Results 11 to 20 of about 2,170 (163)

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
doaj   +1 more source

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
doaj   +1 more source

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

On the oscillation of combustion of a laminar spray [PDF]

Combustion and Flame, 1995
A spray combustor, with flow velocities in the laminar range, exhibits a unique operating mode where large amplitude, self-induced oscillations of the flame shape occur. The phenomenon, not previously encountered, only occurs when fuel is supplied in the form of fine liquid droplets and does not occur when fuel is supplied in gaseous form. Several flow
Yeshayahou Levy, Daniel L. Bulzan
openaire   +2 more sources

Linear Instability Analysis Method with Three-Dimensional Finite Element Model of Lean Premixed Combustor

Journal of Thermal Science and Technology, 2012
Combustion oscillation of a self-excited combustion-acoustic phenomenon occurs inside the gas turbine combustor. In general, excessive pressure fluctuation of combustion oscillation may impair the gas turbine engine operation and may result in hardware ...
Kazufumi IKEDA, Keisuke MATSUYAMA, Mitsunori ISONO, Masaharu NISHIMURA   +3 more
doaj   +1 more source

Statistical Analysis of Flame Oscillation Characterization of Oxy-Fuel in Heavy Oil Boiler Using OH Planar Laser-Induced Fluorescence

Journal of Spectroscopy, 2019
The present work investigated the flame structures and oscillations of oxy-fuel combustions in a heavy oil boiler using OH planar laser-induced fluorescence imaging.
Xin Yu, Zhen Cao, JiangBo Peng, Yang Yu, Guang Chang, Yufei Ma, XiaoHui Li, Chaobo Yang, ZhiQiang Wang   +8 more
doaj   +1 more source