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difference between mass and momentum source

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Old   November 26, 2012, 17:42
Default difference between mass and momentum source
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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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Old   November 28, 2012, 11:41
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I suggest you to use mass flow conditions for your case.

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

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