| 用序列脉冲激光等离子体示踪方法测量非定常流的速度——时间变化 |
| |
| 引用本文： | 李鸿志,王莹,林太基,郭建国,张勇.用序列脉冲激光等离子体示踪方法测量非定常流的速度——时间变化[J].实验力学,1992,7(4). |
| |
| 作者姓名： | 李鸿志 王莹 林太基 郭建国 张勇 |
| |
| 作者单位： | 华东工学院，华东工学院，华东工学院，华东工学院，华东工学院 |
| |
| 摘 要： | 本文在 Chen 和 G.Klingenberg 提出的激光电离原理的基础上,发展了一种用序列脉冲激光形成一组等离子体示踪测量气流速度—时间曲线的新方法。在已完成的测量中,速度范围可达120m/s～2300m/s,相对误差为2.3%.本文对等离子体示踪特性进行了详细讨论.这种方法特别适合于高超音速非定常流场,已研制成完整的测量系统 LVG-1。
|
| 关 键 词： | 非定常流 速度测量 等离子体 |
Measurement of Velocity-time Relation in Unsteady Flow by using Plasma Tracers Formed from Sequential Pulse Laser |
| |
| Li Hongzhi Wang Ying Lin Taiji Guo Jianguo Zhang Yong.Measurement of Velocity-time Relation in Unsteady Flow by using Plasma Tracers Formed from Sequential Pulse Laser[J].Journal of Experimental Mechanics,1992,7(4). |
| |
| Authors: | Li Hongzhi Wang Ying Lin Taiji Guo Jianguo Zhang Yong |
| |
| Institution: | East China Institute of Technology |
| |
| Abstract: | Based on Chen-Klingenberg's laser-induced gas break down theory,a novel method is developed to trace and measure velocity-time relation of certain gas flow.This method is made use of a group of plasma produced by sequential pulse laser.In our tests, velocity range varies from 120 to 2300m/s with a relative error of 2.3 percent.The tracing characteristics of plasma is discussed in detail.This method is especially good for measuring unsteady hypersonic flow field.An integrated measuring system LVG-1 has been devel- oped. |
| |
| Keywords: | unsteady flow velocity measurement plasma |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《实验力学》浏览原始摘要信息 |
| 点击此处可从《实验力学》下载免费的PDF全文 |
