proposed the following answer: Try yadedaily? -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #706740]: Excess pore-water pressure in triaxial test

2023-06-15 Thread Bruno Chareyre
Question #706740 on Yade changed: https://answers.launchpad.net/yade/+question/706740 Bruno Chareyre proposed the following answer: 2018... Apparently something has been improved since then. I suggest using a newer version. -- You received this question notification because your team yade-users

Re: [Yade-users] [Question #706740]: Excess pore-water pressure in triaxial test

2023-06-15 Thread Bruno Chareyre
Question #706740 on Yade changed: https://answers.launchpad.net/yade/+question/706740 Bruno Chareyre requested more information: I cannot reproduce your problem with current yadedaily (20230525-7264~94b01fd~focal1). Which version are you using? -- You received this question notification

Re: [Yade-users] [Question #706740]: Excess pore-water pressure in triaxial test

2023-06-15 Thread Bruno Chareyre
Question #706740 on Yade changed: https://answers.launchpad.net/yade/+question/706740 Bruno Chareyre proposed the following answer: Initially, I thought your script was crashing in undrained conditions. I thus conjectured that it could come from uninitialized pressure. But in fact the script

Re: [Yade-users] [Question #706740]: Excess pore-water pressure in triaxial test

2023-06-15 Thread Bruno Chareyre
Question #706740 on Yade changed: https://answers.launchpad.net/yade/+question/706740 Bruno Chareyre proposed the following answer: > I imposed pressure (flow.imposePressure) No, you don't. In the script this line is commented out. If you were imposing pressure it would be a "drain

Re: [Yade-users] [Question #706740]: Excess pore-water pressure in triaxial test

2023-06-14 Thread Bruno Chareyre
Question #706740 on Yade changed: https://answers.launchpad.net/yade/+question/706740 Bruno Chareyre proposed the following answer: Hi, I checked the script and I did not see a problem. There is a pressure response by the fluid when loading is applied. Did you expect something different? How

Re: [Yade-users] [Question #706740]: Excess pore-water pressure in triaxial test

2023-05-30 Thread Chareyre
Question #706740 on Yade changed: https://answers.launchpad.net/yade/+question/706740 Chareyre proposed the following answer: No, not yet. In the coming days with a bit of luck. Message d'origine De : Fedor Date : 30/05/2023 16:55 (GMT+01:00) À : bruno.chare...@grenoble

Re: [Yade-users] [Question #706740]: Excess pore-water pressure in triaxial test

2023-05-25 Thread Bruno Chareyre
Question #706740 on Yade changed: https://answers.launchpad.net/yade/+question/706740 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi Fedor, Mathematically it should be possible to solve for pressure when the fluid is compressible (else it is ill-po

Re: [Yade-users] [Question #706573]: Troble with porosity calculation

2023-05-11 Thread Bruno Chareyre
Question #706573 on Yade changed: https://answers.launchpad.net/yade/+question/706573 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello, Most likely this equation is erroneous: new_volume_cylinder = math.pi * (0.051)**2 * top In fact I don't see &qu

Re: [Yade-users] [Question #706571]: Problem with using rolling resistance in ViscElCap physics

2023-05-11 Thread Bruno Chareyre
Question #706571 on Yade changed: https://answers.launchpad.net/yade/+question/706571 Status: Open => Needs information Bruno Chareyre requested more information: Hi, could you detail the differences between a working version (before "When I add mR to my script") and a non wo

Re: [Yade-users] [Question #706569]: Dynamic Triaxial test

2023-05-11 Thread Bruno Chareyre
Question #706569 on Yade changed: https://answers.launchpad.net/yade/+question/706569 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, You can use "goal" and "stressMask" [1] to impose stress in some direction. If you can do that then y

Re: [Yade-users] [Question #706553]: About simulating constant volume condition in a triaxial test

2023-05-11 Thread Bruno Chareyre
Question #706553 on Yade changed: https://answers.launchpad.net/yade/+question/706553 Bruno Chareyre posted a new comment: Hi, I think strain damping could give a null volumetric rate in this case. It's consistent with the fact that even with 0.99 ev is still (somehow) small. The algorithm

Re: [Yade-users] [Question #706218]: Microstrain for an assembly of clumps in direct shear test

