Many complex systems undergo critical transitions. A thermoacoustic system is one such
system which exhibits a catastrophic transition to a state of oscillatory instability known as …

Thermoacoustic instability in turbulent combustors is a nonlinear phenomenon resulting
from the interaction between acoustics, hydrodynamics, and the unsteady flame. Over the …

Reacting flow fields are often subject to unsteadiness due to flow, reaction, diffusion, and
acoustics. Further, flames can also exhibit inherent unsteadiness caused by various intrinsic …

In this paper, we present the numerical evidence of multiple bifurcations in thermoacoustic
instability as we decrease the equivalence ratio (ϕ) from fuel-rich (ϕ= 1.5) to fuel-lean (ϕ …

This paper presents the first numerical evidence of an intermittency route to period-2
thermoacoustic instability in a subcritical singleelement liquid rocket engine burning …

Rocket engine combustors are prone to transverse instabilities that are characterized by
large amplitude high frequency oscillations in the acoustic pressure and the heat release …

We present a data-driven method for the early detection of thermoacoustic instabilities.
Recurrence quantification analysis is used to calculate characteristic combustion features …

We study the formation mechanism of high-frequency combustion oscillations in a model
rocket combustor from the viewpoints of symbolic dynamics and complex networks. The flow …

The phenomena of combustion instabilities beyond limit cycles caused by the nonlinear
interaction of various instability modes have recently received much attention. This paper …

A methane/oxygen mixture is considered to be an appropriate propellant for many future
rocket engines due to its practicality and low cost. To better understand the combustion …