|January 18, 2011, 15:05||
SOS Low Reynolds model or Realizable k ε model?
Join Date: Nov 2009
Posts: 33Rep Power: 7
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?
Thank you in advance
|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|