Is there such a thing as a defined velocity for the outlet?

Maeki · April 21, 2021, 17:49

Hello,

is it possible to set a defined velocity at the outlet?

I have a multiphase simulation with a fluid inlet with a defined mass flow and a pressure based inlet of air. The air gets drawn by the fluid "out of" the inlet. So the exact pressure is unkwon. Is it right too just modell it that way, then?

Thanks

LuckyTran · April 22, 2021, 12:42

If you actually know the velocity at the outlet, yes you can model it that way. In Fluent you use a velocity inlet. It's called a velocity inlet but it is a fixed velocity constraint.

LoGaL · April 22, 2021, 19:36

You can assign mass flow outlet boundary condition

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April 22, 2021, 12:42		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,846 Rep Power: 68	If you actually know the velocity at the outlet, yes you can model it that way. In Fluent you use a velocity inlet. It's called a velocity inlet but it is a fixed velocity constraint.

April 22, 2021, 19:36		#3
LoGaL Senior Member Lorenzo Galieti Join Date: Mar 2018 Posts: 375 Rep Power: 13	You can assign mass flow outlet boundary condition