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-   -   180 Degree Bend Duct Flow in FLUENT (http://www.cfd-online.com/Forums/fluent/105212-180-degree-bend-duct-flow-fluent.html)

John222 July 25, 2012 08:49

180 Degree Bend Duct Flow in FLUENT
 
I'm simulating a 2D U-bend duct using FLUENT.

Properties from experimental case are;

U= 31.1m/s.
Mach= 0.1.
Operating Pressure= 12atm.
Re=10^6.

What are the boundary conditions at inlet and outlet?
:p

flotus1 July 25, 2012 09:10

If you don't know where and how the values were measured, I would try a velocity inlet with a bulk velocity of U and a pressure outlet at the operating pressure.

John222 July 25, 2012 09:11

Quote:

Originally Posted by flotus1 (Post 373469)
If you don't know where and how the values were measured, I would try a velocity inlet with a bulk velocity of U and a pressure outlet at the operating pressure.


So you mean at inlet I should have 31.1 with 0 pressure, and at outlet 12atm operating pressure?

flotus1 July 25, 2012 10:23

As far as I know you do not need to specify a value for pressure at a velocity inlet.
The pressure at the inlet will be a result of your simulation.


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