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

help:error of dynamic mesh

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 12, 2010, 04:03
Default help:error of dynamic mesh
  #1
New Member
 
zhuliang
Join Date: Nov 2010
Location: China
Posts: 13
Rep Power: 15
bright181 is on a distinguished road
Hi, my friends:
There is a mad error in my creating of dynamic mesh, the attachment picture show the error postionnly the top face of the bowl go up while other required faces keep stationary.
The upper meshes' character: Hex/Wedge cooper size 3
The lower meshes's characer: Tet/Hybird TGrid size 3
I just want to let the upper past being suppressed when the mesh is move while the lower part hold its shape.
Would you please give me a detail depict of operation process if you have a relative experience on this things.
Thank you for advance.
Best Regards.
Attached Images
File Type: jpg cylinder.jpg (93.5 KB, 10 views)

Last edited by bright181; November 19, 2010 at 01:59.
bright181 is offline   Reply With Quote

Old   November 15, 2010, 02:22
Default
  #2
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41
-mAx- will become famous soon enough
handle your model with layering (if it is not already done)
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   November 18, 2010, 10:04
Default
  #3
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41
-mAx- will become famous soon enough
define the upper surface from red bracket domain as moving wall, and the 2 lower surfaces (one also belongs to green bracket domain) as stationnary.
You also need to define parameters in Meshing option tab for moving and stationnary entities.
Check tutorial 11 - Using Dynamic Meshes
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Old   November 19, 2010, 01:56
Default Hi
  #4
New Member
 
zhuliang
Join Date: Nov 2010
Location: China
Posts: 13
Rep Power: 15
bright181 is on a distinguished road
You means to keep the lower part stationary and move the upper part?
Maybe I want to let the lower part go up along the Z axis,so the the 2 surfaces can not be stationary but move up keeping its shape. Do you have any idea?
bright181 is offline   Reply With Quote

Old   November 19, 2010, 05:20
Default
  #5
Super Moderator
 
-mAx-'s Avatar
 
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41
-mAx- will become famous soon enough
then define upper surface from red bracket domain as stationnary.
the 2 lower surfaces (one also belongs to green bracket domain) as moving with rigid body.
As I can remember you need also to define the green bracket volume as rigid body.
For that you need to define this domain as separate one (in gambit you can define it as another fluid domain : Specify Continuum Types
PS: moving down the upper surface will give same results: it is just a reference stuff
__________________
In memory of my friend Hervé: CFD engineer & freerider
-mAx- is offline   Reply With Quote

Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dynamic Mesh on Pintle type injector. herntan FLUENT 16 September 4, 2020 09:27
Incylinder dynamic mesh with volumetric reaction mas FLUENT 4 May 3, 2012 11:22
dynamic mesh on a hexa grid Manoj Kumar FLUENT 0 August 21, 2007 08:41
Dynamic mesh + grid adapt = Crash! (Files included BillH FLUENT 4 July 24, 2007 16:31
Help: Is it possible to use dynamic mesh model and Valery Ponyavin FLUENT 1 September 20, 2003 15:18


All times are GMT -4. The time now is 08:57.