difference between mass and momentum source

Niru · November 26, 2012, 17:42

I included a subdomain in my domain (CFX-PRE)
I am trying to model a cryogenic which flows in 2 phase. Currently i have entered 2 components Air & cryogenic.
Cryogenic has to modelled in multiphase.

1.I would like to know the difference between specifying a mass source and
momemtum source.
2.Also difference between specifying Bulk source & fluid sources separately.

Engr.RZA · November 28, 2012, 11:41

I suggest you to use mass flow conditions for your case.

Bulk source is suitable for the fully developed flow in channel/pipe.

November 26, 2012, 17:42	difference between mass and momentum source	#1
Niru Member niru Join Date: Apr 2012 Posts: 55 Rep Power: 14	I included a subdomain in my domain (CFX-PRE) I am trying to model a cryogenic which flows in 2 phase. Currently i have entered 2 components Air & cryogenic. Cryogenic has to modelled in multiphase. 1.I would like to know the difference between specifying a mass source and momemtum source. 2.Also difference between specifying Bulk source & fluid sources separately.

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November 28, 2012, 11:41		#2
Engr.RZA New Member RZA Join Date: Nov 2012 Posts: 25 Rep Power: 14	I suggest you to use mass flow conditions for your case. Bulk source is suitable for the fully developed flow in channel/pipe.