Experimental investigation of the combustion instability behaviors and NOx emissions in an ammonia/methane fueled low eddy premixed burner

M Ilbas, O Kumuk, B Alabas - Journal of the Energy Institute, 2023 - Elsevier
In this study, experimental analyzes were carried out to examine the combustion instability
properties of methane-ammonia mixed fuels for a low eddy and premix burner. The aim of …

Numerical investigation of wall effects on combustion noise from a lean-premixed hydrogen/air low-swirl flame

J Nagao, AL Pillai, T Shoji, S Tachibana, T Yokomori… - Physics of …, 2023 - pubs.aip.org
A hybrid computational fluid dynamics (CFD)/computational aero-acoustics (CAA) approach,
in which large-eddy simulation (LES) and APE-RF (solution of the acoustic perturbation …

Resolvent-based modelling of coherent structures in a turbulent jet flame using a passive flame approach

M Casel, K Oberleithner, F Zhang, T Zirwes… - Combustion and …, 2022 - Elsevier
Motivated by the recent success in finding coherent structures in turbulent flows and
describing their noise emission using the Resolvent Analysis (RA), the method is applied to …

Comparison of a finite volume and two Lattice Boltzmann solvers for swirled confined flows

A Aniello, D Schuster, P Werner, JF Boussuge… - Computers & …, 2022 - Elsevier
A finite volume and two Lattice–Boltzmann unsteady, flow solvers using LES (Large Eddy
Simulation) were compared in a swirling flow configuration, typical of aeronautical …

Effect of biogas addition on combustion instability of propane flame at different external acoustic enforcement frequencies

B Alabaş - Fuel, 2022 - Elsevier
In this study, the effect of biogas addition to propane flame on combustion instability and
luminous intensity was investigated. A premixed and swirl assisted burner was used in the …

Combining analytical models and LES data to determine the transfer function from swirled premixed flames

F Dupuy, M Gatti, C Mirat, L Gicquel, F Nicoud… - Combustion and …, 2020 - Elsevier
A methodology is developed where the acoustic response of a swirl stabilized flame is
obtained from a reduced set of simulations. Building upon previous analytical flame transfer …

On the spurious entropy generation encountered in hybrid linear thermoacoustic models

M Meindl, CF Silva, W Polifke - Combustion and Flame, 2021 - Elsevier
This work demonstrates that a hybrid approach for linear thermoacoustic stability analysis
that combines the Linearized Navier–Stokes Equations (LNSE) with a global Flame Transfer …

Direct assessment of the acoustic scattering matrix of a turbulent swirl combustor by combining system identification, large eddy simulation and analytical approaches

M Merk, C Silva, W Polifke… - … for gas turbines …, 2019 - asmedigitalcollection.asme.org
This study assesses and compares two alternative approaches to determine the acoustic
scattering matrix of a premixed turbulent swirl combustor:(1) The acoustic scattering matrix …

Active control of multiple neural networks for oscillating combustion

L Zhang, X Su, H Zhou, X Wang, Z Ren - AIAA Journal, 2022 - arc.aiaa.org
A multiple neural network controller is proposed and demonstrated to suppress the pressure
oscillation of the Rijke tube acoustic network. This controller consists of three modules …

Linear and nonlinear flame response prediction of turbulent flames using neural network models

N Tathawadekar, A Ösün, AJ Eder… - … Journal of Spray …, 2024 - journals.sagepub.com
Modelling the flame response of turbulent flames via data-driven approaches is challenging
due, among others, to the presence of combustion noise. Neural network methods have …