# [ICEM] Geometry Problems - Cone nozzle

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October 23, 2013, 08:57
Geometry Problems - Cone nozzle
#1
Member

Join Date: Apr 2012
Posts: 63
Rep Power: 5
Good Morning

I'm generating one unstructured mesh in ICEM.

The process:

-- Import from CATIA v5

--Density Box around the geometry

--Seed: 4096 / robust Octree / sizes: {geometry 12} {fluid: 1024} {FF: 4096}/ prism layer: default settings

--generate

--check mesh

--Quick Delaunay

-- export fluent

The problem is that the geometry doesn't seem perfect when I'm pos-processing it. Is that a problem with the unstructured mesh ?

The picture shows it:

thanks !
Attached Images
 DISTURB.jpg (48.0 KB, 17 views) dd.jpg (103.6 KB, 22 views)

Last edited by leo_NM; October 23, 2013 at 08:59. Reason: Images

 October 24, 2013, 22:09 #2 Senior Member   Stuart Buckingham Join Date: May 2010 Location: United Kingdom Posts: 267 Rep Power: 16 For such a simple geometry you could easily use patch dependant or structured. If using structured, the blocking topology for this is pretty straightforward. Stu __________________ http://bc247.wordpress.com

 October 24, 2013, 23:51 #3 Super Moderator     Sijal Ahmed Memon (turboenginner@gmail.com) Join Date: Mar 2009 Location: Islamabad Pakistan Posts: 3,946 Blog Entries: 6 Rep Power: 39 On ansys portal you can find the blocking files for this case along with step by step guide (three different approaches depending on the angle of cone).

 November 1, 2013, 09:18 #4 Member   Join Date: Apr 2012 Posts: 63 Rep Power: 5 Thank you guys ! I divided the geometry nozzle in parts and put small sizes for the critical parts. The mesh sizes were too big for that part of the geometry so the elements were distorcing the nozzle. I'm trying to generate the structural grid as suggested too. It is simpler than I thought it would be. Thanks !!

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