moving mesh

raguelmoon's picture
Submitted by raguelmoon on Mon, 12/13/2010 - 17:34

Hi,
Why I can not dump correctly the stresses on moving mesh? How frequent should I dump? Can I dump like this frequency :
dump dump all mesh/gran/VTK 1 dump*.vtk stress cad2

Thanks in advance,
Ram

ckloss's picture

ckloss | Mon, 12/13/2010 - 18:37

>>Why I can not dump correctly the stresses on moving mesh?
What do you mean by that?

>>Can I dump like this frequency : dump dump all mesh/gran/VTK 1 dump*.vtk stress cad2
Sure

Christoph

raguelmoon's picture

raguelmoon | Tue, 12/14/2010 - 10:44

Hi,
I mean that i can not find change in stress profile when i move the mesh(CAD).
fix cad all mesh/gran/stressanalysis stl/int.stl . . .
...
fix movecad all move/mesh/gran linear 0.1 0.0 0.0 cad
....
dump int all mesh/gran/VTK 10 dump*.vtk stress cad
....
...
static mesh works fine....
Thanks,
Ram

Ram

ckloss's picture

ckloss | Tue, 12/14/2010 - 12:54

Could you elaborate a bit more on what you are simulating - otherwise it's impossible to say?

Christoph

raguelmoon's picture

raguelmoon | Tue, 12/14/2010 - 14:17

Hi,
I have one spherical mesh (wall) moving with constant velocity in the static granular bed. I want to calculate stresses on that mesh due to granular particles.
Thanks,
Ram

Ram

ckloss's picture

ckloss | Tue, 12/14/2010 - 15:55

It depends on the flow regime if you see wall stresses when dumping ocasionally . Are there are long-lasting particle wall contacts in your simulation?

Christoph