Bubble departure in forced convective subcooled boiling flow
Situ, Rong, Tu, Jiyuan, Yeoh, Guan Heng, Park, Goon Cherl, Hibiki, Takashi, and Ishii, Mamoru (2006) Bubble departure in forced convective subcooled boiling flow. Proceedings of 13th International heat Transfer Conference. The 13th International heat Transfer Conference , 13-18 August 2006, Sydney, Australia .
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Forced convective subcooled boiling flow experiments were conducted in a BWR-scaled 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 92 test conditions. The departure frequency increases as the increase of inlet temperature or heat flux, or the decrease of inlet fluid velocity. A force balance analysis of a growing bubble was performed to predict the bubble departure size to be around 10-4 m. The departure frequency is modelled by taking account of transient heat conduction and bubble growth rate. Comparison with experiments suggests that departure frequency falls into two regions: subcooled region and saturate region. The proposed bubble departure frequency model agreed fairly well with the experimental data.
|Item Type:||Conference Item (Refereed Research Paper - E1)|
|FoR Codes:||09 ENGINEERING > 0915 Interdisciplinary Engineering > 091504 Fluidisation and Fluid Mechanics @ 50%|
09 ENGINEERING > 0915 Interdisciplinary Engineering > 091505 Heat and Mass Transfer Operations @ 50%
|SEO Codes:||85 ENERGY > 8504 Energy Transformation > 850403 Nuclear Energy @ 50%|
85 ENERGY > 8507 Energy Conservation and Efficiency > 850701 Commercial Energy Conservation and Efficiency @ 50%
|Deposited On:||20 Aug 2012 15:01|
|Last Modified:||20 Aug 2012 15:01|
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