Dear ESPResSo developers team and users,
I'm currently trying to run simulation of raspberry-like particle in the flow and if I use virtual particles as a surface beads of raspberry, it gives me
"background_errors 0 {999 force on particle was NAN.} {999 force on particle was NAN.} {999 force on particle was NAN.} {999 force on particle was NAN.} {999 force on particle was NAN.} {999 force on particle was NAN.} "
during the integration cycle. It happens if the distance between the central particle and the virtual ones is greater than ~2, whereas the parameters of the flow look as follows
lbfluid density 1.0 viscosity 0.5 agrid 1.0 tau 0.02 friction 10.0 ext_force 0.001 0.0 0.0;
thermostat lb=1.0
timestep=0.01
Probably some of you have faced this problem before.
Any help in these matters would be greatly appreciated.
Thanks!
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Kind regards,
Aleksei Kabedev