Suppression of thermo-acoustic instabilities in horizontal Rijke tube using pulsating radial jets
MethodsX, 2023 Thermo-acoustic instability has been observed in gas turbines, rocket engines, and aero-engines. Acoustic perturbations grow and change the characteristics of the flow due to instability.
Nilaj N. Deshmukh +6 more
doaj +1 more source
International Journal for Numerical Methods in Fluids, Volume 94, Issue 8, Page 1082-1110, August 2022., 2022 Vorticity contours in a three‐dimensional bluff‐body combustor. Abstract The objective of this study is to develop and apply efficient solution techniques for numerical modeling of combustion with stiff chemical kinetics in practical combustors. The new technique combines a fourth‐order implicit‐explicit (IMEX) additive Runge‐Kutta scheme (ARK) with ...
Joshua Christopher +2 more
wiley +1 more source
Non-normality and nonlinearity in thermoacoustic instabilities [PDF]
, 2015 Analysis of thermoacoustic instabilities were dominated by modal (eigenvalue) analysis for many decades. Recent progress in nonmodal stability analysis allows us to study the problem from a different perspective, by quantitatively describing the short ...
Sujith, RI +5 more
core +3 more sources
Numerical investigation of the premixed V-flame stabilization and blowout [PDF]
مهندسی مکانیک شریف, 2021 Global warming and high fossil fuel consumption increase the application of the low-Nox burner with lean-premixed combustion. However, this type of combustion is more susceptible to thermoacoustic instabilities.
N. Nabatian
doaj +1 more source
Using LES to Study Reacting Flows and Instabilities in Annular Combustion Chambers [PDF]
, 2011 Great prominence is put on the design of aeronautical gas turbines due to increasingly stringent regulations and the need to tackle rising fuel prices.
Pierre Wolf +9 more
core +1 more source
Accounting for convective effects in zero-Mach-number thermoacoustic models [PDF]
, 2014 This paper presents a methodology to account for some mean-flow effects on thermo-acoustic instabilities when using the zero-Mach-number assumption. It is shown that when a computational domain is represented under the M=0 assumption, a nonzero-Mach ...
Nicoud, F. +5 more
core +1 more source
Suppression of Thermoacoustic Instabilities Using An Electric Field and Feedback Control
, 2022 In this work, a mechanism is developed for an electric field to modulate the heat-release of a laminar flame. This mechanism is then used with a feedback controller to suppress thermoacoustic instabilities in a Rijke tube.
Dustin L Cruise (13130481)
core +1 more source
Heat transfer processes in parallel-plate heat exchangers of thermoacoustic devices - Numerical and experimental approaches [PDF]
, 2012 This paper addresses the issues of heat transfer in oscillatory flow conditions, which are typically found in thermoacoustic devices. The analysis presented concerns processes taking place in the individual "channels" of the parallel-plate heat ...
Piccolo, A +4 more
core +1 more source
Early detection of thermoacoustic instabilities in a cryogenic rocket thrust chamber using combustion noise features and machine learning [PDF]
, 2021 We present a data-driven method for the early detection of thermoacoustic instabilities. Recurrence quantification analysis is used to calculate characteristic combustion features from short-length time series of dynamic pressure sensor data.
Martin, J +21 more
core +1 more source
Effects of liquid fuel/wall interaction on thermoacoustic instabilities in swirling spray flames
, 2020 Euler-Lagrange Large Eddy Simulations of the effect of spray/wall interactions on thermoacoustic instabilities in swirling spray ...
Lo Schiavo Ermanno +4 more
core +1 more source