A bilateral second-order synchrosqueezing transform and application to vibration monitoring of aerospace engine

Z Chen, Y Zi, Z Xiao, Y Wang… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
The synchrosqueezing transform (SST) and its ameliorated methods can enhance the
energy concentration of the vibration signals in time-frequency domain, but it does not show …

Experimental investigation of atomization and droplet turbulence characteristics of a twin-fluid nozzle with different self-excited vibrating cavity structures

B Chen, D Gao, Y Liang, J Zhao, Y Sun - Experimental Thermal and Fluid …, 2018 - Elsevier
The spray atomization properties and droplet turbulence characteristics of a twin-fluid nozzle
with and without a self-excited vibrating cavity are investigated and compared using a phase …

[PDF][PDF] 隔板对液体火箭发动机燃烧室声学模态特性的影响

张泽昊, 樊志伟, 董立宝, 何博, 聂万胜 - Journal of Aerospace Power, 2024 - jasp.com.cn
通过采用声学有限元法, 求解带有平均流源项的亥姆霍兹方程, 进而在考虑燃烧室高温,
平均流场因素基础上分析了隔板结构参数对液体火箭发动机燃烧室声学模态特性影响规律 …

The acoustic transfer impedance of baffled injectors in three-dimensional combustion chambers

S Zhu, Y Liu, X Liang, J Li, L Yang, X Sun… - Aerospace Science and …, 2022 - Elsevier
Baffled injectors are typical passive control devices to restrain combustion instabilities in
liquid rocket engines. However, there still has been no appropriate model to describe the …

Effect of the inner surface baffles on acoustic characteristics in the combustion chamber

H Salarvand, AR Shateri, AA Nadooshan… - Journal of Vibration …, 2022 - Springer
Purpose One of the issues with combustion chambers is combustion instability, which affects
the performance of the system. The influence of various baffle designs on the acoustic …

Theoretical and experimental investigations on the acoustic absorptions of baffled injectors

S Zhu, J Li, W Liu, T Liu, L Yang - AIAA Journal, 2021 - arc.aiaa.org
Baffled injectors are widely used to restrain transverse combustion instabilities in liquid
rocket engines. However, there is still a lack of theoretical research on the attenuation …

Effect of longitudinal baffled blades on the first-order tangential acoustic mode in cylindrical chamber

R Duan, H Zhang, Y Zhang, L Liu, L Tian, X Zhang - Energy, 2019 - Elsevier
The combustion instability has been an ubiquitous problem for more than a century,
especially for the first-order tangential modes. In this mode, the heat transfer rates may be …

Numerical study of the effect of the corrugated baffle on the acoustic characteristics of the combustion chamber

H Salarvand, AR Shateri… - Acta …, 2022 - acta-acustica.edpsciences.org
Combustion instability caused by the amplification of sound waves is called acoustic or high-
frequency instability, which can cause severe damage to the system. Adding baffles is one of …

[PDF][PDF] Acoustic analysis of a liquid rocket engine: Approaches for treatment of nozzle flow

P Kekus - Proceedings of the 28th International Congress on …, 2022 - researchgate.net
The acoustic characteristics of a liquid-propellant rocket engine, utilising high-test peroxide
and ethanol as the bipropellant, were studied using numerical simulations with constant …

A Heterogeneous Time-Tracking Fusion and Application to Health Evaluation of Aerospace Engines

Z Chen, Y Gao, Y Zi, M Zhang, C Li… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Heterogeneous information fusion has long been a difficult problem due to the differences in
the representation and feature of various physical information. Besides, the multisensor …