No Slip condition Not working

NightWing · May 6, 2015, 00:07

I am trying to simulate condensation on wall, which is at constant temperature.
The problem is that I have specified a no-slip condition at the walls as (fixedvValue (0 0 0 )). Bt it seems that the condensate formed at the walls is moving with the flow downward.

Can anyone suggest why noslip condition isnt working?????

wyldckat · May 18, 2015, 16:13

Quick answer: Not enough information to diagnose the problem, but my guess is that you're not taking into account that the no-slip condition is only applicable for the flow in the surface itself; 1e-10 meters away from the surface is already considered to "not be" the surface itself, which means that even at such a short distance, there is already fluid flow.

May 6, 2015, 00:07	No Slip condition Not working	#1
NightWing Member Akr Join Date: Apr 2015 Location: India Posts: 53 Rep Power: 11	I am trying to simulate condensation on wall, which is at constant temperature. The problem is that I have specified a no-slip condition at the walls as (fixedvValue (0 0 0 )). Bt it seems that the condensate formed at the walls is moving with the flow downward. Can anyone suggest why noslip condition isnt working?????

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May 18, 2015, 16:13		#2
wyldckat Retired Super Moderator Bruno Santos Join Date: Mar 2009 Location: Lisbon, Portugal Posts: 10,974 Blog Entries: 45 Rep Power: 128	Quick answer: Not enough information to diagnose the problem, but my guess is that you're not taking into account that the no-slip condition is only applicable for the flow in the surface itself; 1e-10 meters away from the surface is already considered to "not be" the surface itself, which means that even at such a short distance, there is already fluid flow.