短脉冲激光作用下丙酮液池的沸腾研究  

Study on Acetone Pool Boiling under Pulse-Laser Heating

作　　者：金仁喜[1] 华顺芳[1] 刘登瀛[2] 张正芳[2] 张长梅[2] 

机构地区：[1]海军工程大学动力工程学院 [2]中国科学院工程热物理研究所

出　　处：《海军工程大学学报》2000年第3期5-8,,12,,共5页Journal of Naval University of Engineering

基　　金：中国科学院"九五"基础性研究重大项目基金资助! (KJ951- B1- 70 4 )

摘　　要：采用短脉冲激光加热浸没在丙酮液体里的铂金属薄膜的实验方法并结合数值模拟计算 ,研究了高温升率条件下丙酮液体温度场随时间的变化规律及汽泡行为 ,得出了丙酮液池温度边界层的数量级大约为 4 0～ 70μm,确定了铂镀层表面的反射损失 ,认为薄汽膜的形成和热边界层外移 。Pulsed laser heats the small platinum film which is immersed in acetone so that acetone can attain an extremely high rate of temperature rise. The acetone′s temperature time curve and its bubble behavior are studied by above experiment and numerical calculation. Acetone′s heat layer is about 40~70μm on the condition of this experiment. It shows that acetone vapor bubble still grows long after laser pulse finished for reasons of the formation of small vapor film,and that heat layer becomes thicker. It gets the loss of laser reflection on the surface of platinum film.

关 键 词：短脉冲激光 丙酮 沸腾 数值模拟 传热 

分 类 号：TK124[动力工程及工程热物理—工程热物理]