2023-04-21 Thread Bruno Chareyre
Question #706218 on Yade changed: https://answers.launchpad.net/yade/+question/706218 Bruno Chareyre posted a new comment: Hi, I confirm that clumps are not supported in this case. In fact, it should work if the clumped spheres are not overlapping too much, but in the general case it won't. Jan

Re: [Yade-users] [Question #706072]: Simple shear with oedometric loading

2023-04-11 Thread Bruno Chareyre
Question #706072 on Yade changed: https://answers.launchpad.net/yade/+question/706072 Status: Open => Needs information Bruno Chareyre requested more information: Could you show a script where walls do not follow the prescribed velocity gradient? -- You received this question notificat

Re: [Yade-users] [Question #706100]: Torque values too low

2023-04-07 Thread Bruno Chareyre
Question #706100 on Yade changed: https://answers.launchpad.net/yade/+question/706100 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, > Is this normal DEM behavior? I don't know what "normal DEM behavior" is, so I would say "

Re: [Yade-users] [Question #706072]: Simple shear with oedometric loading

2023-04-07 Thread Bruno Chareyre
Question #706072 on Yade changed: https://answers.launchpad.net/yade/+question/706072 Bruno Chareyre proposed the following answer: Hi, In fact, allowBiggerThanPeriod=True is perfectly fine, and it is designed exactly for this case where large plates are used as boundary conditions. You need

Re: [Yade-users] [Question #705955]: MindlinDeresiewitz Contact Law Issue

2023-03-27 Thread Bruno Chareyre
Question #705955 on Yade changed: https://answers.launchpad.net/yade/+question/705955 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, > Has the contact law been tested before? I am not quite sure. Maybe Chiara Modenese used mainly one of the different ve

Re: [Yade-users] [Question #705913]: how to run yade on multiple nodes using openmpi

2023-03-27 Thread Bruno Chareyre
Question #705913 on Yade changed: https://answers.launchpad.net/yade/+question/705913 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, Your problems seem very platform dependent. I have been working in a couple different contexts and I have never seen a n

Re: [Yade-users] [Question #705760]: How to get the runtime or CPU time?

2023-03-09 Thread Bruno Chareyre
Question #705760 on Yade changed: https://answers.launchpad.net/yade/+question/705760 Bruno Chareyre proposed the following answer: Python's time.time() is enough in many cases, as long as you don't need per-engine data or nano-second accuracy. t1 = time.time() O.run(...) realTime = time.time

Re: [Yade-users] [Question #705740]: GlobalStiffnessTimestepper gives dt of 0.0 when the saved file is restored

2023-03-09 Thread Bruno Chareyre
Question #705740 on Yade changed: https://answers.launchpad.net/yade/+question/705740 Status: Open => Answered Bruno Chareyre proposed the following answer: I was not questioning why you use multiple scripts to produce results, this is your business (although none of the reasons you l

Re: [Yade-users] [Question #705150]: Yade-OpenFOAM coupling

2023-03-09 Thread Bruno Chareyre
Question #705150 on Yade changed: https://answers.launchpad.net/yade/+question/705150 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, "yadeimport" used to be a symlink to the yade executable, created locally by the user. If you run, let's say, t

Re: [Yade-users] [Question #705740]: GlobalStiffnessTimestepper gives dt of 0.0 when the saved file is restored

2023-03-07 Thread Bruno Chareyre
Question #705740 on Yade changed: https://answers.launchpad.net/yade/+question/705740 Status: Needs information => Answered Bruno Chareyre proposed the following answer: Something rings a bell: O.bodies[-1].state.blockedDOFs='xyXYZ' Does body "-1" have a mass, at least?... I'

Re: [Yade-users] [Question #705740]: GlobalStiffnessTimestepper gives dt of 0.0 when the saved file is restored

2023-03-07 Thread Bruno Chareyre
Question #705740 on Yade changed: https://answers.launchpad.net/yade/+question/705740 Status: Open => Needs information Bruno Chareyre requested more information: Hello, Could you please try an concatenate the files as much as possible (ideally just one file)? or find a way to reprod

Re: [Yade-users] [Question #704306]: DFN-Thermal Engine Link

2023-01-22 Thread Bruno Chareyre
Question #704306 on Yade changed: https://answers.launchpad.net/yade/+question/704306 Bruno Chareyre posted a new comment: Dear Ahmad, it is very difficult to answer without seeing an actual code. You should push code/scripts to some branch. One thing I can explain is that ThermalEngine

