Outflow for suction pressure

Mohsin · August 1, 2012, 21:11

Hi

In FLUENT can "outflow" be used, at the outlet, where the flow is fully developed and the vaccum pressure applied.

If air is being sucked (negative pressure at the outlet); is it fine to use "Outflow" BC or "pressure outlet" would be used instead? When I use "pressure outlet BC" I get reverse flow in 50 faces...Is it normal??

I am using cyclone and have a total cell size of about 0.4 Million.

Please assist

mohammadkm · August 4, 2012, 12:51

when there is back flow in outlet, you should use pressure outlet.

August 1, 2012, 21:11	Outflow for suction pressure	#1
Mohsin Senior Member Mohsin Mukhtar Join Date: Mar 2010 Location: South Korea Posts: 249 Rep Power: 17	Hi In FLUENT can "outflow" be used, at the outlet, where the flow is fully developed and the vaccum pressure applied. If air is being sucked (negative pressure at the outlet); is it fine to use "Outflow" BC or "pressure outlet" would be used instead? When I use "pressure outlet BC" I get reverse flow in 50 faces...Is it normal?? I am using cyclone and have a total cell size of about 0.4 Million. Please assist Last edited by Mohsin; August 1, 2012 at 22:49.

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August 4, 2012, 12:51		#2
mohammadkm Member mohammad Join Date: Apr 2010 Posts: 42 Rep Power: 16	when there is back flow in outlet, you should use pressure outlet.