A review of acoustic dampers applied to combustion chambers in aerospace industry
D Zhao, XY Li - Progress in Aerospace Sciences, 2015 - Elsevier
In engine combustion systems such as rockets, aero-engines and gas turbines, pressure
fluctuations are always present, even during normal operation. One of design prerequisites …
fluctuations are always present, even during normal operation. One of design prerequisites …
Large-eddy simulations of self-excited thermoacoustic instability in a premixed swirling combustor with an outlet nozzle
Y Sun, D Zhao, C Ji, T Zhu, Z Rao, B Wang - Physics of Fluids, 2022 - pubs.aip.org
Reducing the footprint of greenhouse gases and nitrogen oxides (NOx) emissions from
combustion systems means that they have been operating under lean or ultra-lean fuel–air …
combustion systems means that they have been operating under lean or ultra-lean fuel–air …
Prediction and control of combustion instabilities in real engines
T Poinsot - Proceedings of the Combustion Institute, 2017 - Elsevier
This paper presents recent progress in the field of thermoacoustic combustion instabilities in
propulsion engines such as rockets or gas turbines. Combustion instabilities have been …
propulsion engines such as rockets or gas turbines. Combustion instabilities have been …
Mitigating self-excited flame pulsating and thermoacoustic oscillations using perforated liners
D Zhao, E Gutmark, A Reinecke - Science Bulletin, 2019 - Elsevier
Open-loop control of self-excited flame pulsating oscillations and thermo-acoustic instability
is considered in this work. The performance of the control strategy is numerically evaluated …
is considered in this work. The performance of the control strategy is numerically evaluated …
Advances in the utilization and suppression of thermoacoustic effect: A review
J Wen, L Zhang, H Kang, S Liu, K Wang - International Journal of Heat and …, 2024 - Elsevier
The thermoacoustic effect is a complicated occurrence that involves the mutual conversion
of sound and thermal energy. Thermoacoustic heat engines built on this effect have …
of sound and thermal energy. Thermoacoustic heat engines built on this effect have …
Acoustic decoupling of longitudinal modes in generic combustion systems
Conditions are examined under which acoustic modes of a chamber filled with hot
combustion products can be considered to be decoupled from the plenum acoustics …
combustion products can be considered to be decoupled from the plenum acoustics …
Prediction of combustion noise of an enclosed flame by simultaneous identification of noise source and flame dynamics
Abstract Large-Eddy Simulation (LES) is combined with advanced System Identification (SI)
to simultaneously infer models for the source of combustion noise and the dynamic …
to simultaneously infer models for the source of combustion noise and the dynamic …
Modeling the damping properties of perforated screens traversed by a bias flow and backed by a cavity at low Strouhal number
Acoustic absorption properties of perforated screens traversed by a bias flow and backed by
a resonant cavity are examined at a new absorption regime. The reflection coefficient of …
a resonant cavity are examined at a new absorption regime. The reflection coefficient of …
Investigating the effect of local addition of hydrogen to acoustically excited ethylene and methane flames
T Hussain, M Talibi, R Balachandran - International Journal of Hydrogen …, 2019 - Elsevier
While lean combustion in gas turbines is known to reduce NOx, it makes combustors more
prone to thermo-acoustic instabilities, which can lead to deterioration in engine …
prone to thermo-acoustic instabilities, which can lead to deterioration in engine …
Experimental study of the effect of outlet boundary on combustion instabilities in premixed swirling flames
Combustion instability is one significant issue in the development of aero-engines and gas
turbines. In practical combustors, the exit boundary of the combustion chamber is complex …
turbines. In practical combustors, the exit boundary of the combustion chamber is complex …