Simple question about pipe flow

husker · February 28, 2012, 14:14

Hi all,

I have a problem. There are two mass flow inlet BCs and one pressure outlet BC in my mesh. Flow temperatures at the inlets are 320K and 350K. Material is air. Maximum velocity is less than 0.25 Mach.

I would like to know that as if I have to simulate this flow compressible (due to temperature and velocity values) or not?

Regards

nickvinn · February 29, 2012, 04:40

No, unless you have some additional energy release and want to describe sound waves propagation. All you need is conventional Boussinesq approximation.

February 28, 2012, 14:14	Simple question about pipe flow	#1
husker Member Join Date: Mar 2009 Posts: 85 Rep Power: 17	Hi all, I have a problem. There are two mass flow inlet BCs and one pressure outlet BC in my mesh. Flow temperatures at the inlets are 320K and 350K. Material is air. Maximum velocity is less than 0.25 Mach. I would like to know that as if I have to simulate this flow compressible (due to temperature and velocity values) or not? Regards

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February 29, 2012, 04:40		#2
nickvinn New Member Nikolay Vinnichenko Join Date: Nov 2010 Posts: 14 Rep Power: 16	No, unless you have some additional energy release and want to describe sound waves propagation. All you need is conventional Boussinesq approximation.