Re: [ESPResSo-users] Lattice Boltzmann External Force

[Stefan Kesselheim]

Hi,

just a quick question.

Am 09.02.2012 um 14:28 schrieb Wolfgang Riefler:

> Implementing this line, I get a much better result, with only a little 
> offset, which is probably due to the discrete boundary.

Why would this change the offset situation? It should only change the magnitude 
of the force, right? For forces that are not incredibly large, everything is 
linear in the applied force, and everything should scale with the force (also 
the transient behaviour). 

Could you give a few more details on your parameters? Viscosity, timestep, 
density, temperature, number of timesteps that you integrate. I did careful 
checks on that, and I do believe that everything should be working fine.

Cheers
Stefan

> 
> Thanks again for your help,
> 
> Wolfgang

Stefan Kesselheim
Institute for Computational Physics
University of Stuttgart
address@hidden