Coupling effect between film boiling heat transfer and evaporation drag around a hot-particle in cold liquid  

作　　者：LI Xiao-Yan, YANG Yan-Hua, XU Ji-Jun(Department of Nuclear Science and System Engineering, School of Mechanics and Power Engineering, Shanghai Jiaotong University, Shanghai 200030) 

出　　处：《Nuclear Science and Techniques》2003年第3期206-211,共6页核技术（英文）

基　　金：Supported by National Natural Science Fund(No.50046026)

摘　　要：Extremely rapid evaporation could occur when high-temperature particles contact withlow-temperature liquid. This kind of phenomenon is associated with the engineering safety and the problems inhigh-transient multi-phase fluid and heat transfer. The aim of our study was to design and build an observable ex-periment facility. The first series of experiments were performed by pouring one or six high-temperature particles intoa low saturated temperature liquid pool. The particle's falling-down speed was recorded by a high-speed camera, thuswe can find the special resistant feature of the moving high-temperature particles, which is induced by the high-speedevaporation surrounding the particles. The study has experimentally verified the theory of evaporation drag model.Extremely rapid evaporation could occur when high-temperature particles contact withlow-temperature liquid. This kind of phenomenon is associated with the engineering safety and the problems in high-transient multi-phase fluid and heat transfer. The aim of our study was to design and build an observable experiment facility. The first series of experiments were performed by pouring one or six high-temperature particles into a low saturated temperature liquid pool. The particle's falling-down speed was recorded by a high-speed camera, thus we can find the special resistant feature of the moving high-temperature particles, which is induced by the high-speed evaporation surrounding the particles. The study has experimentally verified the theory of evaporation drag model.

关 键 词：耦合效应 薄膜状沸腾 热传导 蒸汽爆炸 工程安全 

分 类 号：O552.6[理学—热学与物质分子运动论]