ESyS-Particle

gridSize and gengeo

Asked by Toketo

Hello guys!
I'm trying to do the gengeo_example2.py. My minRadius is 1.0mm and maxRadius is 1.1 mm. I have set my gridSize to be 2.5*maxRadius; however an error would occur, it would result to MemoryError. Why? What is the purpose of gridSize?

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SteffenAbe (s-abe) said : 		#1

Hi Toketo,

which version of gengeo did you use?
I can't reproduce the problem with a current (r.125) version of gengeo. Am I understanding you correctly that the only changes you did in gengeo_example2.py are setting maxRadius=1.1 (for example by changing line 18) and minRadius=1.0 (for example by changing line 52) ?
N.B. If I'm doing this, a model is produced, but the packing has an extremely high porosity (~56%) and mainly consists of loose particles. Reason for this is that the packing algorithm doesn't work well for narrow particle size ranges (r_max:r_min << 2.5).

The "gridSize" parameter is the grid spacing of the Verlet table which is used for the internal neighbor search when inserting particles.

Steffen

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