# Near wall distance factor

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 December 9, 2006, 14:03 Near wall distance factor #1 Jonas Pedro Caumo Guest   Posts: n/a Hi everyone ? What is the value of near wall distance factor that you are using ? for sst i used 0.5 Do you calculate or estimate the y+ value in your simulations, is it really a good preocupation ? Thanks.

 December 9, 2006, 14:13 Re: Near wall distance factor #2 Joe Guest   Posts: n/a Read the help manual section on near wall meshing.

 December 9, 2006, 14:20 Re: Near wall distance factor #3 Jonas Pedro Caumo Guest   Posts: n/a it said just konwing things to use 0.5 in SST and 2.0 with others, but i need more about it. thanks

 December 11, 2006, 09:22 Re: Near wall distance factor #4 Omer Guest   Posts: n/a Y+ =0.5 is a good value, but ofcourse it also is very problem specific.The good thing about CFX automatic wall functions is, even if you are between 0.5 to 100 for SST model, it gives you good results. Because it uses low-Re number approximation or log profile approximation wherever they are needed. I hope I am not wrong when I say this.

 December 11, 2006, 09:42 Re: Near wall distance factor #5 Jonas Pedro Caumo Guest   Posts: n/a Thanks a lot, i´m going to study carefully this things to find something better. Your post helped me!! Because it is an specifc thing and a few people use this.

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