NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Two-phase choked flow of cryogenic fluids in converging-diverging nozzlesData are presented for the two phase choked flow of three cryogenic fluids - nitrogen, methane, and hydrogen - in four converging-diverging nozzles. The data cover a range of inlet stagnation conditions, all single phase, from well below to well above the thermodynamic critical conditions. In almost all cases the nozzle throat conditions were two phase. The results indicate that the choked flow rates were not very sensitive to nozzle geometry. However, the axial pressure profiles, especially the throat pressure and the point of vaporization, were very sensitive to both nozzle geometry and operating conditions. A modified Henry-Fauske model correlated all the choked flow rate data to within + or - 10 percent. Neither the equilibrium model nor the Henry-Fauske model predicted throat pressures well over the whole range of data. Above the thermodynamic critical temperature the homogeneous equilibrium model was preferred for both flow rate and pressure ratio. The data of the three fluids could be normalized by the principle of corresponding states.
Document ID
19790021297
Acquisition Source
Legacy CDMS
Document Type
Technical Publication (TP)
Authors
Simoneau, R. J. (NASA Lewis Research Center Cleveland, OH, United States)
Hendricks, R. C. (NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
August 9, 2013
Publication Date
July 1, 1979
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
E-9659
NASA-TP-1484
Accession Number
79N29468
Funding Number(s)
PROJECT: RTOP 506-21
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available