Roughness in Saturne

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Minh Quan Nguyen

Roughness in Saturne

Post by Minh Quan Nguyen » Thu May 19, 2011 10:33 am

Dear all,

I am new to Saturne and currently use it for the roughness studies of the wind turbine's blade.

I have a question about the way Saturne simulate the roughness impact in wall-function. More precisely, by chance, I have found a formula in the thesis report[1] concerning code Saturne:


,where k,dy, and ks stand for kappa, first grid form wall and roughness respectively.

On the other hand, Ansys Fluent, ... ode253.htm , declares, in (7-13-x) ,the formula for roughness quite differently to the one above.

So i would be grateful if anyone can verify this formula and its validity in external flow.

Thanks in avance,


[1] report here attached in French, page 55.
(8.09 MiB) Downloaded 63 times

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