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[Jan Stránský <question680325@xxxxxxxxxxxxxxxxxxxxx>]

Question #680325 on Yade changed:
https://answers.launchpad.net/yade/+question/680325

Jan Stránský proposed the following answer:
Hello,

> but the spheres will freeze and not compact

please always try to get also numerical evidence of such statements. If
you print position of particles, you will see that they DO move and
compact. Then the right question would be, why do they compact so
slowly.

I you print minimal particle size and O.dt before O.run:
##
print min(b.shape.radius for b in O.bodies)
print O.dt
##
in the "working" case I got
0.00475
4.65403051129e-07
while for the "frozen" case it was
2.93328060983e-05
2.87401630659e-09
so the "frozen" case runs ~200x slower than the "working" case

The solution is to modify the PSD

cheers
Jan

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