CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CD-adapco (http://www.cfd-online.com/Forums/cd-adapco/)
-   -   Vorticity iso surface around propeller in CCM+ (http://www.cfd-online.com/Forums/cd-adapco/55813-vorticity-iso-surface-around-propeller-ccm.html)

Dan January 23, 2007 14:53

Vorticity iso surface around propeller in CCM+
 
Hi, I'm trying to post process a propeller model, and want to show the extents of the propeller wake in ccm+, does anyone know how to write a field function to calculate this? Specifically I can't figure out how to calculate gradients in ccm+

Thanks,

Dan

Ben January 23, 2007 15:13

Re: Vorticity iso surface around propeller in CCM+
 
To get the gradients you need click on the solver node (segregated flow or coupled flow) and click "retain temporary storage) then step once. I wouldn't run with temporary storage retained as it uses more memory, but it will give you a load of extra field functions including strain rates, all the gradients, residuals etc. You can then calculate vorticity from the gradients....I am afraid I can't remember the formulation but I am sure that someone can give you the formula to put into a new field function..

Dan January 23, 2007 15:17

Re: Vorticity iso surface around propeller in CCM+
 
Hey Ben,

Thanks alot, that's a big help, I should be able to figure out the formulations once I get the gradients.

Cheers,

Dan


All times are GMT -4. The time now is 00:02.