Bubble departure frequency in forced convective subcooled boiling flow
Situ, Rong, Ishii, Mamoru, Hibiki, Takashi, Tu, Jiyuan, Yeoh, Guan Heng, & Mori, Michitsugu (2008) Bubble departure frequency in forced convective subcooled boiling flow. International Journal of Heat and Mass Transfer, 51(25-26), pp. 6268-6282.
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Forced convective subcooled boiling flow experiments were conducted in a vertical upward annular channel. Water was used as the testing fluid, and the tests were performed at atmospheric pressure. A high-speed digital video camera was applied to capture the dynamics of the bubble nucleation process. Bubble departure frequencies were obtained from the video for a total of 58 test conditions. The nondimensional analysis was performed on the current data as well as available data from literature. Existing models and correlations were compared with the experimental data of bubble waiting time, growth time, and departure frequency. The correlations developed for pool boiling flow do not work well for forced convective subcooled boiling flow, while the models proposed for subcooled boiling flow cannot predict the bubble departure frequency in wide experimental ranges. Dimensionless bubble departure frequency is correlated with non-dimensional nucleate boiling heat flux. The new correlation agrees reasonably well with existing experimental data at lower wall superheat.
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|Item Type:||Journal Article|
|Additional Information:||Self-archiving of the published-version is not yet supported by this publisher.
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|Keywords:||Subcooled boiling, Bubble departure frequency, Flow visualization, Forced convection, Bubble departure size|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Energy Generation Conversion and Storage Engineering (091305)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MECHANICAL ENGINEERING (091300) > Mechanical Engineering not elsewhere classified (091399)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Schools > School of Engineering Systems
|Copyright Owner:||Copyright © 2008 Elsevier|
|Deposited On:||03 Feb 2009 00:20|
|Last Modified:||29 Feb 2012 13:48|
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