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Forum: Main CFD Forum

September 23, 2015, 13:35

Replies: 18

calculate y+ and u+ -how to get wall shear stress?

Views: 30,664

Posted By FMDenaro

have a look here...

have a look here http://www2.mech.kth.se/courses/5C1218/bdrylayers.pdf

to compute accurately the normal derivative at wall, you need a resolved boundary layer, therefore at least some...

Forum: Main CFD Forum

September 23, 2015, 12:38

Replies: 18

calculate y+ and u+ -how to get wall shear stress?

Views: 30,664

Posted By FMDenaro

What about your aim? you have a solution in...

What about your aim? you have a solution in dimensional form and you want to extract u_tau?

In a DNS you will find not only du/dy at wall different from zero but also other derivatives as they are...

Forum: Main CFD Forum

September 21, 2015, 10:47

Replies: 18

calculate y+ and u+ -how to get wall shear stress?

Views: 30,664

Posted By FMDenaro

as very rude estimation, a factor 15 - 16 gives...

as very rude estimation, a factor 15 - 16 gives the magnitude of ReH once the Retau is given

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