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 …

Rijke tube: A nonlinear oscillator

K Manoj, SA Pawar, J Kurths, RI Sujith - Chaos: An Interdisciplinary …, 2022 - pubs.aip.org
Dynamical systems theory has emerged as an interdisciplinary area of research to
characterize the complex dynamical transitions in real-world systems. Various nonlinear …

Flame interactions in a stratified swirl burner: Flame stabilization, combustion instabilities and beating oscillations

X Han, D Laera, D Yang, C Zhang, J Wang, X Hui… - Combustion and …, 2020 - Elsevier
The present article investigates the interactions between the pilot and main flames in a novel
stratified swirl burner using both experimental and numerical methods. Experiments are …

Combustion dynamics of multi-element lean-premixed hydrogen-air flame ensemble

H Kang, KT Kim - Combustion and Flame, 2021 - Elsevier
The crux of the technical issues facing the development of hydrogen gas turbine engines is
the problem of how to enable low NOx, low dynamics combustor operations without …

Experimental investigation of combustion dynamics and NOx/CO emissions from densely distributed lean-premixed multinozzle CH4/C3H8/H2/air flames

U Jin, KT Kim - Combustion and Flame, 2021 - Elsevier
Lean-premixed fuel-flexible combustion technology capable of operating on a wide range of
fuels, including high or pure hydrogen, is expected to play a crucial role in reducing nitrogen …

Gas turbine monitoring using neural network dynamic nonlinear autoregressive with external exogenous input modelling

MB Rahmoune, A Hafaifa, A Kouzou, XQ Chen… - … and Computers in …, 2021 - Elsevier
The main purpose of the present work is to propose an effective tool which allows to ensure
the protection and the safety measures against the instability phenomena in a gas turbine …

High-frequency transverse combustion instabilities of lean-premixed multislit hydrogen-air flames

T Lee, KT Kim - Combustion and flame, 2022 - Elsevier
The present experimental investigation is concerned with combustion dynamics of lean-
premixed multislit hydrogen-air flames, with the aim of addressing some of the central …

Modal dynamics of self-excited thermoacoustic instabilities in even and odd numbered networks of lean-premixed combustors

K Moon, D Bae, KT Kim - Combustion and Flame, 2023 - Elsevier
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 …

Combustion dynamics of lean fully-premixed hydrogen-air flames in a mesoscale multinozzle array

T Lee, KT Kim - Combustion and Flame, 2020 - Elsevier
In the near future, lean-premixed hydrogen combustion technology for low-emission gas
turbine engines is expected to be crucial in the effort to mitigate greenhouse gas emissions …

Mutual synchronization of two lean-premixed gas turbine combustors: Phase locking and amplitude death

H Jegal, K Moon, J Gu, LKB Li, KT Kim - Combustion and Flame, 2019 - Elsevier
In a can-annular gas turbine combustion system, low-frequency self-excited combustion
instabilities can arise from coupled interactions between adjacent can combustors, rather …