In present work, a visualized investigation was conducted to understand the phenomenon of bubble sliding on vertical heating wall with upward subcooled flow boiling in narrow rectangle channel with gaps of 2.5 mm. Experimental results show that the characteristics of bubble slipping are significantly influenced by mainstream velocity and temperature. With increasing mainstream velocity, bubble sliding distance and speed are all increased. In present working conditions, the bubbles sliding distance is of 3–10 times of the bubble departure diameter. Based on the energy balance on bubble sliding process, the impact of bubble sliding on the characteristics of heat transfer was analyzed as well. Considering the different mechanisms effect on heat transfer, such as micro-layer evaporation, transient conduction and single-phase forced convection between fluid and wall, the ratio of every mechanism was calculated and compared. Analysis results show that the bubble with sliding movement have significant heat transfer enhancement than that of the stationary bubbles. With the proposed concept of disturbance intensity of sliding bubble, the heat flux expressions caused by disturbance of sliding bubble or stationary have been proposed.
Skip Nav Destination
18th International Conference on Nuclear Engineering
May 17–21, 2010
Xi’an, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-4932-3
PROCEEDINGS PAPER
Bubble Sliding Process on Subcooling Flow Boiling in Vertical Rectangular Narrow Channel Available to Purchase
De-wen Yuan,
De-wen Yuan
Chongqing University, Chongqing, China
Search for other works by this author on:
Liang-ming Pan,
Liang-ming Pan
Chongqing University, Chongqing, China
Search for other works by this author on:
Jing-hua Wei,
Jing-hua Wei
Chongqing University, Chongqing, China
Search for other works by this author on:
De-qi Chen
De-qi Chen
Chongqing University, Chongqing, China
Search for other works by this author on:
De-wen Yuan
Chongqing University, Chongqing, China
Liang-ming Pan
Chongqing University, Chongqing, China
Jing-hua Wei
Chongqing University, Chongqing, China
De-qi Chen
Chongqing University, Chongqing, China
Paper No:
ICONE18-30086, pp. 1037-1047; 11 pages
Published Online:
April 8, 2011
Citation
Yuan, D, Pan, L, Wei, J, & Chen, D. "Bubble Sliding Process on Subcooling Flow Boiling in Vertical Rectangular Narrow Channel." Proceedings of the 18th International Conference on Nuclear Engineering. 18th International Conference on Nuclear Engineering: Volume 4, Parts A and B. Xi’an, China. May 17–21, 2010. pp. 1037-1047. ASME. https://doi.org/10.1115/ICONE18-30086
Download citation file:
16
Views
Related Proceedings Papers
Related Articles
Numerical Simulation of Evaporating Two-Phase Flow in a High-Aspect-Ratio Microchannel with Bends
J. Heat Transfer (August,2017)
Flow Visualization and Local Measurement of Forced Convection Heat Transfer in a Microtube
J. Heat Transfer (March,2010)
A Novel Semi-Empirical Correlation for Wall Heat Transfer During Saturated Nucleate Flow Boiling
J. Heat Transfer (May,2018)
Related Chapters
Energy Balance for a Swimming Pool
Electromagnetic Waves and Heat Transfer: Sensitivites to Governing Variables in Everyday Life
Forced Convection Subcooled Boiling
Two-Phase Heat Transfer
Thermal Design Guide of Liquid Cooled Systems
Thermal Design of Liquid Cooled Microelectronic Equipment