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题名: An analysis of turbulent film boiling on a sphere with variable wall temperature
作者: Hai-Ping Hu
贡献者: 國立臺灣海洋大學:輪機工程學系
关键词: variation wall temperature;vapor;radiatio
日期: 2008-08-01
上传时间: 2011-10-20T08:34:20Z
出版者: Journal of Mechanical Engineering Science
摘要: Abstract:The present theoretical study investigates turbulent film boiling on a sphere immersed in a stagnant saturated liquid. By assuming the cosine function, the condition of variable wall temperature is expressed. The study includes the analysis of non-linear vapour velocity, vapour temperature, thermal property, and Eddy diffusivity in the vapour film; the radiation effect, temperature ratio, and the Rayleigh number are all considered. The result shows that in a free-convection film, when film boiling has higher Rayleigh number, the turbulent film boiling has a better heat transfer efficiency than the laminar one. Finally, a comparison between the results of the present study and those reported in previous studies is presented. It is found that a good agreement exists between them.
關聯: 222(8), pp.1515-1521
URI: http://ntour.ntou.edu.tw/handle/987654321/26168
显示于类别:[輪機工程學系] 期刊論文

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