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-   -   post processing urgent (https://www.cfd-online.com/Forums/fluent/50738-post-processing-urgent.html)

 shubham March 2, 2009 09:56

post processing urgent

hi all.. i have an circular outlet surface and i want to break it in two different concentric circle so that i can able to find out the flow rate through these two different concentric surfaces...plz help me in doing this its urgent...

 sathees kannan March 2, 2009 12:36

Re: post processing urgent

First you have to create a surface(circle in shape) which is concentric with the outlet. Open "Surface-->Quadric Surface". Change "Type" to Circle., Switch on the relevant functions to get circle eqn.

Once you created the surface, then this newly created surface will appear in all the post processing options.

For flow rate inside this circle, first compute avg. velocity, from this you can get flowrate inside the circle.

For your ref.-- Circle eqn. is (x-h)^2 + (y-k)^2 = r^2 where h&k are center pts. r-radius. I have not tried it before, but Hope it works!

 shubham March 2, 2009 14:15

Re: post processing urgent

thanks sathees for ur suggestion... but my model is a 3d that's why circle option is not there in quadric surface. cicrle option comes only for 2d geometry for 3d sphere plane etc option comes..so if u have any suggestion for it please reply me........

 sathees kannan March 2, 2009 14:24

Re: post processing urgent

try using sphere plane by switching off the third coordinate. means,

1 for x^2

1 for y^2

0 for z^2

sorry, if I am wrong.

 shubham March 3, 2009 02:38

Re: post processing urgent

thanks Sathees... but how can we do that because in quadric surface panel ther is no option to give the coefficient of x^2 y^2 z^2 etc....we just able to enter the coordinates of center and radius. is there any other way to do this.. please reply ASAP

 sathees kannan March 3, 2009 05:17

Re: post processing urgent

I have uploaded a .pdf file(Creating concentric circle in FLUENT) in my page. http://home.iitk.ac.in/~sathees/ may be helpful for you!

 shubham March 3, 2009 14:06

Re: post processing urgent

thanks a lotttttttt Sathees its work..:)

 abdul April 18, 2009 12:05

Hi All

I am having the same problem and Sathees I have visited ur website and I can not find the guide to creating the circle in Fluent?

Please could you put up again or if someone can send it to me thanks?

 pevlcak January 15, 2013 05:10

Hello
I want also create circle in 3D in similar problem in post processing. Sathee's page wasn't found.Could someone hepl me?
Thanks :)

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