Re: [Yade-users] [Question #704434]: Pfacet in periodic boundary conditions

2023-01-19 Thread Bruno Chareyre
Question #704434 on Yade changed: https://answers.launchpad.net/yade/+question/704434 Status: Open => Answered Bruno Chareyre proposed the following answer: For the uniaxial periodicity, I think yes, what you do is correct. The hollowness is really not a problem. If you know the mass

Re: [Yade-users] [Question #704434]: Pfacet in periodic boundary conditions

2023-01-18 Thread Bruno Chareyre
Question #704434 on Yade changed: https://answers.launchpad.net/yade/+question/704434 Status: Open => Needs information Bruno Chareyre requested more information: Hello, I don't understand the problem very well. What is x,y,z? Is there gravity (which axis?)? Why do you care about the pl

Re: [Yade-users] [Question #704389]: Problem with OpenMP

2023-01-18 Thread Bruno Chareyre
Question #704389 on Yade changed: https://answers.launchpad.net/yade/+question/704389 Bruno Chareyre proposed the following answer: Hello Roxana, I have no real knowledge of how LiqControl works but maybe it's taking most of the time, and if it is not parallelized it would explain. I see you

Re: [Yade-users] [Question #704035]: O.save/O.load problem

2022-12-09 Thread Bruno Chareyre
Question #704035 on Yade changed: https://answers.launchpad.net/yade/+question/704035 Bruno Chareyre proposed the following answer: Hi, I reported the bug [1]. It sounds like an initialization problem that could be solved by inspecting how the YADE_CLASS_... macro is used. [1] https

Re: [Yade-users] [Question #703901]: whats the difference between “GlobalStiffnessTimeStepper”and "O.dt"

2022-12-01 Thread Bruno Chareyre
Question #703901 on Yade changed: https://answers.launchpad.net/yade/+question/703901 Bruno Chareyre posted a new comment: Hi, > I am confused coz I tried these two ways and they are different in my > simulation They are derived with slightly different logics and so they have no

Re: [Yade-users] [Question #703707]: Water pressure

2022-11-04 Thread Bruno Chareyre
Question #703707 on Yade changed: https://answers.launchpad.net/yade/+question/703707 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, > I assume 2PFV does not appropriate for this aim. Correct. For one-phase flow based on the PFV method the engine is Flow

Re: [Yade-users] [Question #703681]: Yade with RedHat / AlmaLinu

2022-11-04 Thread Bruno Chareyre
Question #703681 on Yade changed: https://answers.launchpad.net/yade/+question/703681 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, > 'VTKRecorder', 'TwoPhaseFlowEngine' is not defined. Apparently, you disabled them at compile time. Please post the

Re: [Yade-users] [Question #703498]: Young's modulus or the effect of the wall on the test

2022-11-04 Thread Bruno Chareyre
Question #703498 on Yade changed: https://answers.launchpad.net/yade/+question/703498 Bruno Chareyre proposed the following answer: Hi, Without knowing anything of your problem. My first guess is that even a symmetric distribution of positions will result in non-symmetric results, provided

Re: [Yade-users] [Question #703504]: Compilation and Running on HPC cluster -Centos 7

2022-11-04 Thread Bruno Chareyre
Question #703504 on Yade changed: https://answers.launchpad.net/yade/+question/703504 Bruno Chareyre posted a new comment: Hi, In your situation, I would first check if the host HPC has Singularity (maybe) or Docker (unlikely) available. If so, you don't need to compile. Just run a virtual

Re: [Yade-users] [Question #703489]: Lower corner and upper corner of the box in TriaxialStressController

2022-10-17 Thread Bruno Chareyre
Question #703489 on Yade changed: https://answers.launchpad.net/yade/+question/703489 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, You can indeed use the wall_XXX_id's to retrieve the boxes and take their positions. If thickness is 0 their positi

Re: [Yade-users] [Question #703284]: If the PeriodicFlowEngine can simulate the oedometer test

2022-10-13 Thread Bruno Chareyre
Question #703284 on Yade changed: https://answers.launchpad.net/yade/+question/703284 Status: Open => Answered Bruno Chareyre proposed the following answer: Q1. " could the setting of pressure be applied by flow.imposePressure()?" Yes, it could. Q2. Yes. Q3. Tak

