连续旋转爆震波传播过程研究(Ⅰ):同向传播模式

推进技术 ›› 2014, Vol. 35 ›› Issue (1): 138-144.

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连续旋转爆震波传播过程研究(Ⅰ):同向传播模式

刘世杰,刘卫东,林志勇,林伟

国防科技大学高超声速冲压发动机技术重点实验室,湖南长沙 410073;国防科技大学高超声速冲压发动机技术重点实验室,湖南长沙 410073;国防科技大学高超声速冲压发动机技术重点实验室,湖南长沙 410073;国防科技大学高超声速冲压发动机技术重点实验室,湖南长沙 410073

发布日期:2021-08-15
作者简介:刘世杰(1983—),男,博士,研究领域为爆震燃烧机理及其应用。E-mail:lsjnudt@gmail.com
基金资助:
国家自然科学基金(91216120)。

Research on Continuous Rotating Detonation Wave Propagation Process(Ⅰ):One Direction Mode

Science and Technology on Scramjet Laboratory,National University of Defense Technology, Changsha 410073,China;Science and Technology on Scramjet Laboratory,National University of Defense Technology, Changsha 410073,China;Science and Technology on Scramjet Laboratory,National University of Defense Technology, Changsha 410073,China;Science and Technology on Scramjet Laboratory,National University of Defense Technology, Changsha 410073,China

Published:2021-08-15

摘要/Abstract

摘要： 通过改变空气、氢气质量流量,在大工况范围内开展了H₂/Air连续旋转爆震试验,结合高频压力测量和高速摄影观测手段,重点分析了同向传播模式下的爆震波传播过程。在该模式下爆震波头个数随推进剂总流量的增大而增多,但同一时刻所有爆震波头的传播方向相同。试验发现了单波、混合单/双波、双波三种连续旋转爆震波传播模态,三种模态分别对应一定的试验工况范围。单波模态下的爆震波传播主频为5.05~5.8kHz,平均传播速度为1510~1735m/s；双波模态下的爆震波传播主频为8.6~9.9kHz,平均传播速度为1280~1480m/s；而在混合单/双波模态下,在试验过程中爆震波头个数会发生变化。当试验工况位于工况范围中间时,单、双波模态下的爆震波传播过程比较稳定,不会改变传播方向；而当试验工况位于工况范围边界时,发现了连续旋转爆震波改变传播方向的现象。 

关键词: 连续旋转爆震波;同向传播模式;单波模态;双波模态;混合单/双波模态 

Abstract: Through changing the mass flow rates of air and hydrogen, H₂/Air continuous rotating detonation wave has been realized in a wide range of test conditions. Based on the PCB and observation results, the detonation wave propagation process of one-direction rotating mode has been analyzed. For this rotating mode, the number of detonation waves is mainly influenced by the total mass flow rate of the propellant, and all the detonation waves propagate along the same direction at the same time. There are three kinds of propagation mode:one-wave, two-wave and hybrid one/two wave, which have their corresponding test condition domains. The detonation wave propagation frequency of one-wave and two-wave mode are in the ranges of 5.05~5.8kHz and 8.6~9.9kHz respectively, with the mean rotating velocity of 1510~1735m/s and 1280~1480m/s, respectively. For the hybrid one/two wave mode, the number of detonation waves changes during the test process. When the test condition locates in the middle of the condition domains of one-wave and two-wave modes, the detonation wave propagates stably. Otherwise, the propagation direction may change during the test process. 

Key words: Continuous rotating detonation wave; One-direction mode; One-wave mode; Two-wave mode;Hybrid one/two wave mode

刘世杰,刘卫东,林志勇,林伟. 连续旋转爆震波传播过程研究(Ⅰ):同向传播模式[J]. 推进技术, 2014, 35(1): 138-144.

LIU Shi-jie, LIU Wei-dong, LIN Zhi-yong, LIN Wei. Research on Continuous Rotating Detonation Wave Propagation Process(Ⅰ):One Direction Mode[J]. Journal of Propulsion Technology, 2014, 35(1): 138-144.

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连续旋转爆震波传播过程研究(Ⅰ):同向传播模式

Research on Continuous Rotating Detonation Wave Propagation Process(Ⅰ):One Direction Mode

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