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-   -   Moving mesh problem (http://www.cfd-online.com/Forums/fluent/72353-moving-mesh-problem.html)

Geon-Hong February 3, 2010 02:43

Moving mesh problem
 
I tried to analyze a shrouded propeller with moving mesh.

I tested FLUENT 6.3 under both x64 CentOS Linux and WinXP professional edition(32bit).

After I set up the problem to solve it with moving mesh, I checked the grid but no problem was occurred.

However, when I started to iterate with unsteady solver, then I encountered following error messages...

Code:

WARNING: non-positive volumes exist.

divergence detected in AMG solver: pressure correction

Primitive Error at Node 5: floating point exception

Why this happened? :confused: Please somebody help me...TT

I also tried to solve the problem with same setting but stationary mesh, there was no problem like this at all.

When I set an moving mesh for an open propeller, there was no problem too.

Why this happened and what should I do?

mas February 3, 2010 22:09

for the non-positive volumes problem, you should check your remeshing settings, eg. min/max length scale and size remesh interval.

ekakavand February 7, 2010 00:44

AMG solver
 
Hi Geon

did you solve your problem? I countered with this error too, I change factors of solve but i do not get results.

thanks in advance.
elahe

Geon-Hong April 5, 2010 03:24

Dear ekakavand

Just made grid again and now I have no problem with my computation.

Sincerely,
Geon-Hong


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