Boundary conditions for the venturi vent

jai_helsing · September 11, 2018, 12:03

Hi All,

I have been working on the vent show in the picture attached. Shown is the 2d cross section of the vent I am trying to design. At the inlet 1 air enters with speed of 35m/s. The second inlet is connected to a box at atmospheric pressure. and the outlet of the vent is exposed to the atmosphere. What I am trying to achieve here is suction for the second inlet due to low pressure created at the constriction. Can someone please help me to setup the boundary conditions with the know data? Do i need to estimate or calculate any values? Thank you.

LuckyTran · September 13, 2018, 09:23

Inlet 2 should be a stagnation pressure inlet (or total pressure inlet) at atmospheric pressure (& and stagnation temperature). Depending on the software you are using, this could just be called a pressure inlet.

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September 13, 2018, 09:23		#2
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,672 Rep Power: 65	Inlet 2 should be a stagnation pressure inlet (or total pressure inlet) at atmospheric pressure (& and stagnation temperature). Depending on the software you are using, this could just be called a pressure inlet.