CFD Online Logo CFD Online URL
Home > Forums > CFX

FSI (negative volume element)

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   April 23, 2007, 05:53
Default FSI (negative volume element)
Flying pigs
Posts: n/a
Hi there

I am currently doing 2 way FSI simulation on the flexible wing, and the deformation of the wing is rather large, which always leads to error in the CFX solver due to negative volume element.

I was wondering, is the re-meshing the only way to solve the problem? Or there is other way I could do? (may be added some mathematical model to prevent the mesh going to negative volume?)

Anyway, thanks for reading my questions.

  Reply With Quote

Old   April 23, 2007, 06:09
Default Re: FSI (negative volume element)
Posts: n/a
Have you tried smaller timesteps and/or playing around with the mesh stiffness?
  Reply With Quote

Old   April 23, 2007, 07:07
Default Re: FSI (negative volume element)
Flying pigs
Posts: n/a
Hi Johnny

I haven't try with the mesh stifness, which I was thinking, it might solve the problem, anyway, I will give a try (because I am just new user to CFX )

anyway, thanks
  Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Turbogrid and Negative volume Ali CFX 12 August 18, 2016 14:31
Dynamic meshing in CFX: (negative volume error) vmlxb6 CFX 6 August 28, 2010 06:43
Control Volume , Finite Volume, Finite Control Volume, Finite Element Method technocrat.prakash Main CFD Forum 1 April 24, 2010 19:24
fluent add additional zones for the mesh file SSL FLUENT 2 January 26, 2008 12:55
Dynamic Mesh, negative volume! ROOZBEH FLUENT 2 June 22, 2006 20:51

All times are GMT -4. The time now is 02:39.