negative pressure in mixing tank

vidhya · April 26, 2011, 07:20

hi i am simulating single phase flow in a stirred tank. i am getting negative values for pressure in the tank domain. why does it happen?
does that indicate that the flow is taking a turn in the opposite direction? if its so then near the walls also i should have negative pressure as the fluid flow diverges at the vicinity of baffles...
i am more confused with it...

ghorrocks · April 26, 2011, 23:16

Anything can happen when you do not do an accurate CFD model. For further hints see:

http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Pressure BC for combustion chamber	Giuki	FLUENT	1	July 19, 2011 12:35
tank sloshing - getting wrong pressure	enghamed	CFX	2	April 26, 2011 23:09
Mixing Tank One Way FSI	Claudio2010	FLUENT	0	July 26, 2009 14:38
Using ideal gas law to simulate pressure decline	Björn Mattsson	FLUENT	5	September 5, 2005 05:03
Hydrostatic pressure in 2-phase flow modeling (CFX4.2)	HB &DS	CFX	0	January 9, 2000 14:19

April 26, 2011, 23:16		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,854 Rep Power: 144	Anything can happen when you do not do an accurate CFD model. For further hints see: http://www.cfd-online.com/Wiki/Ansys..._inaccurate.3F