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Elaprolu vishnuvardhanarao July 12, 2005 13:08
wall function method
 
I have developed code for k-e model and it is applied for square lid driven cavity for Re=480000. it is working well, and when it is for rectangular cavity with x:y 1:3, it is not giving good results. I will be thankful if can anybody suggest me regarding this.

yuan July 20, 2005 02:55
Re: wall function method
 
Some instability of the large-scale flow may develop. In this case your RANS method may become too inaccurate. Even in the square case, the small-scales of corner flow calculated seems OK?

Elaprolu vishnuvardhanarao July 20, 2005 16:31
Re: wall function method
 
Does any alternative is there to overcome this...

yuan July 21, 2005 20:54
Re: wall function method
 
I am not quite sure how to improve a RANS scheme, add more Numerical Viscosity to suppress those instabilities or reduce NV to model. A more accurate model may work, but that type of instability is more subtle and probably inherent in the flow itself.


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