How to determine convergence?

Submitted by hemezz on Tue, 10/18/2022 - 09:02

Hello all,

I am a student who is very new to using LIGGGHTS, but I'm building a simulation of packed particle flow over a surface to study abrasion of that surface. Since the surface is uneven, the flow of particles isn't always laminar, and in some regions the particles may flow faster than in others. I'm wondering if anyone can tell me how to determine when the simulation has reached convergence - in other words, how do I determine how many timesteps are "enough?"

My apologies for the slightly abstract question, but any advice you may be able to provide is much appreciated.