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Zero-G experiments in two-phase fluids flow regimesThe two-phase flows studied were liquid and gas mixtures in a straight flow channel of circular cross-section. Boundaries between flow regimes have been defined for normogravity on coordinates of gas quality and total mass velocity; and, when combined with boundary expressions having a Froude number term, an analytical model was derived predicting boundary shifts with changes in gravity level. Experiments with air and water were performed, first in the normogravity environment of a ground laboratory and then in 'zero gravity' aboard a KC-135 aircraft flying parabolic trajectories. Data reduction confirmed regime boundary shifts in the direction predicted, although the magnitude was a little less than predicted. Pressure drop measurements showed significant increases for the low gravity condition.
Document ID
19750056808
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Heppner, D. B.
King, C. D.
(General Dynamics Corp. Convair Div., San Diego, Calif., United States)
Littles, J. W.
(NASA Marshall Space Flight Center Life Support and Environmental Branch, Huntsville, Ala., United States)
Date Acquired
August 8, 2013
Publication Date
July 1, 1975
Subject Category
Fluid Mechanics And Heat Transfer
Report/Patent Number
ASME PAPER 75-ENAS-24
Meeting Information
Meeting: Intersociety Conference on Environmental Systems
Location: San Francisco, CA
Start Date: July 21, 1975
End Date: July 24, 1975
Sponsors: SAE, ASME, AIChE, ASMA, AIAA
Accession Number
75A40880
Funding Number(s)
CONTRACT_GRANT: NAS1-11735
Distribution Limits
Public
Copyright
Other

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