Results 11 to 20 of about 3,583 (262)

Experimental Investigation on Pressure and Flame Surface Oscillation in a Dual-Cavity Scramjet Combustor

Energies
Pressure and flame surface oscillations are common in supersonic combustion instability. Understanding the characteristics, generation, maintenance, and interaction mechanisms of these oscillations is crucial. An experimental setup with an alcohol heater
Wenhao Liao, Yidan Chen, Ningfei Wang
doaj   +2 more sources

Numerical Study of Knocking Combustion in a Heavy-Duty Engine under Plateau Conditions

Energies, 2022
Diesel engine combustion becomes very rough and can lead even lead to deflagration under high altitude conditions, which is harmful to component durability.
Haiying Li, Xiaoqin Zhang, Chaofan Li, Rulou Cao, Weiqing Zhu, Yaozong Li, Fengchun Liu, Yufeng Li   +7 more
doaj   +2 more sources

Experimental Study on Flame Response Characteristics of a Non-Premixed Swirl Model Combustor

Energies, 2023
Non-premixed swirl combustion has been widely used in pieces of industrial combustion equipment such as industrial boilers, furnaces, and certain specific gas turbine combustors.
Chen Yang, Yong Liu, Xiang Zhang, Hao Li, Xinkun Ge, Feng Jin, Chongyang Liu   +6 more
doaj   +2 more sources

Numerical Simulation of Transient Combustion and the Acoustic Environment of Obstacle Vortex-Driven Flow

Energies, 2022
Solid fuel combustion in a chamber does not necessarily occur at a constant rate and may show fluctuations due to variables such as varying burning rates, chamber pressure, and residual combustion.
Afaque Ahmed Bhutto, Khanji Harijan, Mukkarum Hussain, Syed Feroz Shah, Laveet Kumar   +4 more
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Investigation of temporal variation of combustion instability intensity in a back step combustor using LES

Journal of Thermal Science and Technology, 2020
Lean combustion is susceptible to combustion instabilities, especially pressure oscillation, and this severely damages the combustor. To prevent this, many studies have attempted to elucidate this phenomenon.
Jun NAGAO, Abhishek L. PILLAI, Ryoichi KUROSE   +2 more
doaj   +1 more source

Numerical Study of Pipeline Distribution Effect on the Performance of Pasty Propellant Rocket Motor

Space: Science & Technology, 2023
This paper reports the numerical research on PPRM (pasty propellant rocket motor) through computational fluid dynamics simulation along with pipeline design comparison based on simulation results.
Renjie Hu, Weizong Wang
doaj   +1 more source

Simultaneous OH PLIF/Chemiluminescence and stereoscopic PIV measurements of combustion oscillation onset in turbulent swirling lean premixed flames

Journal of Thermal Science and Technology, 2021
To yield an effective control to impede the progress of combustion oscillation and to lead to the development of completely stable combustors, it is necessary to reveal the mechanism of the destabilization.
Yuki ATAGI, Masayasu SHIMURA, Mamoru TANAHASHI   +2 more
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Large Eddy Simulation and Dynamic Mode Decomposition of Supersonic Combustion Instability in a Strut-Based Scramjet Combustor

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, Qian Chen, Xiaofei Niu, Shufeng Cai   +3 more
doaj   +1 more source

Robust Gas Turbine Combustor with Acoustic Liner

Journal of Thermal Science and Technology, 2012
Combustion oscillation of a self-excited thermo-acoustic phenomenon occurs inside the gas turbine combustor. Its excessive pressure fluctuation may impair the gas turbine engine operation, and could result in hardware severe damages.
Kazufumi IKEDA, Keisuke MATSUYAMA, Masaharu NISHIMURA   +2 more
doaj   +1 more source

Estimation of combustion efficiency range and pressure fluctuation at low working condition

Energy Reports, 2022
The exact data of combustion efficiency are rare in the open literature near the ignition and at sub-idle, especially at the state close to the lean blowout limit, due to the complexity of combustion characteristics and inconvenience of measurement in ...
Yixiang Yuan, Mengmeng Zhao, Huazhang Yu, Wenzhe Li, Baoting Guo, Qinghua Zeng, Bosheng Su   +6 more
doaj   +1 more source