CFD Online Discussion Forums

CFD Online Discussion Forums (
-   FLUENT (
-   -   Flow Courant Number in Solution Controls (

NCle March 28, 2013 16:26

Flow Courant Number in Solution Controls
What does changing of the setting "Flow Courant Number" inside Solution Controls do? Or, is there a link to the theory behind this setting?

Flow Courant Number has an effect on convergence of my model (which is micron scale, FSI, and creeping flow) but I have trouble finding a good setting, and convergence is precarious.

RodriguezFatz June 6, 2013 10:24

I can't find it in the Fluent help either. Can Anyone tell me where to find what "Flow Courant Number" numerically means for steady state calculations?

oj.bulmer June 6, 2013 11:21

I have posted a detailed explanation here:


NCle June 6, 2013 14:37

URF or Flow Courant Number
Thanks O.J.,

I'm wondering, if you set the underrelaxation to one value and the flow courant number to another, which one will Fluent use?

oj.bulmer June 6, 2013 15:00

I have answered this question as well:

Try reading through the next posts after this post (up to post #20), there is some discussion.


All times are GMT -4. The time now is 02:27.