|Subject:||Re: [ESPResSo-users] Particle in Fluid, periodic boundary conditions|
|Date:||Fri, 28 Nov 2014 11:07:57 +0000|
I remember spotting something like this in one of the older versions of the master, but I tried to find it and could not reproduce the bug with the latest version, which one are you using?
- I am using version 3.3.0, so the latest I guess
Yes, looks like something is at odds with the periodicity here. Can you
- Attached you will find the z-velocity as a function of the x-position (by accident I named it y-position). The velocity of the particle looks awkward when it gets close to the boundary (marked with a black line). I furthermore performed a simulation, where I checked the interpolated velocities of the fluid at the origin of the particle. The v_z component of the fluid looks also awkward close to the periodic boundary. Even if I don’t put particles in the fluid, I get a strange velocity of the fluid close to the periodic boundary. I was wondering, if the periodic boundary condition for the LB fluid has some bug. I played around a bit with the variable tau, but it still shows that strange behavior close to the boundary.
Attached I put some graphs of the velocity and the forces acting on the particle as a function of the position in the channel as well as the interpolated velocities of the fluid. Maybe that helps people spotting the error.
Thanks in advance.
Von: espressomd-users-bounces+address@hidden [mailto:espressomd-users-bounces+address@hidden
Im Auftrag von Joost de Graaf
On 24 November 2014 at 19:35, Ulf Schiller <address@hidden> wrote:
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