Re: [Yade-users] [Question #703284]: If the PeriodicFlowEngine can simulate the oedometer test

2022-10-05 Thread Bruno Chareyre
Question #703284 on Yade changed: https://answers.launchpad.net/yade/+question/703284 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, Q1." flow.gradP?or flow.imposePressure() ?" both work and they are compatible with each other. Typically, you

Re: [Yade-users] [Question #703276]: The problem in PeritriaxController

2022-09-30 Thread Bruno Chareyre
Question #703276 on Yade changed: https://answers.launchpad.net/yade/+question/703276 Bruno Chareyre proposed the following answer: Thanks for finding that. I fixed PeriTriaxController in another merge request. [1] B [1] https://gitlab.com/yade-dev/trunk/-/merge_requests/892 -- You received

Re: [Yade-users] [Question #703169]: Energy conservation of clump

2022-09-21 Thread Bruno Chareyre
Question #703169 on Yade changed: https://answers.launchpad.net/yade/+question/703169 Status: Open => Answered Bruno Chareyre proposed the following answer: It will be fixed with https://gitlab.com/yade-dev/trunk/-/merge_requests/891. I confirmed the fix with a modified version of

Re: [Yade-users] [Question #703169]: Energy conservation of clump

2022-09-21 Thread Bruno Chareyre
Question #703169 on Yade changed: https://answers.launchpad.net/yade/+question/703169 Bruno Chareyre posted a new comment: I found the problem, getStress does not handle clumps... In the product f*branch, "branch" should point to one single point per body (in this case: per clump

Re: [Yade-users] [Question #703169]: Energy conservation of clump

2022-09-19 Thread Bruno Chareyre
Question #703169 on Yade changed: https://answers.launchpad.net/yade/+question/703169 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, that changing members size results in different stiffness is a correct observation. It is not "wrong", in the se

Re: [Yade-users] [Question #702448]: 2PFV - update Triangulation

2022-07-27 Thread Bruno Chareyre
Question #702448 on Yade changed: https://answers.launchpad.net/yade/+question/702448 Status: Open => Answered Bruno Chareyre proposed the following answer: updateTriangulation is inherited from one-phase flow engine. If it is triggered in the 2-phase child class (not tested) the b

Re: [Yade-users] [Question #702448]: 2PFV - update Triangulation

2022-07-26 Thread Bruno Chareyre
Question #702448 on Yade changed: https://answers.launchpad.net/yade/+question/702448 Bruno Chareyre proposed the following answer: Hi, The simple answer, not very satisfying I'm afraid, is "mesh doesn't evolve". The engine builds a static pore network. How to update the network in a

Re: [Yade-users] [Question #702411]: Calculation of a time averaging of a physical quantity

2022-07-08 Thread Chareyre
Question #702411 on Yade changed: https://answers.launchpad.net/yade/+question/702411 Chareyre posted a new comment: I don't understand last question, sorry. -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #702418]: About flow.bndCondIsPressure and flow.bndCondValue in flowengine

2022-07-08 Thread Bruno Chareyre
Question #702418 on Yade changed: https://answers.launchpad.net/yade/+question/702418 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, 1- Is "osmotic pressure" just the fluid pressure? ("osmotic" is strange in this context). 2- your pr

Re: [Yade-users] [Question #702412]: O.interactions[0, 1] is unable to detect the interactions between sphere and wall, throwing an error stating "No such interaction"

2022-07-07 Thread Bruno Chareyre
Question #702412 on Yade changed: https://answers.launchpad.net/yade/+question/702412 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, If there are only two bodies O.forces.f(0) and O.interactions[0,1] should be the same. Except that the first will not g

Re: [Yade-users] [Question #702411]: Calculation of a time averaging of a physical quantity

2022-07-07 Thread Bruno Chareyre
Question #702411 on Yade changed: https://answers.launchpad.net/yade/+question/702411 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, Something like this? timeSeries = [] while totalRotationhttps://launchpad.net/~yade-users Post to : yade-us

Re: [Yade-users] [Question #702407]: CGAL ERROR: assertion violation! when running HM coupling

2022-07-07 Thread Bruno Chareyre
Question #702407 on Yade changed: https://answers.launchpad.net/yade/+question/702407 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, This error suggests huge overlaps between some spheres, such that in some pore throats the intersected solid area is more t

