短脉冲激光作用下丙酮液池的温度场计算  

Temperature Calculation in Acetone Pool Under Short Pulsed Laser - heated

作　　者：金仁喜[1] 华顺芳[1] 刘登瀛[2] 张正芳[2] 

机构地区：[1]海军工程大学动力学院工程热物理教研室,武汉430033 [2]中国科学院工程热物理研究所,北京100080

出　　处：《应用激光》2001年第1期27-30,共4页Applied Laser

基　　金：中国科学院"九五"基础性研究重大项目基金资助!(项目号:KJ951-B1-704)

摘　　要：采用短脉冲激光加热浸没在丙酮液体里的钥薄膜电阻，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，得到丙酮液池温度过界层的数量级大约为３０～４０μｍ。认为薄汽膜的形成和热边界层外移是激光脉冲过后很长一段时间内汽泡依然长大的主要原因，确定了铂薄膜电阻的激光反射损失。Extremely small platinum film that is immersed in acetone pool is heated by short pulsed laser. Acetone temperature variations and its boiling bubble behavior are studied experimentally and by two - dimensional heat conduction numerical simulation. It shows that the thermal boundary layer in acetone is an order of 30 ~ 40μm, and the formation of vapor and thermal boundary layer being thicker are the main reasons that vapor bubble still grows up long after laser pulse shorts. Laser reflection loss by platinum film is calculated.

关 键 词：短脉冲激光 丙酮 温度场 计算 液池 

分 类 号：TQ224.223[化学工程—有机化工]