The optimized design of bias flow liner is a key element for the development of low emission
combustion systems in modern gas turbines and aero-engines. The research of bias flow …

A coupled numerical approach is investigated for predicting combustion instability limit cycle
characteristics when the combustor contains a long flame. The test case is the ORACLES …

Direct numerical simulations are used to study the interaction of a cavity-backed circular
orifice with grazing laminar and turbulent boundary layers and incident sound waves. The …

Aeroacoustics damping performance of an in-duct perforated orifice with a bias flow in terms
of acoustic power absorption Δ and reflection χ coefficients are evaluated in this work. For …

Acoustic dampers are efficient and cost-effective means for suppressing thermoacoustic
instabilities in combustion chambers. However, their design and the choice of their purging …

The acoustic response of a circular hole with mean flow passing through it is highly relevant
to Helmholtz resonators, fuel injectors, perforated plates, screens, liners and many other …

亥姆霍兹共振器(HR) 作为典型的被动消声装置, 常被安装于航空发动机和燃气轮机的燃烧室上
用以吸收噪声进而抑制燃烧热声振荡. 在实际应用中, 为防止燃烧室内高温气体损坏HR …

Helmholtz resonators (HRs) are widely used to damp acoustic oscillations, including in the
combustors of aero-engines and power gas turbines where they damp thermoacoustic …

Lean premixed combustion allows NOx emissions to be minimised while keeping other
pollutants, eg, CO, at low levels in industrial gas turbines or aero-engines [1]. Unfortunately …

Thermoacoustic instabilities prevent the implementation of modern combustion concepts in
gas turbines, which are essential for higher efficiency and lower emissions. Bias flow liners …