CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   Main CFD Forum (http://www.cfd-online.com/Forums/main/)
-   -   inlet velocity profile for fully developed turbule (http://www.cfd-online.com/Forums/main/13989-inlet-velocity-profile-fully-developed-turbule.html)

pankaj saha August 21, 2007 17:21

inlet velocity profile for fully developed turbule
 
hi,

i am simulating fully developed 3D-rectangular chnannel flow . The geometry is as follows----

top and bottom---wall(no slip b.c) spanwise side surface----symetric b.c

outlet---Oranlski

INLET----here i want to apply fully developed velocity profile.

can anyone tell what should be the fully developed turbulent profile for rectangular channel.

please be remember that, i am simulating this turbulence flow by means of large eddy simulation.

2. Also can any one tell, what should be the initial condition for velocity for the whole domain.

thanks

pankaj

pankaj_online2@rediffmail.com


tom August 22, 2007 02:09

Re: inlet velocity profile for fully developed tur
 
Hi,

Why don't you use periodic BC if you want to to simulate a fully developed channel flow?

pankaj saha August 22, 2007 11:06

Re: inlet velocity profile for fully developed tur
 
hi,

The main motive of my channel simulation is to show the grid resolution near the wall. Then, with the channel i will fit winglet for heat transfer improvement...at that time the domain will be non-homogeneous.....so, i couldnot use periodic b.c.

so, please can u help me inthis regard....with providing some paper...

thanks pankaj

Arpiruk August 23, 2007 08:26

Re: inlet velocity profile for fully developed tur
 
This method is very effective.

37. M. Manhart and R. Friedrich, DNS of a turbulent boundary layer with separation. Int. J. Heat Fluid Flow 23 5 (2002), pp. 572"581. SummaryPlus

pankaj saha August 24, 2007 16:53

Re: inlet velocity profile for fully developed tur
 
hi, Arpiruk thanks for your reply. i will read the journal. can You please tell, is there any material on plane chanel flow. As, all the channel flow case people use periodic b.c in place of inflow/outflow b.c. Could , i use the same procedure as outlined in the paper u refer as the paper you mention is related to boundary layer,but my case is channel flow which is a internal flow.

thanks once again


All times are GMT -4. The time now is 22:53.