Two phase (water-air) in centrifugal impeller

phPatras · March 4, 2019, 05:20

My problem is that when I change my flow condition from water (where the solution is ok) to water-air the pressure at inlet become bigger than at outlet...?

Svetlana · March 4, 2019, 23:21

Could you describe the problem a bit more please? Include a picture of the velocity vectors or pressure contours or both and then someone can give you a tip or try running a similar problem for a quick test.

phPatras · March 7, 2019, 04:34

My mistake ... at the boundary condition.My domain is a section of an impeller (as periodically repeated). At the case of water i use the "turbo" function and the mass flow that i put concern all the impeller. At two phase this function don't work... and so i have to change the mass flow.

March 4, 2019, 05:20	Two phase (water-air) in centrifugal impeller	#1
phPatras New Member Mentzos Join Date: Dec 2010 Location: Athens Posts: 22 Rep Power: 16	My problem is that when I change my flow condition from water (where the solution is ok) to water-air the pressure at inlet become bigger than at outlet...?

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March 4, 2019, 23:21		#2
Svetlana Senior Member Svetlana Tkachenko Join Date: Oct 2013 Location: Australia, Sydney Posts: 416 Rep Power: 15	Could you describe the problem a bit more please? Include a picture of the velocity vectors or pressure contours or both and then someone can give you a tip or try running a similar problem for a quick test.

March 7, 2019, 04:34		#3
phPatras New Member Mentzos Join Date: Dec 2010 Location: Athens Posts: 22 Rep Power: 16	My mistake ... at the boundary condition.My domain is a section of an impeller (as periodically repeated). At the case of water i use the "turbo" function and the mass flow that i put concern all the impeller. At two phase this function don't work... and so i have to change the mass flow.