[Yade-users] PDoc position in Grenoble (SPH-DEM)

2022-06-14 Thread Bruno Chareyre
ctures/181144 Thanks for sharing this announcement with potential candidates! Best regards S. LAMBERT and B. CHAREYRE [1] https://cloud.univ-grenoble-alpes.fr/s/yGrdzxQPWxwcagN ___ Mailing list: https://launchpad.net/~yade-users Post to : yade

Re: [Yade-users] [Question #702047]: Parametric study with yade-batch

2022-06-03 Thread Bruno Chareyre
Question #702047 on Yade changed: https://answers.launchpad.net/yade/+question/702047 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, Please show example scripts. Bruno -- You received this question notification because your team yade-users is an answer cont

Re: [Yade-users] [Question #701938]: Large size cylinderConnection in periodic scene

2022-06-01 Thread Bruno Chareyre
Question #701938 on Yade changed: https://answers.launchpad.net/yade/+question/701938 Bruno Chareyre proposed the following answer: Indeed, enlarged bboxes and cell distorsions may make 4 not enough, but you get the idea. B -- You received this question notification because your team yade

Re: [Yade-users] [Question #701938]: Large size cylinderConnection in periodic scene

2022-05-31 Thread Bruno Chareyre
Question #701938 on Yade changed: https://answers.launchpad.net/yade/+question/701938 Bruno Chareyre proposed the following answer: Welcome. If you define at least 3 (or maybe 4) you could turn off "allowBiggerThanPeriod". But as long it detects contacts properly it should be t

Re: [Yade-users] [Question #658938]: Modeling presence of water( a degree of saturation) in consolidation test

2022-05-30 Thread Bruno Chareyre
Question #658938 on Yade changed: https://answers.launchpad.net/yade/+question/658938 Bruno Chareyre proposed the following answer: Hi, please open a new question if you have one. Bruno -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #701938]: Large size cylinderConnection in periodic scene

2022-05-30 Thread Bruno Chareyre
Question #701938 on Yade changed: https://answers.launchpad.net/yade/+question/701938 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, I've seen working examples where the cylinder was discretized into multiple connexions, all smaller than period. It co

Re: [Yade-users] [Question #701743]: Alternative permeability values during the compaction

2022-05-30 Thread Bruno Chareyre
Question #701743 on Yade changed: https://answers.launchpad.net/yade/+question/701743 Bruno Chareyre posted a new comment: Hi, Please explain what is wrong in you opinion and how it can be reproduced. The script you pasted will not work for anyone else because of this line: spheres

[Yade-users] A PhD position in Limoge (France)

2022-05-23 Thread Bruno Chareyre
Hi, Please find the announcement below and feel free to forward. Regards Bruno -- Dear Yade users, please find below an open position about Discrete Element modeling. The targeted Discrete Element code is officially "GranOO" but it is open to other opensource codes (as Yade).

Re: [Yade-users] [Question #701782]: O.cell.volume=0 during flipCell

2022-05-19 Thread Bruno Chareyre
Question #701782 on Yade changed: https://answers.launchpad.net/yade/+question/701782 Bruno Chareyre proposed the following answer: At the moment it is a bit convolved to read your changes but it seems I was able to break your algorithm. A suspicious feature of yours is that it tries to align

Re: [Yade-users] [Question #701845]: Has ZeroInitForce been implemented?

2022-05-19 Thread Bruno Chareyre
Question #701845 on Yade changed: https://answers.launchpad.net/yade/+question/701845 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, The documentation should tell you if it is implemented for a particular functor. If it isn't, an easy way to offset is explai

Re: [Yade-users] [Question #701782]: O.cell.volume=0 during flipCell

2022-05-18 Thread Bruno Chareyre
Question #701782 on Yade changed: https://answers.launchpad.net/yade/+question/701782 Bruno Chareyre proposed the following answer: See more here: https://www.sciencedirect.com/science/article/abs/pii/030193229290074Q -- You received this question notification because your team yade-users

Re: [Yade-users] [Question #701836]: size vs. hSize vs. hSize0 vs. refSize in "Cell"

2022-05-18 Thread Bruno Chareyre
Question #701836 on Yade changed: https://answers.launchpad.net/yade/+question/701836 Bruno Chareyre proposed the following answer: Hi, "size, hSize, hSize0, and refSize" The simple answer is: "hSize" gives the current shape. You can ignore the others. Their documentation i

