results for both transition and transition free

November 21, 2005, 08:22

Hello friends i have this problem...

as i doing computations for my work , the results for Transition free and Transition are comeing exactly same... as they r not supposed not for my model. i am doing simulations using cfx-10,for my SST turbulance model and Mach 0.3.

why i am getting same results? what are the points i need to consider for it while running simulations?

please give me some information.....very much urgent

Thanks a lot Hari krihna

November 23, 2005, 19:52

Take a look at the variable "Turbulence Intermittency" in CFX-Post; 0 = Laminar, 1 = Turbulent. Do you have any Laminar boundary layers? If you don't see any Laminar boundary layers then check your mesh to make sure you have YPlus = 1 or less. If you don't see the variable "Turbulence Intermittency" then you are not running the transition model correctly. Check that you picked the Gamma Theta option when picking the Turbulent Transition model. Regards, Mike

November 27, 2005, 08:56

thanks for your info mate...i am doing it now..

November 21, 2005, 08:22	results for both transition and transition free	#1
krishna Guest Posts: n/a	Hello friends i have this problem... as i doing computations for my work , the results for Transition free and Transition are comeing exactly same... as they r not supposed not for my model. i am doing simulations using cfx-10,for my SST turbulance model and Mach 0.3. why i am getting same results? what are the points i need to consider for it while running simulations? please give me some information.....very much urgent Thanks a lot Hari krihna

November 23, 2005, 19:52	Re: results for both transition and transition fre	#2
Mike Guest Posts: n/a	Take a look at the variable "Turbulence Intermittency" in CFX-Post; 0 = Laminar, 1 = Turbulent. Do you have any Laminar boundary layers? If you don't see any Laminar boundary layers then check your mesh to make sure you have YPlus = 1 or less. If you don't see the variable "Turbulence Intermittency" then you are not running the transition model correctly. Check that you picked the Gamma Theta option when picking the Turbulent Transition model. Regards, Mike

November 27, 2005, 08:56	Re: results for both transition and transition fre	#3
krishna Guest Posts: n/a	thanks for your info mate...i am doing it now..

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