煤油两相连续旋转爆震燃烧室工作特性试验研究

推进技术 ›› 2017, Vol. 38 ›› Issue (2): 471-480.

• 电推进和其它推进 • 上一篇

煤油两相连续旋转爆震燃烧室工作特性试验研究

王迪¹,周进²,林志勇²

西昌卫星发射中心，四川西昌 615600,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:王迪，男，硕士生，研究领域为高超声速推进技术。
基金资助:
国家自然科学基金(NSFC51476186；NSFC91441201)。

Experimental Investigation on Operating Characteristics of Two-Phase Continuous Rotating Detonation Combustor Fueled by Kerosene

Xichang Satellite Launch Center, Xichang 615600, China,Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China and Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China

Published:2021-08-15

摘要/Abstract

摘要： 为了深入分析煤油燃料两相连续旋转爆震燃烧室的工作特性，采用富氧空气或氧气为氧化剂，通过试验得到爆震波的时域、频域特征，对两相连续旋转爆震燃烧室中爆震波的起爆过程和稳定后的传播过程进行研究。利用基于激光散射相位多普勒分析(PDA)技术对雾化流场进行了测量，得到喷注器出口不同平面处煤油液滴速度与直径的统计分布。试验结果表明当煤油流量为78g/s，氧气流量为224.0g/s，空气流量为72.5g/s，当量比为1.083时，燃烧室在单波模态下工作，爆震波传播频率为0.904kHz，平均转速为649m/s。使用氧气作为氧化剂，当煤油流量为81.8g/s，氧气流量为231.8g/s，当量比为1.222时，燃烧室在双波模态下工作，爆震波传播频率为5.882kHz，平均转速为1848m/s，传播过程中表现出很强的非定常性。在当量比为0.805 ~ 0.908的富氧工况下，随着氧化剂中含氧量的增加，爆震波的速度逐步增大，最终达到2440m/s；在当量比为1.057 ~ 1.220的富燃工况下，随含氧量的增加爆震波速度呈现线性增长的特征。

关键词: 两相连续旋转爆震燃烧室；煤油；雾化流场；时域/频域分析；工作特性

Abstract: To analyze operating characteristics of two-phase continuous rotating detonation combustor fueled by kerosene more deeply，the time/frequency-domain characteristics of ignition and propagation processes in the combustor were acquired with experimental method when the oxidizer was air with more oxygen or pure oxygen. The droplet velocity and diameter distribution in different planes out of the injector were measured with the PDA system. The experimental results show that when the mass flow rates of kerosene，O₂ and air are 78.0g/s，224.0g/s and 72.5g/s，and the equivalent ratio of 1.083 respectively，the combustor steadily works in single-wave mode，and the detonation wave has an average frequency of 0.904kHz and an average velocity of 649m/s. When the mass flow rates of kerosene and O₂ are 81.8g/s and 231.8g/s，and the equivalent ratio of 1.222 respectively，the combustor works in double-wave mode，where the detonation waves have an average frequency of 5.882kHz and an average velocity of 1848m/s，and the propagation process shows strong unsteadiness when the oxidizer is pure oxygen. The detonation velocity increases with the rise of oxygen content in oxidant when the equivalent ratio ranges from 0.805 to 0.908，reaching 2440m/s. As the equivalent ratio ranges from 1.057 to 1.220，the detonation velocity increases linearly with the rise of oxygen content.

Key words: Two-phase continuous rotating detonation combustor；Kerosene；Atomization flow field；Time-domain and frequency-domain analysis；Operating characteristics

王迪,周进,林志勇. 煤油两相连续旋转爆震燃烧室工作特性试验研究[J]. 推进技术, 2017, 38(2): 471-480.

WANG Di¹,ZHOU Jin²,LIN Zhi-yong². Experimental Investigation on Operating Characteristics of Two-Phase Continuous Rotating Detonation Combustor Fueled by Kerosene[J]. Journal of Propulsion Technology, 2017, 38(2): 471-480.

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煤油两相连续旋转爆震燃烧室工作特性试验研究

Experimental Investigation on Operating Characteristics of Two-Phase Continuous Rotating Detonation Combustor Fueled by Kerosene

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