Self priming venturi scrubber

sam8 · August 10, 2016, 06:02

Hello everyone!
My problem is related to three phase flow in which air and dust are entering from the inlet of venturi while water has to enter in the domain through orifices around the throat section through due to difference between inside throat (negative pressure) and outside throat (in tank, hydrostatic pressure).
I am facing a difficulty in applying boundary condition for that....any suggestions?

ghorrocks · August 10, 2016, 19:20

That depends entirely what is controlling the flow. If it is a specified flow rate then use a flow rate boundary. If it is a pressure then use a pressure boundary. If you don't know what it is then you can't impose a boundary condition there and you need to move the boundary to somewhere you do know the conditions.

August 10, 2016, 06:02	Self priming venturi scrubber	#1
sam8 New Member Join Date: Aug 2016 Posts: 1 Rep Power: 0	Hello everyone! My problem is related to three phase flow in which air and dust are entering from the inlet of venturi while water has to enter in the domain through orifices around the throat section through due to difference between inside throat (negative pressure) and outside throat (in tank, hydrostatic pressure). I am facing a difficulty in applying boundary condition for that....any suggestions?

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August 10, 2016, 19:20		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,697 Rep Power: 143	That depends entirely what is controlling the flow. If it is a specified flow rate then use a flow rate boundary. If it is a pressure then use a pressure boundary. If you don't know what it is then you can't impose a boundary condition there and you need to move the boundary to somewhere you do know the conditions.