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 …

[HTML][HTML] Enhancing ammonia combustion with minimum hydrogen blended in presence of self-excited intermittent pulsating oscillations

Y Guan, D Zhao - Physics of Fluids, 2023 - pubs.aip.org
In this work, we propose and test a partial premixed fuel injection design of NH 3− H 2− O 2
with double ring-shaped inlets to enhance ammonia combustion in an open-ended …

Advances in the utilization and suppression of thermoacoustic effect: A review

J Wen, L Zhang, H Kang, S Liu, K Wang - International Journal of Heat and …, 2024 - Elsevier
The thermoacoustic effect is a complicated occurrence that involves the mutual conversion
of sound and thermal energy. Thermoacoustic heat engines built on this effect have …

[HTML][HTML] Thermoacoustic stabilization of a sequential combustor with ultra-low-power nanosecond repetitively pulsed discharges

B Dharmaputra, S Shcherbanev, B Schuermans… - Combustion and …, 2023 - Elsevier
This study demonstrates the stabilization of a sequential combustor with Nanosecond
Repetitively Pulsed Discharges (NRPD). Sequential combustors offer advantages such as …

Experimental and theoretical investigation on the thermoacoustic-induced vibration in a centrally-staged combustor

Z Qin, Y Lin, M Han, X Han, X Zhang, P He, X Gao… - Combustion and …, 2025 - Elsevier
Thermoacoustic-induced vibration is a practical issue for the safe combustion operation. In
this study, we conducted experiments in a centrally-staged combustor for the realistic swirl …

Nonlinear acoustics of an aperture under grazing flow

AK Stoychev, T Pedergnana… - Proceedings of the …, 2024 - royalsocietypublishing.org
This work presents a mathematical model of a dynamically forced, acoustically compact
aperture subject to one-sided mean grazing flow in two or three dimensions. By contrast to …

[HTML][HTML] Tunable passive control of thermoacoustic instabilities based on a variable geometry combustor outlet nozzle

A Blondé, B Schuermans, B Dharmaputra… - Aerospace Science and …, 2025 - Elsevier
This paper presents a tunable combustor outlet geometry, which enables control of
thermoacoustic instabilities. It is based on a water-cooled conical piston inserted in the outlet …

Synchronous suppression of combustion instabilities and NOx emissions with O2/N2/CO2 ternary gases jetting into the unsteady lean-premixed flame

C Tao, Y Wang, H Zhou - Fuel, 2025 - Elsevier
This study experimentally explored the suppression effects of O 2/N 2/CO 2 ternary micro-
jets on combustion instabilities and NO x emissions in a lean-premixed model gas turbine …

[HTML][HTML] Plasma assisted thermoacoustic stabilization of a transiently operated sequential combustor at high pressure

B Dharmaputra, S Shcherbanev, N Noiray - Proceedings of the …, 2024 - Elsevier
This study demonstrates the stabilization of a thermoacoustic instability in a sequential
combustor at elevated pressure conditions using Nanosecond Repetitively Pulsed …

[HTML][HTML] BOATS: Bayesian optimization for active control of thermoacoustics

B Dharmaputra, P Reckinger, B Schuermans… - Journal of Sound and …, 2024 - Elsevier
This investigation presents novel adaptive control algorithms specifically designed to
address and mitigate thermoacoustic instabilities. Gas turbines are limited in their …