CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Running, Solving & CFD

overset grid example

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 19, 2017, 10:36
Default overset grid example
  #1
New Member
 
Rovera Alessandro
Join Date: Nov 2010
Location: Dronero (CN) Piemonte Italy
Posts: 6
Rep Power: 9
teofil is on a distinguished road
In these days I tried some of the new overset grid functionality of OF v1706.
I just modified a little bit the overInterDyMFoam floatingBody example.
I increased the water coloumn height and I remove all constraint in the dynamicMeshDict and rerun the case.
I found some strange behaviour for the water. In some instant the water simulation stop while the solid object still floating. After some time the water restart to be computed and then it stopped again.
Could someone explain what is the meaning of such strange results?
Have a look to the attached video.

Many thanks, ALex
Attached Files
File Type: gz floating.avi.gz (95.1 KB, 42 views)
teofil is offline   Reply With Quote

Old   November 1, 2017, 01:11
Default
  #2
New Member
 
Gino Parisella
Join Date: Mar 2017
Location: Perth, WA, Australia
Posts: 8
Rep Power: 2
ginop is on a distinguished road
Hi Alessandro,
did you figure out what was the issue?
I am keen to hear from you as I do see some funny behavior in the floatingBody tutorial too, simply changing domain size.
Regards,
Gino
ginop is offline   Reply With Quote

Old   November 1, 2017, 05:03
Default
  #3
Senior Member
 
matej forman
Join Date: Mar 2009
Location: Brno, Czech Republic
Posts: 133
Rep Power: 10
matejfor is on a distinguished road
Hi Alessandro,

I would identify these strange moments in time and check the log from the simulation to see whether the equations were solved and converged. Maybe (fabulating) the solver somehow figured out the alpha is converged and there is no need for update.

Please give more details about the strange moments.

Matej
matejfor is offline   Reply With Quote

Reply

Tags
overset mesh

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
[Star-CCM+ v9] Dynamic Overset Mesh basic problem johncoffey STAR-CCM+ 5 June 17, 2014 14:14
Overset Mesh error : no startcell found ! Cris ZC STAR-CCM+ 2 June 5, 2014 08:53
how to get the overset grid florencenawei Main CFD Forum 0 April 14, 2009 05:17
overset grid??? Dave Main CFD Forum 0 February 14, 2005 12:50
Grid Quality and the Solution Faraz Main CFD Forum 4 January 10, 2000 19:18


All times are GMT -4. The time now is 17:13.