yade-dev team mailing list archive

[Anton Gladky <gladky.anton@xxxxxxxxx>]

I have never seen "hanging particles problem" in YADE.
I always used meshes (facets) for my tasks and I am pretty satisfied with
that, and truly never checked the code, as I never saw a strange particle
behavior between facets and spheres. It "just works".

Recently I just asked in ML developers opinion on that topic and Vaclav
recommended me to use facets instead of boxes.
http://www.mail-archive.com/yade-users@xxxxxxxxxxxxxxxxxxx/msg00315.html
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Anton Gladkyy


2010/1/18 Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>

> What is the current situation in Yade? Particles do not "hang" on facets,
> or you are still implementing meshed surfaces?
> Btw, I remember when I wrote a 2D equivalent ((*) more or less) of facets,
> it needed a way to keep the history of contacts when they were sliding or
> rolling from one facet to an edge, and from the edge to another facet. Is
> there something like this with Yade's facets, or do we create new
> interactions for each new pair? I never looked into that part of the code.
>
> Bruno
>
> (*)
> http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=JENMDT000131000007000689000001&idtype=cvips&gifs=yes
> )
>
>
>  It is a good software with high scalability. Mostly used for geomechanical
>> tasks by Brisbane University in Australia.
>> It uses MPI-schema, what is excellent for clusters.
>>
>> Exceptionally for me, there are 1 bug (
>> https://bugs.launchpad.net/esys-particle/+bug/442881) and 1 unimplemented
>> feature, which keep me out of using it.
>>
>> Anyway, it is good when you have 2 or more opportunity to choose between
>> software.
>>
>> https://launchpad.net/esys-particle
>> ______________________________
>>
>> Anton Gladkyy
>>
>>
>> 2010/1/18 Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx <mailto:
>> bruno.chareyre@xxxxxxxxxxx>>
>>
>>
>>
>>        But there are some bugs which are not allow me to use ESyS for
>>        my tasks.
>>
>>    Could you tell more about the "bugs" in ESyS? I'm interested in that.
>>    I feel like some codes are perfect on the paper but fail when
>>    somebody wants to actually do something with them, partly due to
>>    academic gaps or intrinsic differences between computer science /
>>    engineering science, physics of particles / geomechanics, fluid
>>    mechanics / solid mechanics, dynamic flow / quasi-static
>>    deformation, etc.
>>    In this perspective, Yade has the advantage of being developped by
>>    people using it for research (balance that with drawbacks in terms
>>    of developpement speed and consistency of the design).  Two
>>    exceptions are Olivier Galizzi and Alban Daumer.
>>
>>    Bruno
>>
>>
>>
>>
>>
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>
>
> --
> _______________
> Bruno Chareyre
> Associate Professor
> Grenoble INP
> Lab. 3SR
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