Wall function

March 17, 2005, 12:04

hi I am simulating flow behind a bluff body. Not I know that if I want to use the wall function. the y+ plus values should not be less than 11 and greater than 60. How can I make delta x of the first node to the value which I require and use the structure grid i.e delta x in other cels are equal and less than delta x in the first cell.

Y

March 17, 2005, 13:33

You can try the Viscous Grid Spacing Calculator. You can find the link to it in the CFD-online web page.

http://www.cfd-online.com/Resources/calcs.html

Galeazzo

March 18, 2005, 02:21

I know the spacing how can I fix this spacing for the first node and use other spacing for grids from second node to last node. Y

March 17, 2005, 12:04	Wall function	#1
Y Guest Posts: n/a	hi I am simulating flow behind a bluff body. Not I know that if I want to use the wall function. the y+ plus values should not be less than 11 and greater than 60. How can I make delta x of the first node to the value which I require and use the structure grid i.e delta x in other cels are equal and less than delta x in the first cell. Y

March 17, 2005, 13:33	Re: Wall function	#2
galeazzo Guest Posts: n/a	You can try the Viscous Grid Spacing Calculator. You can find the link to it in the CFD-online web page. http://www.cfd-online.com/Resources/calcs.html Galeazzo

March 18, 2005, 02:21	Re: Wall function	#3
Y Guest Posts: n/a	I know the spacing how can I fix this spacing for the first node and use other spacing for grids from second node to last node. Y

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