CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   Dynamic mesh problem (http://www.cfd-online.com/Forums/fluent/120461-dynamic-mesh-problem.html)

rohit.jain092 July 7, 2013 23:51

Dynamic mesh problem
 
2 Attachment(s)
*URGENT*
Hi guys
I am trying to generate 2D waves in fluent using an oscillating wall.
But after 15 odd iterations, it gives an error of negative volume.

I have attached the pictures of mesh before and after the calculation.
Can anybody please tell me if there is anything wrong with my mesh or there is some problem in the setup.
Thank you

rohit.jain092 July 8, 2013 00:25

And currently I have created only one dynamic zone i.e. the moving wall. I am using the only the layering option.

poya0070 September 7, 2013 13:14

negative volume
 
about this problem i study in fluent lecture that must be to have a skewness less than 0.7 or acceptable(less than 0.9-0.95, i dont know more).
but in my project resolve this notice and problem yet appear(Although in more time step) and in preview mesh motion the quality orthogonal after several time step is less than 0.05. and then error ......

what setting in remeshing and smothing is required to resolve this problem ?


All times are GMT -4. The time now is 00:09.