Combustion noise comprises two components: direct combustion noise and indirect
combustion noise. The latter is the lesser studied, with entropy noise believed to be its main …

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 …

Accurate prediction of limit cycle oscillations resulting from combustion instability has been a
long-standing challenge. The present work uses a coupled approach to predict the limit …

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 …

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 …

Progress in analytical methods to predict and control azimuthal combustion instability
modes in annular chambers | Physics of Fluids | AIP Publishing Skip to Main Content …

Many aero-engine and gas turbine combustion systems are in choked configuration. These
combustors are more prone to thermoacoustic instability. Thus there is a need to …

Most annular combustors feature a discrete rotational symmetry so that the full configuration
can be obtained by copying one burner-flame segment a certain number of times around the …

Thermoacoustic instability occurs in many practical combustion systems. These systems are
non-normal and associated with transient growth of acoustic disturbances. If the transient …

This work demonstrates that a hybrid approach for linear thermoacoustic stability analysis
that combines the Linearized Navier–Stokes Equations (LNSE) with a global Flame Transfer …