About density treatmen for velocity inlet BC.

matwav · January 8, 2011, 22:14

Hi,If now have an Air flow problem,we give velocity inlet BC,but we want to know about how CFX to calculate the density?

ghorrocks · January 9, 2011, 19:41

You do not specify density directly. The density is defined by the inlet temperature.

matwav · January 10, 2011, 06:07

Quote:

Originally Posted by ghorrocks

You do not specify density directly. The density is defined by the inlet temperature.

thanks, calculate density need temperature and pressure,how the pressure is defined?

ghorrocks · January 10, 2011, 16:38

This is all described in the documentation. Pressure is taken from the boundary control volume, ie from the domain.

January 8, 2011, 22:14	About density treatmen for velocity inlet BC.	#1
matwav New Member Bill Join Date: Mar 2009 Posts: 8 Rep Power: 17	Hi,If now have an Air flow problem,we give velocity inlet BC,but we want to know about how CFX to calculate the density?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
simpleFoam Blows up with Parabolic Inlet Pipe Flow	swahono	OpenFOAM	0	December 6, 2010 19:37
[TGrid] Inlet passage in turbogrid.	soldimix15	ANSYS Meshing & Geometry	0	September 5, 2010 11:34
Mass Flow Inlet	Pravir Kumar Rai	FLUENT	0	February 19, 2003 14:03
Combustion Convergence problems	Art Stretton	Phoenics	5	April 2, 2002 05:59
length scales at inlet for internal flows	Anne-Marie Giroux	Main CFD Forum	3	July 5, 1999 21:28

January 9, 2011, 19:41		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	You do not specify density directly. The density is defined by the inlet temperature.

January 10, 2011, 16:38		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	This is all described in the documentation. Pressure is taken from the boundary control volume, ie from the domain.