|July 14, 2009, 22:06||
Laminar flow and wall roughness
Join Date: Jul 2009
Posts: 9Rep Power: 9
I model bingham plastic, unsteady, vof(paste and water)..
the flow is laminar..(never turbulent)
well.. the channel I model is micro-channel and the wall roughness is very important.
Usually, in the laminar, the wall roughness doesn't affect the flow..
But as I know, in micro-channel, the wall roughness is very important for the pressure drop though the flow is laminar.
So I have to change the wall roughness condition, but in fluent the wall roughness condition is not activated in laminar flow...
of course I know, the roughness condition is activated in turbulent...
But what I need is the method to change the wall roughness condition in laminar flow..
using UDF... is this possible??
or is there other method?
well.. is there a method that I set the turbulent setting and give some appropriate value for the laminar flow?
I am really wondering that...
and, i ask you an advice about whether this is possible or not in fluent setting... please...
Last edited by junbbung; July 15, 2009 at 02:00.
|December 2, 2012, 06:57||
Join Date: Nov 2012
Posts: 20Rep Power: 5
if you set a turbulent viscous and change roughness but you have a laminar flow it doesnt make a significant change
|Thread||Thread Starter||Forum||Replies||Last Post|
|Boundary Layer of Laminar Flow over a Flat Plate||Blasius_Pohlhausen_Crocco||Main CFD Forum||12||September 30, 2013 17:35|
|Influece of wall velocity in the main flow||marvin||CFX||0||March 22, 2008 03:05|
|Surface roughness in laminar flow||carno||FLUENT||4||August 19, 2007 15:52|
|Multicomponent fluid||Andrea||CFX||2||October 11, 2004 05:12|
|what the result is negatif pressure at inlet||chong chee nan||FLUENT||0||December 29, 2001 06:13|