CFD Online Logo CFD Online URL
Home > Forums > FLUENT

SOS Low Reynolds model or Realizable k ε model?

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   January 18, 2011, 15:05
Question SOS Low Reynolds model or Realizable k ε model?
Join Date: Nov 2009
Posts: 33
Rep Power: 7
panos_metal is on a distinguished road

I am simulating the downward flow of air in a vertical tube with heated walls of constant temperature. The air is injected (air temperature at the inlet-25 C)from the top by 6 little holes in the direction of gravity ..Reynolds number on the injections exceeds 2100 so the flow assumed turbulent..BUT the diameter of the tube is much higher and when i calculated the Re number at the main tube Re does not exceed 200..That means that in my domain i have for sure a region of turbulent (the upper part where the air is injected - the phenomeno is endured due to the expansion of air as i have take the air density as temperature dependent) and a laminar region ( flow in the main cylinder). Can someone help me on the choice of a model? The only exit of the furnace is at the bottom.
I have searched a lot in bibliography but i havent found something similar.
Can you please advice me how i have to treat the problem in terms of the appropriate model?
Please help
Thank you in advance
panos_metal is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Use of k-epsilon and k-omega Models Jade M Main CFD Forum 12 June 2, 2015 13:16
low reynolds number models in Fluent doug Main CFD Forum 6 August 4, 2012 14:39
low reynolds airfoil simulation miguel.soto FLUENT 3 March 3, 2010 14:51
Low Reynolds number K-Omega modeling Athar Zaidi Main CFD Forum 0 October 31, 1999 14:59
a low Re number model for impinging jets mahesh prakash Main CFD Forum 14 September 3, 1999 16:40

All times are GMT -4. The time now is 20:19.