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-   -   [ANSYS Meshing] Body of Influence (http://www.cfd-online.com/Forums/ansys-meshing/100395-body-influence.html)

MuhammadK April 25, 2012 02:09

Body of Influence
 
Hi everyone

I am currently meshing a rectangular box which is modelled inside a wind tunnel using CFX.

So far, I have inserted inflation (on floor and building faces) and face sizing within a sphere of influence, as shown in the picture in this link http://img855.imageshack.us/img855/4901/spherei.jpg

As a result, my mesh looks like this:
http://img3.imageshack.us/img3/8400/meshfar.jpg

A closer look: http://img607.imageshack.us/img607/7814/meshcloseup.jpg

And after I had put in basic setup, this is what my results look like:
http://img10.imageshack.us/img10/5512/resultstr.jpg

I believe that by having a better body of influence, I will be able to 'capture' better results.

I created a longitudinal rectangular box as a body of influence which is what I did here:
http://img854.imageshack.us/img854/9849/influencer.jpg

However, I am not sure how to mesh the body of influence properly

I hope I had made my situation clear enough. :)
Can anyone show me how to do it?

Thanks!

Muhammad

scipy April 25, 2012 03:05

Quote:

Originally Posted by MuhammadK (Post 356804)
Can anyone show me how to do it?

Thanks!

Muhammad

http://www.youtube.com/watch?feature...-aEIBA4#t=631s

:)

P.S. I think u'd be better off having 2 or even 3 volume boxes for more precise control over the growth, one inside the other and then limit the element size around the the obstruction to the smallest element size, then in the 2nd body of influence you can go 50 % up, and in the third another 50 % up.. because if you refine this whole body of influence u've sketched your element count is going to go up DRASTICALLY.

Good luck.

MuhammadK April 26, 2012 06:04

Got it. cheers! :)


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