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-   -   how to calculate circulation in ansys fluent 13.0 (http://www.cfd-online.com/Forums/fluent/109145-how-calculate-circulation-ansys-fluent-13-0-a.html)

 ijlal November 10, 2012 06:34

how to calculate circulation in ansys fluent 13.0

i am performing numeruical experiment on subsonic airfoil in ansys fluent 13.0. i want to calculate circulation around the airfoil on the defined shape of rectangle. is there any way of calculating circulation??????? help me...i am new to cfd:confused::confused::confused:

 LuckyTran November 14, 2012 12:34

Integrate vorticity over the entire domain or just the rectangle (volume integral), that gives you circulation.

If you need to: use definition of circulation and apply Stoke's theorem to convince yourself that it gives the same result.

 ijlal November 15, 2012 05:53

no..it would not give the circulation. i need user defined codes that would calculate simultaneously along with drag and lift history ...stokes theorem cannot be applied to the area inside of which there is airfoil...

 LuckyTran November 15, 2012 12:19

Stoke's theorem should work even around airfoils?

 ijlal November 17, 2012 05:43

we want circulation on a rectangle around airfoil. and stokes theorem is applied for deformable boundary.since the rectangle contains airfoil and hence it is not applied here....can you suggest me some other way....have you ever calculated it before???????

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