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The initiation of boiling during pressure transientsThe initiation of boiling of water on metal surfaces during pressure transients has been investigated. The data were obtained by a new technique in which light beam fluctuations and a pressure signal were simultaneously recorded on a dual beam oscilloscope. The results obtained agreed with those obtained using high speed photography. It was found that, for water temperatures between 90-150 C, the wall superheat required to initiate boiling during a rapid pressure transient was significantly higher than required when the pressure was slowly reduced. This result is explained by assuming that a finite time is necessary for vapor to fill the cavity at which the bubble originates. Experimental measurements of this time are in reasonably good agreement with calculations based on the proposed theory. The theory includes a new procedure for estimating the coefficient of vaporization.
Document ID
19740030558
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Weisman, J.
Bussell, G.
Jashnani, I. L.
Hsieh, T.
(Cincinnati, University Cincinnati, Ohio, United States)
Date Acquired
August 7, 2013
Publication Date
November 1, 1973
Subject Category
Thermodynamics And Combustion
Report/Patent Number
ASME PAPER 73-WA/HT-25
Meeting Information
Meeting: Winter Annual Meeting
Location: Detroit, MI
Start Date: November 11, 1973
End Date: November 15, 1973
Sponsors: American Society of Mechanical Engineers
Accession Number
74A13308
Distribution Limits
Public
Copyright
Other

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