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-   -   [ICEM] ICEM Hexa_Airfoil with 2 sharp edges blocking? (http://www.cfd-online.com/Forums/ansys-meshing/112066-icem-hexa_airfoil-2-sharp-edges-blocking.html)

Catthan January 21, 2013 12:09

ICEM Hexa_Airfoil with 2 sharp edges blocking?
 
Dear all,

I have been trying to mesh this airfoil in 2D after I did the youtube tutorial a couple of times.

This blade is from an automotive cooling fan.

Here's the profile

http://i1219.photobucket.com/albums/...ps63c53aa2.jpg


Here it is after the O-grid and splits

http://i1219.photobucket.com/albums/...ps73131466.jpg

Then I thought I could just collapse both edges and blocks at the tips similar to the sharp trailing edge from the tutorial.

I did and I'm getting this..

http://i1219.photobucket.com/albums/...ps05eaa117.jpg


From the last picture, the 2 airfoil sides merge to one after I collapse both blocks at the edges..
Am I missing something or is what I am trying to do fundamentally wrong?

I would appreciate some help..

Thanks,
T

Bharatt January 21, 2013 12:19

Hello catthan,

-basically you can go for any profile around the airfoil and split it to generate the mesh

what are your objectives?

Far January 21, 2013 12:24

You need quarter O-grid

See these threads:

http://www.cfd-online.com/Forums/ans...ic-trough.html

http://www.cfd-online.com/Forums/ans...w-winglet.html

http://www.cfd-online.com/Forums/ans...ler-blade.html

http://www.cfd-online.com/Forums/ans...tices-why.html

http://www.youtube.com/watch?v=92vScop7b8Q

Also try simple approach:
http://www.cfd-online.com/Forums/ans...ned-plate.html

diamondx January 21, 2013 12:47

your blocking is not good... look at thi thread :

http://www.cfd-online.com/Forums/ans...ic-trough.html

Catthan January 21, 2013 14:02

Thanks guys, quite a bit of reading there to do.

Will make a few attempts and post back.

Thanks a lot!

T

Catthan January 24, 2013 06:11

Ok guys, managed to mesh the airfoil successfully. The approach from the trough thread was the most applicable.

I looked at quarter o-grids and y-grids, however it wouldn't let me create them in 2D.

Well, probably with a few smart splits I could have made a smth similar but anyway,,

I'm sure I'll find this approach useful once I move on to 3D modelling.

Thanks to all!

Best,

Far January 24, 2013 06:26

Quote:

Originally Posted by Catthan (Post 403731)
Ok guys, managed to mesh the airfoil successfully. The approach from the trough thread was the most applicable.

I looked at quarter o-grids and y-grids, however it wouldn't let me create them in 2D.

Well, probably with a few smart splits I could have made a smth similar but anyway,,

I'm sure I'll find this approach useful once I move on to 3D modelling.

Thanks to all!

Best,

Y-grids is used on 3d blocking, but you can use in 2D if you are smart enough. ;)

However quarter ogrid can be used for 2d or 3d


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