Accelerated initiation of oblique detonation induced by disturbance in detonative zone

ZHANG, Yichen; XIANG, Gaoxiang; YU, Jia; JIN, Ke; GOH, Kek Boon

doi:10.1016/j.cja.2023.09.031

Chinese Journal of Aeronautics

2023

DOI: 10.1016/j.cja.2023.09.031

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Accelerated initiation of oblique detonation induced by disturbance in detonative zone

Yichen ZHANG,

Gaoxiang XIANG,

Jia YU

et al.

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2024

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Cited by 3 publications

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Investigations on the initiation characteristics of radical-assisted oblique detonation waves generated by plasma discharges

Zhang,

Xiang

2024

Aerospace Science and Technology

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Investigations on the initiation characteristics of radical-assisted oblique detonation waves generated by plasma discharges

Zhang,

Xiang

2024

Aerospace Science and Technology

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Enhancing detonation propulsion with jet in cross-flow: A comprehensive review

Zhang

2024

Progress in Aerospace Sciences

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Flow characteristics and propulsive performance of oblique detonation waves induced by a transverse jet

Han,

Qiu,

You

2024

Physics of Fluids

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The initiation of oblique detonation waves (ODWs) is a key component of the successful application of oblique detonation wave engines (ODWEs). This paper numerically investigates the initiation of ODWs under the active control of a transverse jet by solving the two-dimensional multi-species Euler equations, focusing on the morphology of the flow fields as well as the relationship between the flow structures and propulsive performance using the concept of thrust potential. Active jet control significantly shortens the initiation length of the ODW. The results reveal that the jet-induced flow field shows four typical patterns depending on the jet momentum flux ratio and wedge angle: shock-induced combustion, a type I pattern, a type II pattern, and a type I-II pattern. For the jet-induced ODW flow field, the propulsive performance declines as the momentum flux ratio increases when the wedge angle is certain. The larger the wedge angle, the greater the magnitude of the decline. The thrust of the flow field consists of two main components: the thrust generated by the mixture that passes first through the oblique shock wave and then through the detonation wave, and the thrust generated by the mixture that passes directly through the ODW front. Since the ODW upstream front has a larger wave angle, the flow loss of the mixture passes through the ODW upstream front is higher and the thrust potential is lower. This work could guide the active control of the initiation of ODWs at low flow losses.

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Accelerated initiation of oblique detonation induced by disturbance in detonative zone

Cited by 3 publications

References 49 publications

Investigations on the initiation characteristics of radical-assisted oblique detonation waves generated by plasma discharges

Investigations on the initiation characteristics of radical-assisted oblique detonation waves generated by plasma discharges

Enhancing detonation propulsion with jet in cross-flow: A comprehensive review

Flow characteristics and propulsive performance of oblique detonation waves induced by a transverse jet

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