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[ICEM] Help in meshing a 2D Nozzle?????

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Old   November 13, 2009, 07:15
Post Help in meshing a 2D Nozzle?????
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Harry Mandilas
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Hi guys,

I am new in meshing-CFD so here is an easy one for you I guess.. I am trying to mesh a 2D nozzle in ICEM. If anyone is bothered to have a look, I have attached an image of the sequence of steps I followed, together with the final "mesh"..

http://rapidshare.com/files/30637856...Steps.jpg.html

The end result as you can see does not resemble a mesh at all (just a series of lines across nozzle)...

Basically, after creating a bounding box I tried splitting the edges so that I can approximate the actual nozzle geometry before applying the mesh parameters using the curve mesh setup tool.. Using a very similar approach I managed to successfully mesh the same nozzle in 3d at ICEM.. Yet the 2d version seems to be more challenging for me....

I did search this forum for similar threads but did not really find anything of real help...

Any help would be much appreciated,
Thanks in advance!
Attached Images
File Type: jpg Nozzle Steps.jpg (46.0 KB, 113 views)

Last edited by harman79; November 13, 2009 at 07:18. Reason: Incomplete
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Old   November 15, 2009, 17:37
Default Edge params...
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Simon Pereira
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You have not set any mesh sizes. Those "lines across the nozzle" are just long skinny elements. You can adjust the number of elements (the distribution) vertically to have more than one element from top to bottom and to give nice near wall spacing, growth ratio, etc...

Even trying one single Hexa tutorial would show you this critical step (or at least look up "Edge parameters" in the help). The tutorials can be found under "help" in the GUI.

Simon

Last edited by PSYMN; November 15, 2009 at 17:37. Reason: improve...
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Old   November 16, 2009, 03:44
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Simon,

thanks for the quick reply.. Sorted. I though that just setting up the curve meshing parameters for the actual nozzle geometry would be enough. I did not realise that I had to repeat for the blocking.

Thanks for getting me unstuck,
Harry
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Old   November 16, 2009, 09:03
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Simon Pereira
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The first option under premesh params will update the blocking edge params based on the geometry params...

Simon
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Old   November 22, 2009, 23:45
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I recommend you to use Axisymetric solver, the mesh would be smaller and you will solve it faster
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