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[Jan Stránský <question404417@xxxxxxxxxxxxxxxxxxxxx>]

Question #404417 on Yade changed:
https://answers.launchpad.net/yade/+question/404417

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hi Amir,
you have to add existing particles to SpherePack, otherwise it does not
know about other particles:

######################## script 1 - save simulation
from yade import pack
sp = pack.SpherePack()
sp.makeCloud((0,0,0),(10,10,10),1)
sp.toSimulation()
O.save('pip0.yade')
########################

######################## script 2 - loads simulation and correclty use
SperePack
from yade import pack
O.load('pip0.yade')
# adds all existing particles
sp = pack.SpherePack([(b.state.pos,b.shape.radius) for b in O.bodies])
print len(O.bodies)
sp.makeCloud((0,0,0),(10,10,10),0.1,num=100)
O.bodies.clear() # important !!, otherwise there will be existing particles
twice
sp.toSimulation()
print len(O.bodies)
########################

cheers
Jan


2016-11-27 1:23 GMT+01:00 amir <question404417@xxxxxxxxxxxxxxxxxxxxx>:

> New question #404417 on Yade:
> https://answers.launchpad.net/yade/+question/404417
>
> Hello,
>
> I need to generate a specific number of small particles inside the empty
> spaces of a created loose pack with bigger spheres. The geometry of the
> loose pack was created in a separated file and it is loaded at the begging.
>
> O.load('pip0.yade')
>
> sp = pack.SpherePack()
> sp.makeCloud((0,0,0),(0.01,0.01,0.01),rMean=.0001,num=100)
> sp.toSimulation()
>
> The problem is that small spheres are generated over existing particles
> and it results in a kinda explosion while there is enough empty space to
> embed new particles.  I was wondering if you could help me to solve this
> problem.
>
> Regards,
> Amir
>
>
>
>
>
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