Effects of ignition on initiation characteristics of hollow rotating detonation combustor

被引：0

作者：

Zhao M. ^{[1
]}

Wang K. ^{[2
]}

Wang Z. ^{[1
]}

Zhu Y. ^{[1
]}

Yu X. ^{[1
]}

Fan W. ^{[1
]}

机构：

[1] School of Power and Energy, Northwestern Polytechnical University, Xi'an

[2] Shaanxi Key Laboratory of Thermal Sciences in Aeroengine System, Northwestern Polytechnical University, Xi'an

来源：

Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2022年 / 43卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Hollow combustor; Ignition; Initiation process; Propagating direction; Rotating detonation;

D O I：

10.7527/S1000-6893.2020.24870

中图分类号：

学科分类号：

摘要：

To investigate the initiation process and operating characteristics of rotating detonation waves in the hollow combustor, the initiation and propagation of rotating detonation waves of three ignition methods, i.e., spark plug ignition, vertical pre-detonation tube ignition, and tangential pre-detonation tube ignition, were studied. Ethylene and oxygen-enriched air were used as fuel and oxidizer, respectively. Experimental results indicate that the rotating detonation waves were able to be initiated and propagated steadily with the three ignition methods, which seem to have little influence on the propagating direction of rotating detonation waves. Compared with the results of spark plug ignition, stable detonations were available with a wider range of mass flow rate when adopting vertical and tangential pre-detonation tube ignition. The obtained average propagating velocities of rotating detonations were almost consistent for all the three cases. When the pre-detonation tube was used, the initiation time of rotating detonation wave was obviously shorter and less discrete than that of spark plug ignition. © 2022, Beihang University Aerospace Knowledge Press. All right reserved.

引用

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