Question #682095 on Yade changed:
https://answers.launchpad.net/yade/+question/682095
Status: Open => Answered
Jan Stránský proposed the following answer:
Hi Miguel,
> the model runs very slow with the real PSD
could you post the values you use?
The critical time step depends on particle size, its density/mass and stiffness
t_cr = R * sqrt(density/young) [1]
the smaller particles, the smaller critical time step, the smaller simulation.
Real PSD could contain very small particles.
some options:
- artificially "cut" the PSD, not including the smallest particles
- increase mass of the smallest particles to increase critical time step
(google selective mass scaling, advanced mass scaling or such).
cheers
Jan
PS: as it is quite different question than the original one, next time
please open a new question [2]
[1] https://yade-dem.org/doc/formulation.html#stability-considerations
[2] https://www.yade-dem.org/wiki/Howtoask
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