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[ICEM] problem when reading mesh

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Old   April 29, 2013, 06:26
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the file is too big if *.zip, how else can I send it?
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Old   April 29, 2013, 11:34
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ok, I've tried AGAIN.
Now I have another problem of
"Cell Centroid is xc 35.776754 yc 6.767326 zc 0.400559
WARNING: no face with given nodes. Thread 16, cell 10995"
I read on-line that it could be a problem of meshing.

So I opened again the file and got what is on the picture !!! what is it????
I don't know anymore what to do with ICEM !!!!
Everytime I have a different kind of error. Are there some bugs or I don't know?
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File Type: zip icem.zip (40.6 KB, 6 views)
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Old   April 29, 2013, 12:26
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@yorelchr: topology is not great.
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Old   April 29, 2013, 12:38
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what do you mean? what do all these blue lines mean?
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Old   April 29, 2013, 12:45
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blue lines show internal edges. You have made several y blocks even in the areas where they are not needed
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Old   April 29, 2013, 14:39
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I have just done Y-blocks for the part down the geometry and the upper-right part. I have done that maybe 30 times, always starting from the geometry (not canceling existing blocks) and it is the first time I get that.
I am really getting mad. It's been exactly 2 weeks I've been trying and I know now that everytime, I will have a different error (interior parts seen as wall, error on cells without mesh like the previous one, mesh not read for I don't know which reason...).
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Old   April 29, 2013, 15:35
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Quality > 0.8
Angle > 45

I didn't check it in fluent. Just finished blocking and uploaded here. Please check blocking and let me know if something is missing...
https://dl.dropboxusercontent.com/u/...nozzle_Far.zip





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Old   April 29, 2013, 15:43
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Old   April 29, 2013, 16:13
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Thank you very much for this!
I see that I was doing wrong with my Y-blocks.
There were 2 problems when I generated the mesh, maybe because I have not all the files. For one it was ok, I could fix it. For the other, I send you a picture of it.
And I was wrong also since I was trying to avoid the small cells (coming from the beginning) all through the chamber.
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File Type: zip toto.zip (20.0 KB, 1 views)
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Old   April 29, 2013, 17:13
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Corrected files...


https://dl.dropboxusercontent.com/u/...-2013_Far2.rar

PS: Wait at least one hour so that files get uploaded on dropbox.
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Old   April 29, 2013, 17:52
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I can't get the files, I have :
Error (404)
We can't find the page you're looking for. Check out our Help Center and forums for help, or head back to home.
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Old   April 29, 2013, 18:54
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now check link. it is working
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Old   April 30, 2013, 02:45
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Far, in this triangle shaped geometry, where you have the three blocks: Is there a way to tell ICEM to make the angle of the three edges in the middle equal (each 120)? Or do you have to estimate it by hand?
a002x.jpg
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Old   April 30, 2013, 03:03
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It is done by ICEM. If you adjust everything in place and make the Y block, each angle would measure 120. But once you have changed it, there is no way to ensure it.
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Old   May 3, 2013, 03:42
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Quote:
Originally Posted by Far View Post
now check link. it is working
Hi Far,

sorry for replying so late but I had to work on something else. I'm now back on this job.
Thank you very much for what you have posted. There is just a problem with periodicity. I've "rebuild" the parts (lato_sx and lato_dx) but the problem remains. So yesterday, AGAIN, I tried by myself and this time all was ok, at least, it seemed. Fluent read without problem, ok also for periodicity, but I encountered a new problem (!!!). I send you the picture. When I go back to ICEM, in the menu on the left, under mesh, I have some shells and the problem seems to be there. However I'm running the case with Fluent and it seems ok but I don't know if the results will be influenced by this...the problem lies at the main inlet : the inlet mesh takes a part of the wall mesh, the wall-ogiva takes a part of wall-inlet...I don't know why I have this situation. When running the case, I import profile at the inlet, so, only cells in the profile are concerned, so maybe the calculations can be ok, but still....why?
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Old   May 3, 2013, 03:46
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everything seems alright. I am not able to understand where problem lies
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Old   May 3, 2013, 05:16
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well, maybe I was not really clear in my explanations :-)
the inlet should be just the vertical "blue" part and in fact, when displaying it, I also have a part of the wall.
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Old   May 3, 2013, 12:23
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delete that block only.

create new block with eight vertices. four are there, and click on four locations approximately.

Associate edges to curves and vertex to point and you are done.
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Old   May 3, 2013, 14:26
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ok, I'll try that, I'm just afraid that maybe the face between the 2 bocks will be seen as wall in Fluent, already had this problem ... I'll tell you
Thanks again!
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Old   May 3, 2013, 14:33
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No , it will not happen. don't make any face to surface association
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