电热破膜激波管及其PLIF测量系统的研制  

Development of an electro-heating diaphragm rupture structure and PLIF measurement system for a shock tube

作　　者：王高峰[1] 林其钊[1] 马承飙[1] 廖钦[1] 郭俊福[1] 

机构地区：[1]中国科学技术大学热科学和能源工程系,合肥230026

出　　处：《实验流体力学》2009年第1期65-69,88,共6页Journal of Experiments in Fluid Mechanics

基　　金：国家863计划资助项目(2006AA05Z210);中科院研究生创新基金资助项目

摘　　要：探讨了用Nd:YAG脉冲激光器作为泵浦光源对激波管内瞬态非定常流场进行平面激光诱导荧光(Planarlaser induced fluorescence,PLIF)测量的时序同步问题。由于该激光器需要预热以获得稳定的倍频输出,作者研制了低压大电流的电热破膜装置,实现对激波产生时机的控制。在大尺寸矩形截面的激波管上搭建了PLIF测量平台,并在此平台上进行了丙酮示踪流场显示和氢氧基分布测量。Timing synchronization of Nd：YAG-laser-pumped planar laser induced fluorescence measurements for shock tube experiments is discussed. As the pump laser should warm up to acquire stable double-frequency output, an electro-heating diaphragm bursting structure to control the shock arrival time to optical window was developed. A PLIF measurement platform was established for a large-inner-dimension rectangular shock tube, in which measurements of acetone flow visualization and OH radical distribution was conducted.

关 键 词：平面激光诱导荧光 激波管 电热破膜 流场显示 氢氧基 弱点火 

分 类 号：V211.751[航空宇航科学与技术—航空宇航推进理论与工程]