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Steam chugging analysis in single-vent vapor injectionA complete cycle of the periodic steam chugging phenomenon is analyed. Steam velocity and pressure variations in the vent are described by one-dimensional conservation equations. This is coupled either to the water slug model when water is in the vent, or, the infinite pool spherical bubble model at the vent exit during bubble growth. An isolated spherical bubble model is used for computing the collapse pressures. Comparisons of the model predictions with the UCLA 1/12-scale and the Japan 1/6-scale data indicate that the vent-pipe model predicts the vent-clearing times and the bubble growth times well. In addition, the predicted maximum chugging heights compared well with those measured in the Japan data. On bubble collapse pressures, the comparison with the spherical bubble model predictions is only fair. The model generally overpredicts the magnitude of the spikes. On examining the effects of pool subcooling and steam mass flux, general agreement is found between the predicted trends and those measured.
Document ID
19830061540
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Lee, C. K. B.
(R & D Associates Marina del Rey, CA, United States)
Chan, C. K.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena CA, United States)
Date Acquired
August 11, 2013
Publication Date
January 1, 1982
Subject Category
Fluid Mechanics And Heat Transfer
Meeting Information
Meeting: Heat transfer 1982
Location: Munich
Start Date: September 6, 1982
End Date: September 10, 1982
Accession Number
83A42758
Funding Number(s)
CONTRACT_GRANT: AT(48-24)-0342
Distribution Limits
Public
Copyright
Other

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