REy < 200

fluentguy · May 5, 2009, 23:05

Hi,

In an analysis of turbulent flow, k - e model was used with enhanced wall treatment. The following requirements are necessary for enhanced wall treatment:
1) y+ value to be of the order of 1 and
2) atleast 10 cells within viscosity affected near wall region(Re y < 200)

I have checked for y+ and the requirement is satisfied. But I am unable to check for the 2nd requirement.

How do I find the distance from the wall where Rey < 200 ? Does it involve manual computation or can it be done in Fluent?

vishyaroon · May 5, 2009, 23:58

I am not sure if there is a function to look for Re y < 200. If you know that the first mesh point is < 1, try defining a variable that specifies Re y. Plotting this parameter will show you as to how many points are within Re y < 200.

May 5, 2009, 23:05	REy < 200	#1
fluentguy New Member Join Date: May 2009 Posts: 8 Rep Power: 16	Hi, In an analysis of turbulent flow, k - e model was used with enhanced wall treatment. The following requirements are necessary for enhanced wall treatment: 1) y+ value to be of the order of 1 and 2) atleast 10 cells within viscosity affected near wall region(Re y < 200) I have checked for y+ and the requirement is satisfied. But I am unable to check for the 2nd requirement. How do I find the distance from the wall where Rey < 200 ? Does it involve manual computation or can it be done in Fluent?

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May 5, 2009, 23:58		#2
vishyaroon Senior Member Aroon Join Date: Apr 2009 Location: Racine WI Posts: 148 Rep Power: 17	I am not sure if there is a function to look for Re y < 200. If you know that the first mesh point is < 1, try defining a variable that specifies Re y. Plotting this parameter will show you as to how many points are within Re y < 200.