mass flow and pressure BC known at inlet, outlet BCs unknown

akashmpatil · December 12, 2013, 06:37

Hello,
I wish to analyze a compressible flow through a bit complex geometry.
I know my mass flow rate and pressure at the inlet.
Boundary conditions at outlet are not known.
I can't use outflow boundary condition as the flow is compressible.
Hence, I am unclear about the selection of the inlet and the outlet boundary conditions.

If anyone knows how to solve this or faced similar situation, please help me out.

Cheers!

Zaktatir · December 12, 2013, 13:02

Mass flow inlet with static pressure specification

Pressure outlet at the outlet

December 12, 2013, 06:37	mass flow and pressure BC known at inlet, outlet BCs unknown	#1
akashmpatil New Member Akash Patil Join Date: Dec 2013 Location: India Posts: 2 Rep Power: 0	Hello, I wish to analyze a compressible flow through a bit complex geometry. I know my mass flow rate and pressure at the inlet. Boundary conditions at outlet are not known. I can't use outflow boundary condition as the flow is compressible. Hence, I am unclear about the selection of the inlet and the outlet boundary conditions. If anyone knows how to solve this or faced similar situation, please help me out. Cheers!

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December 12, 2013, 13:02		#2
Zaktatir Senior Member Join Date: Jan 2010 Location: Germany Posts: 268 Rep Power: 17	Mass flow inlet with static pressure specification Pressure outlet at the outlet