Re: [Yade-users] [Question #701782]: O.cell.volume=0 during flipCell

2022-05-18 Thread Bruno Chareyre
Question #701782 on Yade changed: https://answers.launchpad.net/yade/+question/701782 Bruno Chareyre posted a new comment: Hi, I'll check the suggested MR whenever I have a chance. The case of stretching can be overcomed in a few special cases. It needs to define an initial cell size

Re: [Yade-users] [Question #701782]: O.cell.volume=0 during flipCell

2022-05-13 Thread Bruno Chareyre
Question #701782 on Yade changed: https://answers.launchpad.net/yade/+question/701782 Status: Open => Answered Bruno Chareyre proposed the following answer: In principle all cells can be flipped, yes. What you get suggests that the automatic determination of the flip matrix fails. Not s

Re: [Yade-users] [Question #701764]: Use flipCell in periodic simulations

2022-05-12 Thread Bruno Chareyre
Question #701764 on Yade changed: https://answers.launchpad.net/yade/+question/701764 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, [1] is outdated, or maybe just misleading (it says "it needs to be done", not "it's not done"). And, yes,

Re: [Yade-users] [Question #701670]: Wrong permeability values during compaction

2022-05-12 Thread Bruno Chareyre
Question #701670 on Yade changed: https://answers.launchpad.net/yade/+question/701670 Status: Open => Answered Bruno Chareyre proposed the following answer: In the above code fragment (#11) you block DOFs but you don't solve any fluid flow after that, so it's completely ineffective. In

Re: [Yade-users] [Question #701670]: Wrong permeability values during compaction

2022-05-09 Thread Bruno Chareyre
Question #701670 on Yade changed: https://answers.launchpad.net/yade/+question/701670 Status: Open => Answered Bruno Chareyre proposed the following answer: If I understand well, you are compressing a packing with an imposed velocity of 0.3. As a result, the fluid goes out thro

Re: [Yade-users] [Question #701670]: Wrong permeability values during compaction

2022-05-09 Thread Bruno Chareyre
Question #701670 on Yade changed: https://answers.launchpad.net/yade/+question/701670 Status: Open => Answered Bruno Chareyre proposed the following answer: > in the oedometer section there is also triaxial load and unload for > compaction. > But I need just vertical load fo

Re: [Yade-users] [Question #701670]: Wrong permeability values during compaction

2022-05-05 Thread Bruno Chareyre
Question #701670 on Yade changed: https://answers.launchpad.net/yade/+question/701670 Status: Open => Answered Bruno Chareyre proposed the following answer: I don't know what you "should" use. It all depends on what you want to simulate. Which direction for the pressure gr

Re: [Yade-users] [Question #701670]: Wrong permeability values during compaction

2022-05-05 Thread Bruno Chareyre
Question #701670 on Yade changed: https://answers.launchpad.net/yade/+question/701670 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, The example script oedometer.py is doing exactly what you are asking and apparently you re-used it. But at the same time you s

Re: [Yade-users] [Question #701666]: How to present the pore network model in flowengine

2022-05-05 Thread Bruno Chareyre
Question #701666 on Yade changed: https://answers.launchpad.net/yade/+question/701666 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, There is indeed an export function for paraview: https://yade-dem.org/doc/yade.wrapper.html?highlight=flow%20eng

Re: [Yade-users] [Question #701641]: Non-Newtonian fluids in PFV model

2022-05-05 Thread Bruno Chareyre
Question #701641 on Yade changed: https://answers.launchpad.net/yade/+question/701641 Bruno Chareyre posted a new comment: Hi there, Just a quick comment: non-newtonian fluid flow at the pore scale sounds very interesting but right now I have no idea how to achieve that. It would need, I

Re: [Yade-users] [Question #701581]: Difference between FrictMat and cohFrictMat without cohesion and moment

2022-05-02 Thread Bruno Chareyre
Question #701581 on Yade changed: https://answers.launchpad.net/yade/+question/701581 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, Unless you found a bug, yes, the two cases should be equivalent. It's hard to know if you made a mistake in converting materi

Re: [Yade-users] [Question #701438]: Why particle velocity varies with time step

2022-05-02 Thread Bruno Chareyre
Question #701438 on Yade changed: https://answers.launchpad.net/yade/+question/701438 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, I guess you want to simulate elastic waves or something, but as I was reading phase 2 I did not see anything special exer

