particles run off

Submitted by mytxii on Tue, 05/26/2015 - 09:55

Hey guys,

I try to simulate a channel with a lot of particles. The simulation runs without any errors, but the particles run off while arriving the wall.
Is there a command which preserves the particles on walls ?

Thank you

EDIT:
I found something in the forum that the youngsModulus has to be high enough and the timestep should be low.

The comments in my in.liggghts - file are:
fix m1 all property/global youngsModulus peratomtype 5.e6 210.e9
fix m2 all property/global poissonsRatio peratomtype 0.45 0.45
fix m3 all property/global coefficientRestitution peratomtypepair 2 0.1 0.1 0.1 0.1
fix m4 all property/global coefficientFriction peratomtypepair 2 0.2 0.175 0.175 0.5

timestep 0.0000001

Is there any mistake ??

Forums:

mytxii | Mon, 06/08/2015 - 10:10

Okay, I've found a solution.
The mesh of the blockDict file (CFD) was much to rough so that there was a coupling mistake while simulating.
Now it works.