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

[ICEM] Multiple cell zone creation problem in ICEM

Register Blogs Community New Posts Updated Threads Search

Like Tree1Likes
  • 1 Post By shereez234

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 26, 2018, 07:25
Default Multiple cell zone creation problem in ICEM
  #1
Member
 
ishan
Join Date: Oct 2017
Posts: 78
Rep Power: 9
ishan_ae is on a distinguished road
Hello,
I am trying to simulate aeroacoustics of a blade using the Fwocs-Williams Hawkings model with a “permeable surface” in Fluent. I have made a 2D mesh in ICEM but I am having troubles with defining an additional second cell zone apart from the usual solid or fluid. The zone needs to be such that it covers the regions around the blade and its wake. That said, the zone needs to be of the the same fluid which would be in the entire domain. The numerical domain is rectangular in shape, has pressure-inlet, pressure-outlet, translational periodicity on top and bottom and no-slip walls on the balde. I have tried making a body in ICEM by adding the blocks(using "add to part") around the blade and it’s wake to the created body. Following the usual procedure, I convert it to unstructured mesh and then check for errors. At the interface between the created body and the rest of the mesh, it indicates “missing internal faces” error. It auto-fixes something but I don’t know how and what. I have checked the ICEM guide and this error is legitimate.Even after this error is fixed there are problems while importing the mesh to Fluent. No wonder, on importing the mesh to Fluent it displays the same error and aborts due to critical error. Before this, I have tried to import it without making any bodies and it imported properly. Is there anyway, I can fix this problem manually? I am pretty sure I am missing a step here. I have referred to a number of threads here but they only say create the bodies and that’s it.
ishan_ae is offline   Reply With Quote

Old   February 27, 2018, 08:55
Default
  #2
Senior Member
 
shereez234's Avatar
 
M Sereez
Join Date: Jan 2014
Location: England
Posts: 353
Blog Entries: 1
Rep Power: 13
shereez234 is on a distinguished road
Quote:
Originally Posted by ishan_ae View Post
Hello,
I am trying to simulate aeroacoustics of a blade using the Fwocs-Williams Hawkings model with a “permeable surface” in Fluent. I have made a 2D mesh in ICEM but I am having troubles with defining an additional second cell zone apart from the usual solid or fluid. The zone needs to be such that it covers the regions around the blade and its wake. That said, the zone needs to be of the the same fluid which would be in the entire domain. The numerical domain is rectangular in shape, has pressure-inlet, pressure-outlet, translational periodicity on top and bottom and no-slip walls on the balde. I have tried making a body in ICEM by adding the blocks(using "add to part") around the blade and it’s wake to the created body. Following the usual procedure, I convert it to unstructured mesh and then check for errors. At the interface between the created body and the rest of the mesh, it indicates “missing internal faces” error. It auto-fixes something but I don’t know how and what. I have checked the ICEM guide and this error is legitimate.Even after this error is fixed there are problems while importing the mesh to Fluent. No wonder, on importing the mesh to Fluent it displays the same error and aborts due to critical error. Before this, I have tried to import it without making any bodies and it imported properly. Is there anyway, I can fix this problem manually? I am pretty sure I am missing a step here. I have referred to a number of threads here but they only say create the bodies and that’s it.
Hi;

It took me a while to get what you are trying to say: a few suggestions to improve your way of asking questions (if you don't mind me saying).

-> Try to break your paragraphs into parts so it will be easier for the eye.

-> post some pictures of your efforts.

-> circle problematic regions in those picture

Now, I have seen many people asking this question again and again on how to use multiple fluid zones and interfaces. I have a video here on my channel on how to do this from scratch. Here is a teaser pic attached as well.



Hope it will be helpful.
The video link is: https://youtu.be/-PwFOiGM6MU

Thanks

MS
Attached Images
File Type: jpg Lesson 17 merged.jpg (181.8 KB, 18 views)
wc34071209 likes this.
shereez234 is offline   Reply With Quote

Reply

Tags
fluent 17.0, icem 17


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
Cell Zone Conditions initialization Problem ansys_matt FLUENT 3 October 13, 2014 05:45
[ICEM] Multiple fluide zone in ICEM Hexa Block problem ddqp ANSYS Meshing & Geometry 4 October 9, 2013 11:57
Problem in Cell Zone conditions for Species Transport model CFDP FLUENT 3 March 5, 2013 05:14
Change cell zone index/thread during simulation neilduffy1024 FLUENT 0 January 17, 2011 10:40
Fluent incident radiation problem Michael Schwarz Main CFD Forum 0 October 21, 1999 06:56


All times are GMT -4. The time now is 19:13.