弯曲通道内爆震波传播特性实验研究

doi:10.7527/S1000-6893.2024.30385

Abstract

Abstract:

When detonation waves propagate in curved channels， they will be influenced by the curvature of the channel. Both the compression effect near the outer wall and the diffraction effect near the inner wall cause the detonation wave front to exhibit a certain degree of curvature， making the propagation more unstable due to decoupling between the shock wave and the chemical reaction. To clarify the propagation characteristics of detonation waves in curved channels， this study investigated the effects of the equivalence ratio and the dilution ratio on the propagation of stable detonation waves by using a mixture of ethylene， oxygen， and nitrogen. The results show that in curved channels， there are differences in the decoupling mechanism between the fuel-lean and fuel-rich conditions. Under fuel-rich conditions， as the dilution ratio varied from 0.4 to 0.6， detonation waves transitioned from the regular reflection mode to the Mach growth mode. By comparing the wave velocity on the inner wall with 0.8 times the C-J velocity， three propagation modes were observed after stable detonation waves entered the curved channel， i.e.， a stable mode， a critical mode，and an unstable mode. Under fuel-lean conditions， the dilution ratio had a more significant impact on the detonation propagation mode. The critical condition of the stable detonation mode was clarified to be that the critical inner radius should be 18.6–24.2 times of the average cell sizes.

Key words: curved channel, detonation wave, equivalence ratio, dilution ratio, stable mode

CLC Number:

V231.2

Liwen CAO, Ke WANG, Ziyang XU, Xiaoyu SU, Wei FAN. Experimental study on propagation characteristics of stable detonation waves in curved channels[J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(24): 130385.

Figures/Tables 22

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

Fig.9

Fig.10

Fig.11

Fig.12

Fig.13

Fig.14

Fig.15

Fig.16

Fig.17

Fig.18

Fig.19

Fig.20

Fig.21

Fig.22

References 22

1	LEE J H S. The detonation phenomenon［M］. Cambridge： Cambridge University Press， 2008.
2	严传俊，范玮. 脉冲爆震发动机原理及关键技术［M］. 西安：西北工业大学出版社， 2005.
	YAN C J， FAN W. Principle and key technology of pulse detonation engine［M］. Xi’an： Northwestern Polytechnical University Press， 2005 （in Chinese）.
3	王健平，姚松柏. 连续爆轰发动机原理与技术［M］. 北京：科学出版社， 2018.
	WANG J P， YAO S B. Principle and technology of continuous detonation engine［M］. Beijing： Science Press， 2018 （in Chinese）.
4	刘卫东，彭皓阳，刘世杰，等. 旋转爆震燃烧及应用研究进展［J］. 航空学报， 2023， 44（15）： 528875.
	LIU W D， PENG H Y， LIU S J， et al. Research Progresses of rotating detonation combustion and its application［J］. Acta Aeronautica et Astronautica Sinica， 2023， 44（15）： 528875 （in Chinese）.
5	KINDRACKI J， WOLAN´SKI P， GUT Z. Experiment research on the rotating detonation in gaseous fuels-oxygen mixtures ［J］. Shock Waves， 2011， 21： 75-84.
6	赵明皓，王可，王致程，等. 点火方式对空桶型旋转爆震燃烧室起爆特性的影响［J］. 航空学报， 2022， 43（1）： 124870.
	ZHAO M H， WANG K， WANG Z C， et al. Effects of ignition on initiation characteristics of hollow rotating detonation combustor［J］. Acta Aeronautica et Astronautica Sinica， 2022， 43（1）： 124870 （in Chinese）.
7	YAMADA T， HAYASHI K， TSUBOI N， et al. Numerical analysis of threshold of limit detonation in rotating detonation engine［C］∥ 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. Reston： AIAA， 2010.
8	BRAUN E， DUNN N， LU F. Testing of a continuous detonation wave engine with swirled injection［C］∥ 48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. Reston：AIAA， 2010.
9	MEREDITH J， NG H D， LEE J H S. Detonation diffraction from an annular channel［J］. Shock Waves， 2010， 20（6）： 449-455.
10	KUDO Y， NAGURA Y， KASAHARA J， et al. Oblique detonation waves stabilized in rectangular-cross-section bent tubes［J］. Proceedings of the Combustion Institute， 2011， 33（2）： 2319-2326.
11	NAKAYAMA H， MORIYA T， KASAHARA J， et al. Stable detonation wave propagation in rectangular-cross-section curved channels［J］. Combustion and Flame， 2012， 159（2）： 859-869.
12	NAKAYAMA H， MORIYA T， KASAHARA J， et al. Front shock behavior of stable detonation waves propagating through rectangular cross-section curved channels［C］∥ 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. Reston： AIAA， 2012.
13	NAKAYAMA H， KASAHARA J， MATSUO A， et al. Front shock behavior of stable curved detonation waves in rectangular-cross-section curved channels［J］. Proceedings of the Combustion Institute， 2013， 34（2）： 1939-1947.
14	XIAO Q， RADULESCU M I. Dynamics of hydrogen-oxygen-argon cellular detonations with a constant mean lateral strain rate［J］. Combustion and Flame， 2020， 215： 437-457.
15	XIAO Q， SOW A， MAXWELL B M， et al. Effect of boundary layer losses on 2D detonation cellular structures［J］. Proceedings of the Combustion Institute， 2021， 38（3）： 3641-3649.
16	XIAO Q， RADULESCU M I. Role of instability on the limits of laterally strained detonation waves［J］. Combustion and Flame， 2020， 220： 410-428.
17	PAN Z H， CHEN K P， QI J， et al. The propagation characteristics of curved detonation wave： Experiments in helical channels［J］. Proceedings of the Combustion Institute， 2019， 37（3）： 3585-3592.
18	PAN Z H， QI J， PAN J F， et al. Fabrication of a helical detonation channel： Effect of initial pressure on the detonation propagation modes of ethylene/oxygen mixtures［J］. Combustion and Flame， 2018， 192： 1-9.
19	袁雪强，蒋露欣，张多，等. 爆震波通过环形通道传播模式试验研究［J］. 火箭推进， 2021， 47（6）： 101-110.
	YUAN X Q， JIANG L X， ZHANG D， et al. Experimental study on propagation mode of detonation wave in annular channel［J］. Journal of Rocket Propulsion， 2021， 47（6）： 101-110 （in Chinese）.
20	WANG Z C， WANG K， ZHAO M H， et al. Experimental investigation on the propagation characteristics of detonations in a semi-confined straight channel［J］. Experimental Thermal and Fluid Science， 2021， 123： 110329.
21	KNYSTAUTAS R， LEE J H， GUIRAO C M. The critical tube diameter for detonation failure in hydrocarbon-air mixtures［J］. Combustion and Flame， 1982， 48： 63-83.
22	MOEN I O， DONATO M， KNYSTAUTAS R， et al. The influence of confinement on the propagation of detonations near the detonability limits［J］. Symposium （International） on Combustion， 1981， 18（1）： 1615-1622.

