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Re: 2D turbulent channel flow: pb with TKE results
Posted: Wed Feb 09, 2011 2:22 pm
by 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
Re: 2D turbulent channel flow: pb with TKE results
Posted: Wed Feb 09, 2011 3:13 pm
by 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?
Re: 2D turbulent channel flow: pb with TKE results
Posted: Wed Feb 09, 2011 4:29 pm
by gina
why is the results change between two different versions !! ?
Re: 2D turbulent channel flow: pb with TKE results
Posted: Wed Feb 09, 2011 4:33 pm
by 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
Re: 2D turbulent channel flow: pb with TKE results
Posted: Wed Feb 09, 2011 5:38 pm
by gina
here the comparison with your tke.dat file.
Re: 2D turbulent channel flow: pb with TKE results
Posted: Thu Feb 10, 2011 10:45 am
by 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?
Re: 2D turbulent channel flow: pb with TKE results
Posted: Thu Feb 10, 2011 12:38 pm
by 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