CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   FLUENT (http://www.cfd-online.com/Forums/fluent/)
-   -   radial coordinate in UDF (http://www.cfd-online.com/Forums/fluent/32206-radial-coordinate-udf.html)

varghese September 25, 2003 09:48

radial coordinate in UDF
 
Hallo! All,

Who can tell me how to obtain the radial coordinate to write a DEFINE_PROFILE udf? As far as I know x[ND_ND] matrix representation defines x[0] as x-Cartitian co-ordinate, x[1] as y-Cartetian coordinate and x[2] as z-Cartitian coordinate. But when we have a radial profile, how can it be written as a UDF?

Greetings

Varghese

thomas September 25, 2003 10:43

Re: radial coordinate in UDF
 
Hey, hope the following informations will help you.

For cylindrical coordonnates (3D or 2D axy simulation) X(0) = z axis (height of your geometry) X(1) = r (Radial profile) X(2) = Thetha (rotating angle) Note !!! make sure in gambit you have: Gambit x-cartesian-axis represents the Z-axis of your geometry.

For spherical i think the radial profile is obtained by X(0) when X(1,2) are the 2 other rotating angles.

As I do not want to mislead you would better check on the online fluent user documentation. Good luck, thomas.


All times are GMT -4. The time now is 19:35.