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CLC number: V231

On-line Access: 2020-06-11

Received: 2019-08-14

Revision Accepted: 2020-01-02

Crosschecked: 2020-07-15

Cited: 0

Clicked: 2109

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Zhi-di Lei

https://orcid.org/0000-0003-2520-8302

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Journal of Zhejiang University SCIENCE A 2020 Vol.21 No.9 P.734-744

http://doi.org/10.1631/jzus.A1900383


Performance of rotating detonation engine with stratified injection


Author(s):  Zhi-di Lei, Xiao-quan Yang, Jue Ding, Pei-fen Weng, Xun-nian Wang

Affiliation(s):  Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai Institute of Applied Mathematics and Mechanics, School of Mechanics and Engineering Science, Shanghai University, Shanghai 200072, China; more

Corresponding email(s):   quanshui@shu.edu.cn, dingjue_lu@shu.edu.cn

Key Words:  Rotating detonation engine, Injection pattern, Propulsion performance, Instability


Zhi-di Lei, Xiao-quan Yang, Jue Ding, Pei-fen Weng, Xun-nian Wang. Performance of rotating detonation engine with stratified injection[J]. Journal of Zhejiang University Science A, 2020, 21(9): 734-744.

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author="Zhi-di Lei, Xiao-quan Yang, Jue Ding, Pei-fen Weng, Xun-nian Wang",
journal="Journal of Zhejiang University Science A",
volume="21",
number="9",
pages="734-744",
year="2020",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1900383"
}

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%T Performance of rotating detonation engine with stratified injection
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%A Xiao-quan Yang
%A Jue Ding
%A Pei-fen Weng
%A Xun-nian Wang
%J Journal of Zhejiang University SCIENCE A
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%P 734-744
%@ 1673-565X
%D 2020
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1900383

TY - JOUR
T1 - Performance of rotating detonation engine with stratified injection
A1 - Zhi-di Lei
A1 - Xiao-quan Yang
A1 - Jue Ding
A1 - Pei-fen Weng
A1 - Xun-nian Wang
J0 - Journal of Zhejiang University Science A
VL - 21
IS - 9
SP - 734
EP - 744
%@ 1673-565X
Y1 - 2020
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A1900383


Abstract: 
In this study, a numerical study based on Euler equations and coupled with detail chemistry model is used to improve the propulsion performance and stability of the rotating detonation engine. The proposed fuel injection called stratified injection functions by suppressing the isobaric combustion process occurring on the contact surface between fuel and detonation products, and thus the proportion of fuel consumed by detonation wave increases from 67% to 95%, leading to more self-pressure gain and lower entropy generation. A pre-mixed hydrogen-oxygen-nitrogen mixture is used as a reactive mixture. The computational results show that the propulsion performance and the operation stability of the engine with stratified injection are both improved, the temperature of the flow field is notably decreased, the specific impulse of the engine is improved by 16.3%, and the average temperature of the engine with stratified injection is reduced by 19.1%.

旋转爆轰发动机中的燃料分层喷注方法

目的:通过优化燃料喷注,提高旋转爆轰发动机的推进稳定性和推进效率.
创新点:提出了燃料分层喷注的新方法,降低了燃料提前燃烧比率和燃烧室平均温度,进而有效地提高了旋转爆轰波的稳定性和发动机的比冲.
方法:以数值模拟为手段,应用基元反应建立化学非平衡流动的数学物理模型,开展发动机推进性能优化研究.
结论:1. 研究证实了燃料的提前燃烧现象是发动机推进性能的损失机制之一; 2. 提出的燃料分层喷注方法可以有效提高燃料以爆轰形式组织燃烧的比例,并提高发动机比冲.

关键词:旋转爆轰发动机; 燃料喷注模式; 推进性能; 推进稳定性

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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