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Kevin88 May 23, 2012 09:00

high velocity flow - problem with convergence
 
Trying to model high velocity flow (400m/s) through a pipe system in Fluent. Are there any specific models that should be turned on to aid convergence?
if not, can relaxation factors be tweaked in any way to help?

Far May 23, 2012 11:26

Quote:

Trying to model high velocity flow (400m/s) through a pipe system in Fluent. Are there any specific models that should be turned on to aid convergence?
if not, can relaxation factors be tweaked in any way to help?
use density based solver with hybrid initialisation and solution steering. In solution steering choose the min CLF = 0.1 (or lower) and max = 50 and choose the flow regime (transonic or supersonic)

Kevin88 May 24, 2012 04:32

Thanks for the reply Far. I was wondering what CLF stands for in the solution steering? I can't see anything that it might refer to.

Thanks again
Kevin

Far May 24, 2012 05:17

min and max courant number

go to "more settings" and you find that option there.

https://www.sharcnet.ca/Software/Flu...ug/node840.htm

https://www.sharcnet.ca/Software/Flu...ug/node838.htm

Kevin88 May 24, 2012 06:40

Thanks Far. Much appreciated


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