[1]	Haotian ZHANG, Yonghui ZHANG, Pengfei MA, Yun WANG, Wei FAN. Effects of filling flow rate and equivalence ratio on flame acceleration in an obstacle channel [J]. Acta Aeronautica et Astronautica Sinica, 2025, 46(4): 130940-130940.
[2]	Haochen XIONG, Ruofan QIU, Xin HAN, Hao YAN, Tao ZHANG, Yancheng YOU. New method for detonation initiation induced by curved shock wave [J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(18): 129682-129682.
[3]	LI Chaolong, XIA Zhixun, MA Likun, ZHAO Xiang, LUO Zhenbing, DUAN Yifan. Experiment on performance of solid rocket scramjet [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2022, 43(12): 126075-126075.
[4]	YANG Li, YUE Lianjie, ZHANG Xinyu. Preliminary study on wave angle and normal velocity-curvature relation of oblique detonation wave [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2020, 41(11): 123701-123701.
[5]	XIA Zhenjuan, MA Hu, ZHUO Changfei, ZHOU Changsheng. Characteristics of unstable propagation of rotating detonation wave in plane-radial structure [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2018, 39(2): 121438-121438.
[6]	XU Can, MA Hu, LI Jian, DENG Li, YU Ling. Propagation property of flame and pressure wave in rotating detonation engine [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2017, 38(10): 121226-121226.
[7]	Wen Ming;Li Qian;Jin Xing;Ye Jifei. Effects of Focusing Angle on Laser-supported Detonation Wave in Air [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2009, 30(9): 1571-1575.
[8]	Deng Junxiang;Yan Chuanjun;Zheng Longxi;Huang Xiqiao;Jiang Lianyou. Numerical Simulation of Effect of Obstacles on Pulse Detonation Engine Performances [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2009, 30(4): 614-621.

Experimental study on propagation characteristics of stable detonation waves in curved channels

RichHTML

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 22

References 22

Related Articles 8

Recommended Articles

Metrics

Comments