| 环截面管中的爆燃转爆震实验 |
| |
| 引用本文： | 于军力,秦亚欣,高歌. 环截面管中的爆燃转爆震实验[J]. 航空动力学报, 2010, 25(8): 1733-1737 |
| |
| 作者姓名： | 于军力 秦亚欣 高歌 |
| |
| 作者单位： | 北京航空航天大学,能源与动力工程学院,航空发动机气动热力科技重点实验室,北京,100191;北京航空航天大学,能源与动力工程学院,航空发动机气动热力科技重点实验室,北京,100191;北京航空航天大学,能源与动力工程学院,航空发动机气动热力科技重点实验室,北京,100191 |
| |
| 摘 要： | 为了实现在环截面爆震管封闭端同时点火,采用了先在预燃室中点火,再通过八路支管将火焰引入到爆震管封闭端,各个支管长度一样,因此可看成在环管封闭端多点同时点火.实验结果显示,在爆震管封闭端火焰汇聚形成激波点火,可在环管封闭端附近直接产生爆震波.在爆震管中安放扰流片时,流动阻力使爆震速度偏低,无扰流片时,爆震速度接近理论值.不加扰流片当量比在1.0左右,火焰速度会出现爆燃或爆震两种随机状态,当量比到1.1时可避免这种状况.
|
| 关 键 词： | 爆燃 爆震 爆燃向爆震转捩 聚心火焰 激波 |
| 收稿时间： | 2010-04-26 |
| 修稿时间： | 2010-06-07 |
Experimental investigations of deflagration to detonation transition in toroidal section tube |
| |
| YU Jun-li,QIN Ya-xin and GAO Ge. Experimental investigations of deflagration to detonation transition in toroidal section tube[J]. Journal of Aerospace Power, 2010, 25(8): 1733-1737 |
| |
| Authors: | YU Jun-li QIN Ya-xin GAO Ge |
| |
| Affiliation: | National Key Laboratory of Science and Technology on Aero-Engines, School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
| |
| Abstract: | In order to implement ignition at the same time at closed end of toroidal detonation tube,a way of ignition at a point and several branches of the same length was used.The results show that detonation wave can be formed immediately through shock produced by converging flame at the closed end of tube.With obstacles,the velocity of detonation will be decreased due to flow drag.Without obstacles,the velocity of detonation is close to the theory value.At about equivalence ratio 1.0,the flame velocity without obstacles may generate deflagration or detonation at random.And this random state can be avoided at equivalence ratio 1.1. |
| |
| Keywords: | deflagration detonation deflagration to detonation transition implosion flame shock |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《航空动力学报》浏览原始摘要信息 |
|
点击此处可从《航空动力学报》下载全文 |
|