Re: [Yade-users] [Question #700953]: Oedometer test based on PSD

2022-03-17 Thread Bruno Chareyre
Question #700953 on Yade changed: https://answers.launchpad.net/yade/+question/700953 Bruno Chareyre proposed the following answer: This example is an oedometer with fluid coupling: https://gitlab.com/yade- dev/trunk/-/blob/master/examples/FluidCouplingPFV/oedometer.py -- You received

Re: [Yade-users] [Question #700953]: Oedometer test based on PSD

2022-03-16 Thread Bruno Chareyre
Question #700953 on Yade changed: https://answers.launchpad.net/yade/+question/700953 Status: Needs information => Answered Bruno Chareyre proposed the following answer: For PSD there is a good example here: https://gitlab.com/yade-dev/trunk/-/blob/master/examples/test/psd.py Bruno --

Re: [Yade-users] [Question #700931]: How to colour in the particles in my own specific way (sequence)

2022-03-16 Thread Bruno Chareyre
Question #700931 on Yade changed: https://answers.launchpad.net/yade/+question/700931 Status: Needs information => Answered Bruno Chareyre proposed the following answer: Hi, That's how bodies are colored based on their subdomain in the mpi module, it should apply for anything e

Re: [Yade-users] [Question #700924]: soil stucture interaction

2022-03-14 Thread Bruno Chareyre
Question #700924 on Yade changed: https://answers.launchpad.net/yade/+question/700924 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, TriaxialStressController can be used for 2D cases but it still requires that you place 6 walls (in fact boxes), not 4. A

Re: [Yade-users] [Question #700861]: an installation problem

2022-03-11 Thread Bruno Chareyre
Question #700861 on Yade changed: https://answers.launchpad.net/yade/+question/700861 Status: Open => Answered Bruno Chareyre proposed the following answer: That company will have to find out the problem or report it. I don't know that we can fix problems when we are completely bl

Re: [Yade-users] [Question #700889]: Output collsions particles-walls and particle-particle per cycle

2022-03-10 Thread Bruno Chareyre
Question #700889 on Yade changed: https://answers.launchpad.net/yade/+question/700889 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, How do you distinguish a collision from a contact? Bruno -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #700847]: access friction and inelastic collision contributions in the total loss of energy of the system

2022-03-10 Thread Bruno Chareyre
Question #700847 on Yade changed: https://answers.launchpad.net/yade/+question/700847 Status: Open => Answered Bruno Chareyre proposed the following answer: As pointed out by Jan, there is no contact damping in Yade's CundallStrack. If Newton.damping =0 (which I recommend in quastista

Re: [Yade-users] [Question #700830]: Is there any way to generate voronoi tessellation diagram?

2022-03-10 Thread Bruno Chareyre
Question #700830 on Yade changed: https://answers.launchpad.net/yade/+question/700830 Status: Open => Answered Bruno Chareyre proposed the following answer: FlowEngine has more features to visit the graph. Something like this should work (not tested but the needed functi

Re: [Yade-users] [Question #700861]: an installation problem

2022-03-10 Thread Bruno Chareyre
Question #700861 on Yade changed: https://answers.launchpad.net/yade/+question/700861 Bruno Chareyre requested more information: Hi, What's that "cloud computing platform", which OS? How do you install? Bruno -- You received this question notification because your team yade-users is

Re: [Yade-users] [Question #700761]: about measure seepage discharge in triaxial test

2022-03-10 Thread Bruno Chareyre
Question #700761 on Yade changed: https://answers.launchpad.net/yade/+question/700761 Status: Open => Needs information Bruno Chareyre requested more information: > I tried changing flow.permeabilityFactor to a positive value and other values.However,It seems that the data I record is

Re: [Yade-users] [Question #700830]: Is there any way to generate voronoi tessellation diagram?

