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 …

In a thermoacoustic system, such as a flame in a combustor, heat release oscillations couple
with acoustic pressure oscillations. If the heat release is sufficiently in phase with the …

Unwanted combustion instability occurs in many propulsion systems, such as rocket motors,
and aero-engines. It is typically caused by a coupling between acoustic waves and unsteady …

Helmholtz resonators are widely used as acoustic dampers to mitigate noise in gas turbines
and automotive exhaust systems. In order to increase the damping performance and …

The damping characteristics of three-type resonators, a half-wave, a quarter-wave, and a
Helmholtz resonator are studied experimentally by adopting linear acoustic test. A …

The aim of this paper is to provide an overview of the existing industrial practices used for
cabin noise control in various industries such as automotive, marine, aerospace, and …

To gain insight into sound absorption mechanism and to evaluate its acoustic damping
performance, two-dimensional numerical simulation of acoustically excited flow through …

Combustion instabilities are often-observed phenomena which take place in acoustically
closed spaces such as combustion chambers in propulsion systems. These phenomena …

Perforated plates/liners have been widely applied in aeroengines and gas turbines to
dissipate unwanted noise. In this work, numerical simulations and experimental study of …

The present study has proposed a numerical methodology based on harmonic analysis of
the convective Helmholtz equation to predict acoustic characteristics of combustion …