2D turbulent channel flow: pb with TKE results

[gina]

yes Mickaël i have use your xml file which i have send you Friday 01:54.
you can find as attached his listing file and my comparison with DNS.
thanks

[Mickael Hassanaly]

You use a Rc version of Code_Saturne which is not the final one. Could you download the latest version 2.0.1 and try again?

[gina]

why is the results change between two different versions !! ?

[Mickael Hassanaly]

Probably because it was remaining some bug but here, it's not the case because i tested it with the version you use. My tke.dat is hereafter. So last point to check, you have to run into debug version.
 
Mickael

[gina]

here the comparison with your tke.dat file.

[Mickael Hassanaly]

you assume a u_tau=1.00005m/s but in the listing file u_tau which i suppose to be uk for Code_Saturne is about 1.77m/s in my case and in your listing, it's 3.37m/s. Could you confirm that u_tau is turbulent friction velocity in your case?

[gina]

Hi Mickael,
exactly my turbulent friction velocity u_tau= 1,00005 m/s, my Re_tau=590 
but how to introduce these values in saturne GUI?
in saturne GUI i have introduce nu= 0.001695 m²/s  where u_tau= (Re_tau*nu)/h  , h=1
and i have introduce ref velocity=18.4539 m/s