In many continuous combustion processes, such as those found in aeroengines or gas
turbines, the flame is stabilized by a swirling flow formed by aerodynamic swirlers. The …

The unsteady response of a flame to acoustic or flow perturbations plays a crucial role in
thermoacoustic combustion instability. The majority of studies on this subject presents and …

Self-excited thermoacoustic instabilities as frequently observed in rocket motors, gas
turbines, ramjets, and aeroengine afterburners are highly detrimental and undesirable for …

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 …

This article explores the possibility of analyzing combustion instabilities in liquid rocket
engines by making use of Large Eddy Simulations (LES). Calculations are carried out for a …

Lean premixed combustion chambers are susceptible to combustion instabilities arising
from the coupling between the heat release rate perturbations and the acoustic …

Numerical simulations were used to characterise the non-linear response of a turbulent
premixed flame to acoustic velocity fluctuations. The test flame simulated was the bluff body …

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 …

Thermoacoustic instability is a flow instability that arises due to a two-way coupling between
acoustic waves and unsteady heat release rate. It can cause damaging, large-amplitude …