2022-03-07 Thread Bruno Chareyre
Question #700830 on Yade changed: https://answers.launchpad.net/yade/+question/700830 Status: Needs information => Answered Bruno Chareyre proposed the following answer: Hi, The image [1] was generated semi-automatically with POV-ray, using data generated collected from FlowEng

Re: [Yade-users] [Question #700611]: TwoPhaseFlow - double free or corruption

2022-03-07 Thread Bruno Chareyre
Question #700611 on Yade changed: https://answers.launchpad.net/yade/+question/700611 Status: Open => Needs information Bruno Chareyre requested more information: Oh... but I thought the question was about "large number of particles". Now it's about "packs". what d

Re: [Yade-users] [Question #700761]: about measure seepage discharge in triaxial test

2022-03-03 Thread Bruno Chareyre
Question #700761 on Yade changed: https://answers.launchpad.net/yade/+question/700761 Bruno Chareyre proposed the following answer: > the unit of the value measured by flow.getBoundaryFlux It is in velocity * area. B -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #700611]: TwoPhaseFlow - double free or corruption

2022-03-03 Thread Bruno Chareyre
Question #700611 on Yade changed: https://answers.launchpad.net/yade/+question/700611 Bruno Chareyre requested more information: > Yes Your question states the opposite it seems... Can you be more specific on which number of particles gives the problem and provide a script showing the prob

Re: [Yade-users] [Question #678523]: frictionAngle vs μ(interparticle friction coefficient)

2022-03-03 Thread Bruno Chareyre
Question #678523 on Yade changed: https://answers.launchpad.net/yade/+question/678523 Bruno Chareyre proposed the following answer: Please don't re-use a 3-year old thread for asking a question. B -- You received this question notification because your team yade-users is an answer contact

Re: [Yade-users] [Question #700748]: how to calculate the plastic part of shear displacement in law2-cohesionMoment

2022-03-03 Thread Bruno Chareyre
Question #700748 on Yade changed: https://answers.launchpad.net/yade/+question/700748 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, No, I don't see a simple way to track this "per contact". Energy tracking would give a total for all contacts, not

Re: [Yade-users] [Question #700743]: Errors during step-by-step particle deletion of consolidated specimen

2022-03-03 Thread Bruno Chareyre
Question #700743 on Yade changed: https://answers.launchpad.net/yade/+question/700743 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, I ran your script and I didn't see a problem on yade side (20211216-6185~d81270c~focal1 here). The timestep is stable. It r

Re: [Yade-users] [Question #700611]: TwoPhaseFlow - double free or corruption

2022-02-24 Thread Bruno Chareyre
Question #700611 on Yade changed: https://answers.launchpad.net/yade/+question/700611 Bruno Chareyre requested more information: Indeed. It's a glibc error [1] even if it sounds mechanical ("consolidation"). So you have crashes without MPI and without aggregates when using many partic

Re: [Yade-users] [Question #700617]: core dumped after replacing boundary walls

2022-02-15 Thread Bruno Chareyre
Question #700617 on Yade changed: https://answers.launchpad.net/yade/+question/700617 Bruno Chareyre posted a new comment: > b.shape.extents = b.shape.extents * 10 Perfect answer. Remember that it only works if thickness is null. B -- You received this question notification because your t

Re: [Yade-users] [Question #700611]: TwoPhaseFlow - double free or corruption

2022-02-15 Thread Bruno Chareyre
Question #700611 on Yade changed: https://answers.launchpad.net/yade/+question/700611 Status: Open => Answered Bruno Chareyre proposed the following answer: > still it works for lower number of particles You mean it doesn't crash, right? Even so, I don't see it giving consistent r

Re: [Yade-users] [Question #700617]: core dumped after replacing boundary walls

2022-02-14 Thread Bruno Chareyre
Question #700617 on Yade changed: https://answers.launchpad.net/yade/+question/700617 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, This script will not run with python3. Questions coming to mind, though: - why not defining larger walls in the first place? -

Re: [Yade-users] [Question #700611]: TwoPhaseFlow - double free or corruption

2022-02-14 Thread Bruno Chareyre
Question #700611 on Yade changed: https://answers.launchpad.net/yade/+question/700611 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, This has 0% chances to work. MPI uses a domain decomposition with one yade instance running each subdomain. What happens in y

Re: [Yade-users] [Question #700587]: My fluid-solid coupling script run very slowly

2022-02-11 Thread Bruno Chareyre
Question #700587 on Yade changed: https://answers.launchpad.net/yade/+question/700587 Status: Needs information => Answered Bruno Chareyre proposed the following answer: > flow.meshUpdateInterval=2 This is an enormous workload, it means to rebuild a mesh, a permeability

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