CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > FLUENT

dynamic mesh on a hexa grid

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

Reply
 
LinkBack Thread Tools Display Modes
Old   August 21, 2007, 07:42
Default dynamic mesh on a hexa grid
  #1
Manoj Kumar
Guest
 
Posts: n/a
Hi Everyone

I am trying to simulate motion of a ship using dynamic mesh feature. The domain has been discretized using hexa mesh.

Mesh smoothness on all shapes have been activated using following text command-

/define/models/dynamic-mesh-controls/smoothing-parameter/spring-on-all-shapes?yes

The problem I am facing is that, the above text command doesn't takes care of mesh smoothness on the plane of symmetry, though it ensures smooth internal volume mesh.

Mesh on the plane of symmetry : http://img406.imageshack.us/my.php?i...ymmetrypj8.png

Mesh on an internal plane parallel to the plane of symmetry: http://img515.imageshack.us/my.php?i...nteriorbp9.png

Please help.

Thanks,

Manoj
  Reply With Quote

Old   August 23, 2007, 01:42
Default Re: dynamic mesh on a hexa grid
  #2
mAx
Guest
 
Posts: n/a
i wouln't work with smooth. Thus you have an hex grid, so I would use the layering feature. it is quite simple.

  Reply With Quote

Old   August 23, 2007, 08:08
Default Re: dynamic mesh on a hexa grid
  #3
Manoj Kumar
Guest
 
Posts: n/a
In my case the moving grid is translating as well as rotating. How do I implement layering feature.

http://img406.imageshack.us/my.php?i...ymmetrypj8.png

  Reply With Quote

Old   August 24, 2007, 01:18
Default Re: dynamic mesh on a hexa grid
  #4
mAx
Guest
 
Posts: n/a
the layering feature is available under define/dynamic mesh/parameters enable the layering option under mesh method.

for the rotatition motion, I don't know exactly how is exactly your geometry, but I assume you can work with sliding mesh
  Reply With Quote

Old   August 8, 2010, 08:28
Default How to activate"spring-all-shapes"?
  #5
Member
 
ahmad
Join Date: Jul 2010
Posts: 57
Rep Power: 7
almostafa67 is on a distinguished road
hi dear all...
i faced an error message,negative cell volume detected,i think if i activate spring-on-all shapes this error does show again,but i do not know hoe to activate it in ansys 12.0,
any help will be appreciated...
almostafa67 is offline   Reply With Quote

Reply

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
[ICEM] export hexa mesh to fluent Wieland ANSYS Meshing & Geometry 37 January 23, 2013 04:27
snappyHexMesh won't work - zeros everywhere! sc298 OpenFOAM Native Meshers: snappyHexMesh and Others 2 March 27, 2011 21:11
Dynamic mesh - structured mesh mrestrepo30 FLUENT 0 June 3, 2009 15:40
grid partition AND dynamic mesh adaptation !!!!!!! bohis FLUENT 0 January 16, 2009 04:00
How to mesh the 1st grid point lakeat OpenFOAM Meshing & Mesh Conversion 1 October 8, 2007 07:13


All times are GMT -4. The time now is 12:01.