Thermoacoustic Instability in Combustors
AS Morgans, D Yang - Annual Review of Fluid Mechanics, 2024 - annualreviews.org
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 …
acoustic waves and unsteady heat release rate. It can cause damaging, large-amplitude …
Characterizing modal exponential growth behaviors of self-excited transverse and longitudinal thermoacoustic instabilities
D Zhao, Y Guan - Physics of Fluids, 2022 - pubs.aip.org
Self-excited thermoacoustic instabilities as frequently observed in rocket motors, gas
turbines, ramjets, and aeroengine afterburners are highly detrimental and undesirable for …
turbines, ramjets, and aeroengine afterburners are highly detrimental and undesirable for …
Exploration of combustion instability triggering using large eddy simulation of a multiple injector liquid rocket engine
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 …
engines by making use of Large Eddy Simulations (LES). Calculations are carried out for a …
Nonlinear interaction between a precessing vortex core and acoustic oscillations in a turbulent swirling flame
The interaction of a helical mode with acoustic oscillations is studied experimentally in a
turbulent swirl-stabilized premixed flame. In addition to a precessing vortex core (PVC), the …
turbulent swirl-stabilized premixed flame. In addition to a precessing vortex core (PVC), the …
Modal dynamics of self-excited thermoacoustic instabilities in even and odd numbered networks of lean-premixed combustors
Can-to-can acoustic interactions in a circumferential network of lean-premixed combustors
have a prominent role in the development of complicated modal dynamics and large-scale …
have a prominent role in the development of complicated modal dynamics and large-scale …
A comprehensive investigation of LSTM-CNN deep learning model for fast detection of combustion instability
Z Lyu, X Jia, Y Yang, K Hu, F Zhang, G Wang - Fuel, 2021 - Elsevier
In this paper, we propose a deep learning model to detect combustion instability using high-
speed flame image sequences. The detection model combines Convolutional Neural …
speed flame image sequences. The detection model combines Convolutional Neural …
Mutual synchronization of two lean-premixed gas turbine combustors: Phase locking and amplitude death
In a can-annular gas turbine combustion system, low-frequency self-excited combustion
instabilities can arise from coupled interactions between adjacent can combustors, rather …
instabilities can arise from coupled interactions between adjacent can combustors, rather …
Swirler effects on combustion instabilities analyzed with measured FDFs, injector impedances and damping rates
The influence of the injection system on combustion instabilities is investigated on a
laboratory-scale combustor equipped with a single injector that is weakly-transparent to …
laboratory-scale combustor equipped with a single injector that is weakly-transparent to …
Cross-talk-interaction-induced combustion instabilities in a can-annular lean-premixed combustor configuration
The prediction of self-excited combustion instabilities in a can-annular gas turbine
combustion system is a significant challenge, mainly because the instabilities originate from …
combustion system is a significant challenge, mainly because the instabilities originate from …
Combustion instability feedback mechanisms in a lean-premixed swirl-stabilized combustor
KT Kim - Combustion and Flame, 2016 - Elsevier
Constructive interference between heat release rate and acoustic perturbation is
responsible for the growth of acoustic pressure amplitudes, leading to high-amplitude …
responsible for the growth of acoustic pressure amplitudes, leading to high-amplitude …