The implementation of advanced low-emission aircraft engine technologies and the
reduction of noise from airframe, fan, and jet exhaust have made noise contributions from an …

This article proposes a review of the state of knowledge in the field of combustion noise. The
survey comprises an initial discussion of indirect and direct noise sources and their general …

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 …

Thermoacoustic combustion instability is one of the most challenging operational issues in
several high-performance, low-emissions combustion technologies, including gas turbines …

Thermoacoustic instability, also known as combustion instability, continues to be a problem
in the development of modern gas turbine combustors and rocket engines. Such instability is …

The present paper describes a methodology to improve the accuracy of prediction of the
eigenfrequencies and growth rates of self-induced instabilities and demonstrates its …

A strong, naturally-occurring “growl” combustion instability was studied for the case of a lean
premixed prevaporized (LPP) combustor that shows great promise in reducing pollutant …

A combustion instability in a combustor terminated by a nozzle is analysed and modelled
based on a low-order Helmholtz solver. A large eddy simulation (LES) of the corresponding …

Interference mechanisms of acoustic/convective disturbances were experimentally
investigated in a swirl-stabilized lean-premixed gas turbine combustor operated with natural …

OVER the last five decades, jet and external aerodynamic noises of aircraft have been
substantially reduced. Further developments will be needed for modern aircraft design in …