Understanding the role of flow dynamics in thermoacoustic combustion instability
J O'Connor - Proceedings of the Combustion Institute, 2023 - Elsevier
Thermoacoustic combustion instability is one of the most challenging operational issues in
several high-performance, low-emissions combustion technologies, including gas turbines …
several high-performance, low-emissions combustion technologies, including gas turbines …
Rijke tube: A nonlinear oscillator
Dynamical systems theory has emerged as an interdisciplinary area of research to
characterize the complex dynamical transitions in real-world systems. Various nonlinear …
characterize the complex dynamical transitions in real-world systems. Various nonlinear …
Analysis of unsteady mixed convection of Cu–water nanofluid in an oscillatory, lid-driven enclosure using lattice Boltzmann method
M Valizadeh Ardalan, R Alizadeh, A Fattahi… - Journal of Thermal …, 2021 - Springer
The unsteady physics of laminar mixed convection in a lid-driven enclosure filled with Cu–
water nanofluid is numerically investigated. The top wall moves with constant velocity or with …
water nanofluid is numerically investigated. The top wall moves with constant velocity or with …
Nonlinear self-excited thermoacoustic oscillations of a ducted premixed flame: bifurcations and routes to chaos
K Kashinath, IC Waugh, MP Juniper - Journal of Fluid Mechanics, 2014 - cambridge.org
Thermoacoustic systems can oscillate self-excitedly, and often non-periodically, owing to
coupling between unsteady heat release and acoustic waves. We study a slot-stabilized two …
coupling between unsteady heat release and acoustic waves. We study a slot-stabilized two …
Intermittency route to self-excited chaotic thermoacoustic oscillations
In nonlinear dynamics, there are three classic routes to chaos, namely the period-doubling
route, the Ruelle–Takens–Newhouse route and the intermittency route. The first two routes …
route, the Ruelle–Takens–Newhouse route and the intermittency route. The first two routes …
Learning thermoacoustic interactions in combustors using a physics-informed neural network
Many gas turbine and rocket engines exhibit unwanted combustion instability at the
experimental testing phase. Instability leads to large amplitude pressure oscillations and …
experimental testing phase. Instability leads to large amplitude pressure oscillations and …
Open-loop control of periodic thermoacoustic oscillations: experiments and low-order modelling in a synchronization framework
Open-loop forcing is known to be an effective strategy for controlling self-excited
thermoacoustic oscillations, but the details of this synchronization process have yet to be …
thermoacoustic oscillations, but the details of this synchronization process have yet to be …
[HTML][HTML] Nonlinear dynamics of a self-excited thermoacoustic system subjected to acoustic forcing
We experimentally study the nonlinear dynamics of a self-excited thermoacoustic system
subjected to acoustic forcing. Our aim is to relate these dynamics to the behavior of universal …
subjected to acoustic forcing. Our aim is to relate these dynamics to the behavior of universal …
Control of self-excited thermoacoustic oscillations using transient forcing, hysteresis and mode switching
In many combustion devices, strong self-excited flow oscillations can arise from feedback
between unsteady heat release and acoustics, resulting in increased vibration and pollutant …
between unsteady heat release and acoustics, resulting in increased vibration and pollutant …
Strange nonchaotic and chaotic attractors in a self-excited thermoacoustic oscillator subjected to external periodic forcing
We experimentally investigate the synchronization dynamics of a self-excited
thermoacoustic system forced beyond its phase-locked state. The system consists of a …
thermoacoustic system forced beyond its phase-locked state. The system consists of a …