# post processing urgent

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 March 2, 2009, 09:56 post processing urgent #1 shubham Guest   Posts: n/a 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...

 March 2, 2009, 12:36 Re: post processing urgent #2 sathees kannan Guest   Posts: n/a 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!

 March 2, 2009, 14:15 Re: post processing urgent #3 shubham Guest   Posts: n/a 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........

 March 2, 2009, 14:24 Re: post processing urgent #4 sathees kannan Guest   Posts: n/a 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.

 March 3, 2009, 02:38 Re: post processing urgent #5 shubham Guest   Posts: n/a 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

 March 3, 2009, 05:17 Re: post processing urgent #6 sathees kannan Guest   Posts: n/a 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!

 March 3, 2009, 14:06 Re: post processing urgent #7 shubham Guest   Posts: n/a thanks a lotttttttt Sathees its work..

 April 18, 2009, 12:05 #8 New Member   abdul Join Date: Mar 2009 Posts: 8 Rep Power: 10 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?

 January 15, 2013, 05:10 #9 New Member   Petr Vlček Join Date: Jan 2013 Posts: 1 Rep Power: 0 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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