help with modeling stratified flow in Fluent

December 18, 2007, 03:55

I am trying to simulate stratified two phase (air-water) flow within a pipe using the VOF model in Fluent. The air velocity is 7.39 m/sec & water velocity is 0.039 m/sec I divided the inlet into two parts one for air & the other for water , the results being good for predicting the velocity profile but the problem I cannot see a clear interface between the phases and when I view the contours of volume fraction the pipe appeared filled with air only knowing that I use unsteady solver with implicit scheme for VOF so who can assist me with this request.

BAKER

michaelb · July 22, 2009, 14:42

Hi Baker,

I currently have the same problem. Could you tell me if you managed to do what you wanted and how you did it? I guess it is only a problem in the way I specify the boundary conditions but I can't find out why it doesn't work...
That would be very helpful. Thanks in advance for any help you could provide.

Mike

December 18, 2007, 03:55	help with modeling stratified flow in Fluent	#1
Baker Guest Posts: n/a	I am trying to simulate stratified two phase (air-water) flow within a pipe using the VOF model in Fluent. The air velocity is 7.39 m/sec & water velocity is 0.039 m/sec I divided the inlet into two parts one for air & the other for water , the results being good for predicting the velocity profile but the problem I cannot see a clear interface between the phases and when I view the contours of volume fraction the pipe appeared filled with air only knowing that I use unsteady solver with implicit scheme for VOF so who can assist me with this request. BAKER

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July 22, 2009, 14:42		#2
michaelb New Member Michael Bruckner Join Date: Apr 2009 Location: France Posts: 27 Rep Power: 17	Hi Baker, I currently have the same problem. Could you tell me if you managed to do what you wanted and how you did it? I guess it is only a problem in the way I specify the boundary conditions but I can't find out why it doesn't work... That would be very helpful. Thanks in advance for any help you could provide. Mike