noob vs non-mesh wall

Submitted by tdl on Mon, 03/05/2012 - 16:04

Dear all,
I could not find any info on how to record to dump file
moving walls defined with:
fix myoscillatingwall all wall/gran/hertz/history 3 0 zplane 0.0 NULL 1 wiggle z 0.001 0.02
I had supposed that since I only need a simple movement
like this I could skip building a mesh, but how can I
export the wall position (to read it in paraview)?
Note that the wall works as intended, the particles
correctly interact with it.
Thank you,
Alessandro

Forums:

ckloss's picture

ckloss | Tue, 03/06/2012 - 10:49

see dump stl and dumt mesh/gran/VTK - have a look at the moving mesh example

Cheers, Christoph

tdl | Tue, 03/06/2012 - 14:27

Dear Christoph,
thank you again for your help.

What I did not get was that by calling "dump stl" you could save the data even if you did not import an external mesh.
This is still not working...

I also had to find out that you cannot dump everything in one file, but you are required to write different files for each time step (BTW, why this is required?).

Anyways now it works using meshes, I just need to have liggghts compile on the cluster now ;-)
And create a mesh...
Thank you again,
Alessandro

ckloss's picture

ckloss | Tue, 03/06/2012 - 15:02

>>What I did not get was that by calling "dump stl" you could save the data even if you did not import an external mesh.
correct, this works only for an STL mesh, you cant viz a plane wall. but it's easy to make a plane out of two triangles

Christoph

Philippe's picture

Philippe | Tue, 03/06/2012 - 15:19

Dear Alessandro,

it is required to write a single STL file for each timestep beacuse the STL standard does not support multiple timesteps in one file.

greetz
Philippe