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[ICEM] O-grid to shape the fillet of a turbine

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Old   January 23, 2012, 05:15
Default O-grid to shape the fillet of a turbine
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Hi guys,

i have some serious problems with the fillets of my turbine (<90). I've tried to shape the fillet with an o-grid several times , but without any success. I've attached some pics. Which blocks and which faces do i have to choose to create the blocking on pic 4 (blocking_fillet)? Last two pics shows the blocking and scan plane from a similar turbine.
Thx in advance.

Last edited by energy382; January 25, 2012 at 09:43.
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Old   January 24, 2012, 12:24
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Sijal Ahmed Memon (turboenginner@gmail.com)
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plz attach tin and blocking file
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Old   January 26, 2012, 03:58
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Still not solved my problems at hub/blade (fillet) and gap (between leading edge and heatshield). Could anyone please help me?

I become desperate. I tried it several times without success. Again: i need an o-grid to resolve the fillet between hub and blade and I didn't get managed to block the gap ( maybe the edges of the o-grid in front of the leading edge were not associated in the correct way to the heatshield/stator).

I would be glad to have your help in blocking or just an explanation. Thx guys.

Blocking and tin-files:

http://www.file-upload.net/download-...1/cfd.zip.html




Finally fixed all problems! Premesh looks very nice now.

I will make a detailed report with some pics at the weekend for those, how has similar problems (geometry).


Last edited by energy382; January 26, 2012 at 13:25.
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Old   January 27, 2012, 04:27
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did you make new surfaces and curves where you made the associations, coz when I checked your files , I noticed similar problem, and I am wondering where would you associate the edges?

1 more thing, why did you make the two edges in the tip gap and how did you do it?
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Old   January 31, 2012, 13:09
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Hey!

sorry, it takes me a time to answer your question. With the two edges in the tip gap I created an GGI (nodes didn't match there as you can see). I've splitted vertices and then associated them to the curve. That's the way i made the interface in the middle of the tip.
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File Type: jpg tip_gap_interface1.jpg (96.2 KB, 83 views)
File Type: jpg tip_gap_interface2.jpg (96.3 KB, 63 views)
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Old   January 31, 2012, 13:35
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Quote:
With the two edges in the tip gap
So you had two edges in gap, how did you create them?
Quote:
I've splitted vertices and then associated them to the curve
If You mean that by splitting the vertices we get two edges, then I didn't know it.

Could you explain it bit more, as it is closely related to my field of interest and you have done a fantastic job.
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Old   February 13, 2012, 06:05
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sorry, took me a while to answer your question. I made some screenshots to show, how i made the grid interface on the tip. I hope it's comprehensible.
Attached Images
File Type: jpg interface1.jpg (90.8 KB, 55 views)
File Type: jpg interface2.jpg (92.6 KB, 42 views)
File Type: jpg interface3.jpg (92.4 KB, 47 views)
File Type: jpg interface4.jpg (95.7 KB, 42 views)
File Type: jpg interface5.jpg (95.5 KB, 37 views)
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Old   February 13, 2012, 06:06
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last screenshot
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File Type: jpg interface6.jpg (95.3 KB, 42 views)
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