CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > ANSYS Meshing & Geometry

[ICEM] HEXA mesh

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

Reply
 
LinkBack Thread Tools Display Modes
Old   July 25, 2012, 05:38
Default HEXA mesh
  #1
New Member
 
Rémi Issac
Join Date: Jul 2012
Posts: 6
Rep Power: 4
freedomman is on a distinguished road
hello everyone,
I wanna figure out the hexa mesh of the geometry in attach, as you can see in the blk document, I try to dig out a little cuboid in the center. But I always meet the problem of Volume Orientation who is not able to be fixed, what I do is just delete those bad nodes. Then when I export this mesh to Fluent, it mentions Aborted due to critical error, non of the signs else.
Could you please take a look at of the blk where my mistakes are, what I can do now? cause I'm quite new in using ICEM and I spent pretty much time on this
Thanks a lot
Attached Files
File Type: zip reblk 9.zip (13.4 KB, 13 views)

Last edited by freedomman; July 26, 2012 at 10:15.
freedomman is offline   Reply With Quote

Old   July 25, 2012, 07:53
Default
  #2
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,906
Blog Entries: 6
Rep Power: 38
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
I see many surfaces and curves which I think are unnecessary. Are you sure these surfaces and curves are necessary or only the centre cuboid and outer boundaries?
Far is offline   Reply With Quote

Old   July 25, 2012, 08:35
Default
  #3
New Member
 
Rémi Issac
Join Date: Jul 2012
Posts: 6
Rep Power: 4
freedomman is on a distinguished road
I was trying to give different mesh sizes to each part, but what is necessary is only the contour with the centre cuboid


Quote:
Originally Posted by Far View Post
I see many surfaces and curves which I think are unnecessary. Are you sure these surfaces and curves are necessary or only the centre cuboid and outer boundaries?
freedomman is offline   Reply With Quote

Old   July 26, 2012, 10:22
Default
  #4
New Member
 
Rémi Issac
Join Date: Jul 2012
Posts: 6
Rep Power: 4
freedomman is on a distinguished road
I modified the blocking and move the bottom vertices of the cuboid, then I obtained a more flat angle for the sloping part . (as attached in main post)
Now there is no Volume Orientation problem any more, but when I export this new mesh to Fluent, it rejected with the same reason "Aborted due to critical error".
I can't find where the problem might be, could you please help me?

Last edited by freedomman; July 26, 2012 at 10:38.
freedomman is offline   Reply With Quote

Old   July 27, 2012, 10:09
Default
  #5
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,906
Blog Entries: 6
Rep Power: 38
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
Done........ There is some trick in the blocking.

1. Merge vertices
2.Creation of Y-block
3. Another split for the dead block
4. Conversion the two blocks outside the geometry into dead block

PS: I have deleted all unnecessary curves, points and surfaces.













Attached Files
File Type: zip reblok3_Far.zip (17.0 KB, 12 views)
Far is offline   Reply With Quote

Old   July 27, 2012, 10:27
Default
  #6
New Member
 
Rémi Issac
Join Date: Jul 2012
Posts: 6
Rep Power: 4
freedomman is on a distinguished road
Many thanks, Far
I'll read it now
freedomman is offline   Reply With Quote

Old   July 27, 2012, 10:29
Default
  #7
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,906
Blog Entries: 6
Rep Power: 38
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
please uncheck the following parts (if they are enabled):

dead, solid and VORFN
Far is offline   Reply With Quote

Old   July 30, 2012, 11:42
Default
  #8
Senior Member
 
Join Date: Mar 2011
Location: Germany
Posts: 414
Rep Power: 11
cfd seeker is on a distinguished road
hi Far
What is the need of the dead block? have you associated some of its vertices with the geometry? and how it is separated from the geometry so that its not part of the mesh? Thanks

Regards
cfd seeker is offline   Reply With Quote

Old   July 30, 2012, 14:04
Default
  #9
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,906
Blog Entries: 6
Rep Power: 38
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
One picture is equal to thousand words and I guess one video is equal to thousand pictures. So here is the video for queries you have just asked

http://www.youtube.com/watch?v=ys1tO...ature=youtu.be
Far is offline   Reply With Quote

Old   July 30, 2012, 17:04
Default
  #10
New Member
 
Rémi Issac
Join Date: Jul 2012
Posts: 6
Rep Power: 4
freedomman is on a distinguished road
great............thanks
freedomman is offline   Reply With Quote

Old   July 30, 2012, 18:38
Default
  #11
Far
Super Moderator
 
Far's Avatar
 
Sijal Ahmed Memon (turboenginner@gmail.com)
Join Date: Mar 2009
Location: Islamabad Pakistan
Posts: 3,906
Blog Entries: 6
Rep Power: 38
Far will become famous soon enoughFar will become famous soon enough
Send a message via Skype™ to Far
Quote:
Originally Posted by cfd seeker View Post
hi Far
What is the need of the dead block? have you associated some of its vertices with the geometry? and how it is separated from the geometry so that its not part of the mesh? Thanks

Regards
changing the material is same as when you delete the block and it goes to VORFN, therefore it disconnects itself from remaining mesh. When you uncheck that material from parts list it is no more part of active mesh (name does not matter, you can rename dead to live or even 007)
Far is offline   Reply With Quote

Old   August 1, 2012, 11:04
Default
  #12
Senior Member
 
Join Date: Mar 2011
Location: Germany
Posts: 414
Rep Power: 11
cfd seeker is on a distinguished road
Quote:
Originally Posted by Far View Post
changing the material is same as when you delete the block and it goes to VORFN, therefore it disconnects itself from remaining mesh. When you uncheck that material from parts list it is no more part of active mesh (name does not matter, you can rename dead to live or even 007)
millions of thanks for the video and live, dead and 007 combination is itself deadly and suspicious :P
cfd seeker 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
Moving mesh Niklas Wikstrom (Wikstrom) OpenFOAM Running, Solving & CFD 122 June 15, 2014 06:20
3D Hybrid Mesh Errors DarrenC ANSYS Meshing & Geometry 11 August 5, 2013 06:42
[ICEM] Generating Mesh for STL Car in Windtunnel Simulation tommymoose ANSYS Meshing & Geometry 48 April 15, 2013 04:24
[ICEM] export hexa mesh to fluent Wieland ANSYS Meshing & Geometry 37 January 23, 2013 04:27
[ICEM] Hexa Mesh Smoothing Jules ANSYS Meshing & Geometry 6 December 4, 2010 19:00


All times are GMT -4. The time now is 17:26.