Boundary condition

attaullah · September 1, 2016, 02:13

HI,

I am simulating a venturi scrubber. In which air is scrubbed by water. I have defined the boundary condition but at the inlet , It shows mixture. It does not show the velocity inlet for the air.

Second i am going to introduce water in the throat, i have to specify the boundary condition , but instead of velocity inlet the boundary condition is set to wall for water .

Pics are hereby attached. Kindly help me in setting boundary conditions for that problem.

Regardsvelocity inlet.jpg

velocity inlet file.jpg velocity inlet.jpg

velocity inlet file.jpg

water in.jpg

duri · September 1, 2016, 06:44

I think it usually shows as mixture. But the mass fraction for the respective phase would be 1. It means, in case of reverse flow it would allow the other phase to enter or exit the boundary.

September 1, 2016, 02:13	Boundary condition	#1
attaullah New Member Attaullah Join Date: Aug 2016 Posts: 23 Rep Power: 9	HI, I am simulating a venturi scrubber. In which air is scrubbed by water. I have defined the boundary condition but at the inlet , It shows mixture. It does not show the velocity inlet for the air. Second i am going to introduce water in the throat, i have to specify the boundary condition , but instead of velocity inlet the boundary condition is set to wall for water . Pics are hereby attached. Kindly help me in setting boundary conditions for that problem. Regardsvelocity inlet.jpg velocity inlet file.jpg velocity inlet.jpg velocity inlet file.jpg water in.jpg

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September 1, 2016, 06:44		#2
duri Senior Member duri Join Date: May 2010 Posts: 245 Rep Power: 16	I think it usually shows as mixture. But the mass fraction for the respective phase would be 1. It means, in case of reverse flow it would allow the other phase to enter or exit the boundary.