CFD Online Logo CFD Online URL
Home > Forums > STAR-CCM+

Overset MESH problem DFBI 6DOF

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

LinkBack Thread Tools Display Modes
Old   October 1, 2013, 12:25
Default Overset MESH problem DFBI 6DOF
New Member
alessandro antonini
Join Date: Sep 2013
Posts: 1
Rep Power: 0
Ale85 is on a distinguished road
hello everybody , this is my first post.

I read several posts about the problem occuring with DFBI and Overset mesh, but I could not find any answer to my problem.
I would like to simulate a floating body with a complex geometry under the action of a regular wave.
I follow the tutorial about the overset mesh but I still have a problem.
I generated two regions (background and overset), with a overlap block in order to have the same order of magnitude about the cells of the background and overset as in the tutorial. My problem is: when I run the simulation, the mesh changes. After the generation of the mesh, it seems to be good (Fig. 1), but when I run the simulation the mesh changes, ad only the overset region is shown (Fig. 2).
Another thing that I suppose to be wrong is: when I tried to visualize both different regions I got a problem. Shifting the overset region out to the ackground in order to examinate it I discovered that only the symmetry boundary is shown as overset region(Fig. 3 & Fig. 4).

I followed the tutorial but I am not sure about the block of overset and background, should I subtract the overset block domain to the background block domain?
I also generated the overset interface as in the tutorial, right click on both regions>generate interface>overset regions.

If any one could give me some informations or take a look to the file simulation I would be glad.

Attached Images
File Type: jpg Fig1.jpg (53.5 KB, 39 views)
File Type: jpg Fig2.jpg (41.7 KB, 33 views)
File Type: jpg Fig3.jpg (47.7 KB, 35 views)
File Type: jpg Fig4.jpg (44.9 KB, 31 views)
File Type: jpg OVERSETandBackground.jpg (53.7 KB, 36 views)
Ale85 is offline   Reply With Quote


dfbi, overset

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] ICEM Structured Mesh Problem OMJT ANSYS Meshing & Geometry 3 March 22, 2013 11:06
[GAMBIT] SOFC crossflow mesh possible problem??? epc1 ANSYS Meshing & Geometry 1 February 4, 2013 02:57
snappyHexMesh won't work - zeros everywhere! sc298 OpenFOAM Native Meshers: snappyHexMesh and Others 2 March 27, 2011 21:11
Dynamic Mesh Problem. Tom Clark FLUENT 9 July 7, 2010 07:56
unstructured vs. structured grids Frank Muldoon Main CFD Forum 1 January 5, 1999 11:09

All times are GMT -4. The time now is 13:15.