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Old   July 18, 2013, 08:28
Default Can someone help me
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Eugen Zec
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Im new here so im sorry if I did something wrong, and about my question I hope there is some little thing I did wrong and can change it easy.

I'm creating a mesh which ill use in fluentbut at the entrance and exits my mesh goes wild and i dont know how to fix it, can someone pls help me.

Im using ogrid and when i use my mesh is good in all places except entrance/exit.
skewnees is awful and it looks like this


[img=http://imageshack.us/scaled/thumb/28/3y1.png]


[img=http://imageshack.us/scaled/thumb/21/wjjj.png]

mb this should be moved to ANSYS Meshing & Geometry
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Old   July 18, 2013, 11:19
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it must a problem of associations, share project via dropbox, i have some free time...
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Old   July 18, 2013, 11:54
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Go to blocking > Association > update association and select first three options and apply



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Old   July 18, 2013, 13:48
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Hi Far and ty guys for helping me.

https://www.dropbox.com/s/d8w8lnstn5x0tsh/preogrid.zip

this is what i have...and pictures you see are what i get after using ogrid.
I need agood mesh so i can use it in fluent, i need to learn how to do it.
All i know i've learned online so I'm not very good...tyvm
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Old   July 18, 2013, 15:03
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If this can help someone, this one of my version after using ogrid, this mesh is also bad, around intersection of pipes...pls help with this :/

https://www.dropbox.com/s/qc05lk52uytb7v8/postogrid.zip
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Old   July 18, 2013, 15:11
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can you modify geometry at intersection zone?
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Old   July 18, 2013, 15:19
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I cant, I did all my geometry with CATIA
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Old   July 18, 2013, 15:25
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This is good enough ?
Attached Files
File Type: zip T_juction_meshproblem_Far.zip (16.0 KB, 11 views)
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Old   July 18, 2013, 15:29
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Yeah, this looks great, can you explain me how did you do it. I'm sorry if im too demanding, i really want to learn how to do it
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Old   July 18, 2013, 15:32
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I simply did not associate edges to those intersection curves. And Also moved vertices little bit.
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Old   July 18, 2013, 15:35
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Well, you've helped me alot, hopefully this will be good enough mesh for me do some calculations in fluent.

THANK YOU AGAIN
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Old   July 18, 2013, 15:37
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try this ...https://dl.dropboxusercontent.com/u/...6/preogrid.zip
Far likes this.
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Old   July 18, 2013, 15:46
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Diamond, can you explain me how did you do that, yours is also awesome, how?
And thank you very much
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Old   July 18, 2013, 16:17
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Quote:
Originally Posted by diamondx View Post
Much better
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Old   July 18, 2013, 16:26
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there is nothing better than a video to explain this. but i can't install a mkv codec due to privileges. i will try to do that from home. meanwhile i did the necessary split. and merge some vertex together, and o-grid were the last... look at the tutorial "3d pipe junction" it is same blocking strategy, you can start from that one to understand
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Old   July 18, 2013, 16:36
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Ali why do you think that "3d pipe junction" uses the same approach? I dont see similar blocking approach in that tut!!!!
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Old   July 18, 2013, 16:37
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that geometry looks like half of the one we have here, no ? try to mirror it
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Old   July 18, 2013, 16:41
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No. I have more feeling of "pipe blade tutorial"

Hey did you like the idea of 3d laser scanner ?
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Old   July 18, 2013, 16:42
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Quote:
Hey did you like the idea of 3d laser scanner ?
You couldn't be more helpful than that... hehehe
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Old   July 18, 2013, 16:50
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Your idea is awesome. How did you get it?
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