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Investigations on Complex Acoustic Modes of Rocket Engines Combustion Chambers for Damping Allocation [PDF]
Journal of Aerospace Technology and Management, 2021 Combustion instability can severely impair the operation of many kinds of combustion engines. Acoustic resonators are widely used to suppress the pressure oscillations caused by the coupling between the combustion process and the combustion chamber ...
Gustavo Paulinelli Guimarães +3 more
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Aerospace, 2023 Supersonic combustion instability studies are crucial for the future maturation of scramjet engines. In the present paper, the supersonic combustion instability in a strut-based scramjet combustor is investigated through large eddy simulation and dynamic
Yuwei Cheng +3 more
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Influence of Flow Rate Distribution on Combustion Instability of Hypergolic Propellant
Aerospace, 2022 Combustion instability is the biggest threat to the reliability of liquid rocket engines, whose prediction and suppression are of great significance for engineering applications.
Yushan Gao +4 more
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Effect of Mixing Section Acoustics on Combustion Instability in a Swirl-Stabilized Combustor
Energies, 2022 An experimental study was performed to investigate the characteristics of two different combustion instability modes in a swirl-stabilized combustor. The first is the eigenfrequency corresponding to the half-wave of the combustion chamber section, and ...
Donghyun Hwang +2 more
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A Real-Time Combustion Instability Simulation with Comprehensive Thermo-Acoustic Dynamic Model
Energies, 2018 The thermo-acoustic instability in the combustion process of a gas turbine is caused by the interaction of the heat release mechanism and the pressure perturbation.
Jaeyoung Han +3 more
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Journal of Low Frequency Noise, Vibration and Active Control, 2023 Accurate prediction of thermoacoustic instability is a prerequisite for thermoacoustic control to avoid the damage of combustion chamber, however, this problem has not been completely solved yet.
Qingwen Zeng +5 more
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Aerospace, 2023 Combustion instability constitutes the primary loss source of combustion chambers, gas turbines, and aero engines, and it affects combustion performance or results in a sudden local oscillation.
Nan Meng, Feng Li
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Acta Acustica, 2022 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 the methods of passive instability control.
Salarvand Hamid +3 more
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Effect of the Air Flow on the Combustion Process and Preheating Effect of the Intake Manifold Burner
Energies, 2022 Diesel engines show poor performance and high emissions under cold-start conditions. The intake manifold burner is an effective method to increase the intake air temperature and improve engine performance.
Zhishuang Li +3 more
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Numerical Simulation Study on the Dynamics of Bluff-Body Flames under Oxygen-Lean Conditions
Energies, 2023 As modern aeroengine combustors advance towards high temperatures, afterburners are inevitably affected by diminished oxygen content in incoming flows, thus affecting combustion efficiency, instability, and flammability limits. In this study, the dynamic
Fuquan Deng +7 more
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