Rapid transient explosive boiling of binary mixture under pulsed-laser irradiation  

作　　者：淮秀兰 刘登瀛 董兆一 金仁喜 王国祥 

机构地区：[1]Institute of Engineering Thermophysics, Chinese Academy of Sciences,Beijing 100080, China [2]Department of Mechanical Engineering, The University of Akron, Akron, Ohio 44325-3903, USA

出　　处：《Science China(Technological Sciences)》2003年第5期490-497,共8页中国科学（技术科学英文版）

基　　金：This work was supported by the State Key Fundamental Research Plan of China(No.G2000026305);the National Natural Science Foundation of China(Grant No.50276060);the Institute of Engineering Thermophysics,the Chinese Academy of Sciences.

摘　　要：Rapid transient explosive boiling of mixed ethanol and acetone of different volume fractions were investigated experimentally. The temperature of the metal film surface irradiated by a pulse laser was measured by a fast-response measurement system with a platinum film resistor. The behaviors of bubbles, including their formation, growth, departure and floating-up, were observed and captured by a microscope camera system. It was found that bubble nucleation temperature depends strongly on the heating rate. Some special characteristics different from those of conventional boiling were revealed, and the factors affecting explosive boiling were studied.Rapid transient explosive boiling of mixed ethanol and acetone of different volume fractions were investigated experimentally. The temperature of the metal film surface irradiated by a pulse laser was measured by a fast-response measurement system with a platinum film resistor. The behaviors of bubbles, including their formation, growth, departure and floating-up, were observed and captured by a microscope camera system. It was found that bubble nucleation temperature depends strongly on the heating rate. Some special characteristics different from those of conventional boiling were revealed, and the factors affecting explosive boiling were studied.

关 键 词：PULSED laser  MIXTURE medium  EXPLOSIVE boiling  temperature measurement. 

分 类 号：O552.6[理学—热学与物质分子运动论]