CFD Online Discussion Forums

CFD Online Discussion Forums (
-   FLUENT (
-   -   convergence criterion (

FH December 17, 2002 06:21

convergence criterion
I am modelling the laminar flow in the curved duct of square cross section. My problem is when I use the low Dean number equal 150, I have two counters rotating secondary vortices. Or the critical Dean number in my geometry is 150 since the literature(ie at Dn=150, logically I found four counters rotating secondary vortices) Please give me some help, Thank you.

leon December 19, 2002 22:10

Re: convergence criterion
i am not sure what's problem you you want two counters rotat the ssecondary vortex?what's mean? please explain in detail,ok?

FH January 7, 2003 04:53

Re: convergence criterion
Thanks for you leon. I want use an UDF to change the hydraulic diameter in the Navier Stokes equations with the channel width of a curved rectangular channel. Happy new year

All times are GMT -4. The time now is 07:21.