Yade

Which kind of default distribution in makeCloud

Asked by Leonard

Hello,

When I use makeCloud such as:

# sp.makeCloud(mn,mx,-1,0.3333,num_spheres,True, 0.95,seed=1)

I wonder which kind of distribution of the particle size is in the range ((1-rRelFuzz)*rMean, (1+rRelFuzz)*rMean). Even distribution or normal distribution, or something else? I checked in [1] but I didn't find an answer.

[1]https://github.com/yade/trunk/blob/master/examples/agglomerate/makeCloud.py

Best regards,
Leonard

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Jan Stránský
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Best Jan Stránský (honzik) said : 		#1

uniform
https://gitlab.com/yade-dev/trunk/blob/master/pkg/dem/SpherePack.cpp#L255
cheers
Jan

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Leonard (z2521899293) said : 		#2

Thanks Jan Stránský, that solved my question.

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Bruno Chareyre (bruno-chareyre) said : 		#3

For the record: the random generator is using a boost filter and therefore changing to a different distribution could be done simply by selecting another filter here[1].
OTOH it is not strictly needed since the function also accepts a discrete distribution function.
Bruno

[1] https://gitlab.com/yade-dev/trunk/blob/d50f2eb069b628868506d3e680a5bca877495fb4/pkg/dem/SpherePack.cpp#L126

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Robert Caulk (rcaulk) said : 		#4

For completeness, the doc contains a good description of how most yade functions work [1].

[1]https://yade-dem.org/doc/yade.pack.html#yade._packSpheres.SpherePack.makeCloud

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Jérôme Duriez (jduriez) said : 		#5

Also note that referring to github as in your initial post is no longer relevant to understand current Yade.
Yade development is now reflected on gitlab.com