Results 61 to 70 of about 494,605 (210)
International Journal for Numerical Methods in Engineering, Volume 127, Issue 1, 15 January 2026.ABSTRACT The multiresolution finite wavelet domain method has been meticulously studied in numerous wave propagation simulations, showing excellent convergence properties and very fast computing times. The multiresolution procedure always starts with the coarse solution, and then finer solutions can be superimposed on the coarse solution until ...
Dimitris Dimitriou +2 more
wiley +1 more source
Acoustic and Large Eddy Simulation studies of azimuthal modes in annular combustion chambers [PDF]
, 2012 The objectives of this paper are the description of azimuthal instability modes found in annular combus- tion chambers using two numerical tools: (1) Large Eddy Simulation (LES) methods and (2) acoustic solv- ers.
Wolf, Pierre +4 more
core +1 more source
Applications in Energy and Combustion ScienceSimultaneous multi-parameter experimental data characterizing the flow-combustion interaction process are of great significance for understanding the flame instability mechanism in combustion systems.
Zhen Cao +6 more
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Study of burner geometry effects on non-premixed flame response under acoustic excitation
Journal of Low Frequency Noise, Vibration and Active Control, 2019 The study of the flame under the acoustic excitation contributes to the study of flame self-excited thermoacoustic instability. Although non-premixed combustion is widely used in industry, research on its combustion instability characteristics is ...
Hao Zhou +3 more
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An Experimental PIV/POD Study on the Sequentially Coupled Flow Field of Swirl and Multiple Jets
International Journal of Aerospace Engineering, Volume 2026, Issue 1, 2026.The stepwise flow reconstruction induced by sequential coupling of swirl, primary jets, and dilution jets was experimentally investigated in a model combustor using high‐speed PIV and proper orthogonal decomposition (POD). Three nonreacting configurations were compared: pure swirl, swirl plus primary jets, and swirl with both primary and dilution jets.
Qingqing Dong, Jian Chen, Kan Xie
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Aerospace, 2022 In order to study the influence of streamwise forcing on the formation mechanism of liquid ligaments and droplets in the primary breakup process of liquid circular jet, the VOF interface capturing method-based direct numerical simulation was adopted, and
Chenglin Zhou, Jianfeng Zou, Yang Zhang
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3D convolutional selective autoencoder for instability detection in combustion systems
Energy and AI, 2021 While analytical solutions of critical (phase) transitions in dynamical systems are abundant for simple nonlinear systems, such analysis remains intractable for real-life dynamical systems. A key example is thermoacoustic instability in combustion, where
Tryambak Gangopadhyay +6 more
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Detached Eddy Simulation (DES) of a Turbulent Premixed Flame Stabilized on a Bluff Body
Proceedings in Applied Mathematics and Mechanics, Volume 25, Issue 2, June 2025.ABSTRACT As the demand for net‐zero emissions intensifies, low‐emission fuels (LEFs) are increasingly explored for their potential to reduce pollutants in combustion systems. The present study investigates the flame dynamics and pollutant emissions (CO and NOx) of different LEFs using detached eddy simulations (DES), a method that offers better ...
Abdelkader Hemaizia +2 more
wiley +1 more source
The effect of the flame phase on thermoacoustic instabilities [PDF]
Combustion and Flame, 2018 This theoretical paper concerns the influence of the phase of the heat release response on thermoacoustic systems. We focus on one pair of degenerate azimuthal acoustic modes, with frequency ω0. The same results apply for an axial acoustic mode. We show how the value φ0 and the slope −τ of the flame phase at the frequency ω0 affects the boundary of ...
Giulio Ghirardo +2 more
openaire +1 more source
Continuous and explosive synchronization transition in turbulent combustors
AIP AdvancesThermoacoustic instabilities in turbulent combustors have disastrous consequences and present notorious challenges in their modeling, prediction, and control.
Samarjeet Singh +4 more
doaj +1 more source