How to set the velocity inlet boundary condition in the compressible flow?

lienien · March 10, 2013, 15:52

I know the velocity boundary condition is not available in the compressible flow. But I need to set a velocity disturbance, such as V=sin(t). How can I do this? Do I need to change the velocity profile to mass flow profile and then set the mass flow boundary condition? What should I do? Help, please.

blackmask · March 10, 2013, 22:20

You can use velocity-inlet b.c. in compressible flow.

lienien · March 11, 2013, 08:25

Thanks for your reply. Do you mean that the velocity inlet boundary conditions is also available if the incoming Much number is 1.5?

March 10, 2013, 15:52	How to set the velocity inlet boundary condition in the compressible flow?	#1
lienien New Member Yanming LIU Join Date: Jan 2013 Location: NJ Posts: 5 Rep Power: 13	I know the velocity boundary condition is not available in the compressible flow. But I need to set a velocity disturbance, such as V=sin(t). How can I do this? Do I need to change the velocity profile to mass flow profile and then set the mass flow boundary condition? What should I do? Help, please.

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March 10, 2013, 22:20		#2
blackmask Senior Member Join Date: Aug 2011 Posts: 421 Blog Entries: 1 Rep Power: 21	You can use velocity-inlet b.c. in compressible flow.

March 11, 2013, 08:25		#3
lienien New Member Yanming LIU Join Date: Jan 2013 Location: NJ Posts: 5 Rep Power: 13	Thanks for your reply. Do you mean that the velocity inlet boundary conditions is also available if the incoming Much number is 1.5?