LES: fully developed flow at the inlet of a duct
 

Hi guys

I wanna impose fully developed flow at the inlet of a duct. I do not have much time so what will be best option to do that. All kind of ideas are welcome. Thanks in advance for your help.

cfd novice

Re: LES: fully developed flow at the inlet of a du
 

If you look up Frank White's Fluid mechanics you will get solution for fully developed laminar flow in a duct. You can then impose fluctuations on it if you want turbulent flow at inlet.

Re: LES: fully developed flow at the inlet of a du
 

Hi agg

Thats exactly what I was looking for. How do I impose fluctuations at the inlet? There is no such facility in CFX to do that. Thanks

cfd novice

Re: LES: fully developed flow at the inlet of a du
 

Is it possible to read in inlet profiles every few time steps in CFX? If so, you could have a set of files that you create with the fluctuations superimposed on the mean laminar profile and have CFX read it.

Re: LES: fully developed flow at the inlet of a du
 

But that would only give me interior fluctuations, I was trying to obtain fluctuations at the inlet boundary. Thank you for your answer.

cfd.novice