Results 11 to 20 of about 3,374 (244)

Dynamics of Thermoacoustic Oscillations in Swirl Stabilized Combustor without and with Porous Inert Media

Journal of Combustion, 2022
Lean premixed (LPM) combustion processes are of increased interest to the gas turbine industry due to their reduction in harmful emissions. These processes are susceptible to thermoacoustic instabilities, which are produced when energy added by an in ...
Cody Dowd, Joseph Meadows
doaj   +2 more sources

Influence of equivalence ratio and hydrogen addition on thermoacoustic instabilities in premixed methane and propane flames in vertical tubes

Case Studies in Thermal Engineering
This research examines the behavior of premixed flames within a vertical tube, considering both an open and a closed end configuration. The study utilizes a pilot flame as the ignition source.
Abdullah M.A. Alsharif, Robert Woolley
doaj   +2 more sources

Emerging topics in nanophononics and elastic, acoustic, and mechanical metamaterials: an overview. [PDF]

Nanophotonics, 2023
Abstract This broad review summarizes recent advances and “hot” research topics in nanophononics and elastic, acoustic, and mechanical metamaterials based on results presented by the authors at the EUROMECH 610 Colloquium held on April 25–27, 2022 in Benicássim, Spain.
Krushynska AO, Torrent D, Aragón AM, Ardito R, Bilal OR, Bonello B, Bosia F, Chen Y, Christensen J, Colombi A, Cummer SA, Djafari-Rouhani B, Fraternali F, Galich PI, Garcia PD, Groby JP, Guenneau S, Haberman MR, Hussein MI, Janbaz S, Jiménez N, Khelif A, Laude V, Mirzaali MJ, Packo P, Palermo A, Pennec Y, Picó R, López MR, Rudykh S, Serra-Garcia M, Sotomayor Torres CM, Starkey TA, Tournat V, Wright OB.   +34 more
europepmc   +2 more sources

Non-normality and nonlinearity in thermoacoustic instabilities [PDF]

International Journal of Spray and Combustion Dynamics, 2016
R I Sujith, Matthew P Juniper, Peter J Schmid   +2 more
exaly   +2 more sources

Effects of acoustic liner on thermoacoustic instabilities in a premixed swirl combustor

Aerospace Science and Technology, 2021
Liangliang Xu, Guangyu Zhang, Guoqing Wang   +2 more
exaly   +3 more sources

Averaging of thermoacoustic azimuthal instabilities [PDF]

Journal of Sound and Vibration, 2021
Journal of Sound and Vibration (2020)
Ghirardo, G., Gant, F.
openaire   +2 more sources

Instabilities of intrinsic thermoacoustic modes in a thermoacoustic waveguide with anechoic terminations

Physical Review B, 2022
15 pages, 8 ...
Haitian Hao, Fabio Semperlotti
openaire   +2 more sources

Neural ODE to model and prognose thermoacoustic instability [PDF]

Chaos: An Interdisciplinary Journal of Nonlinear Science, 2022
Thermoacoustic instability in a reacting flow field is characterized by high amplitude pressure fluctuations driven by a positive coupling between the unsteady heat release rate and the acoustic field of the combustor. In a turbulent flow, the transition of a thermoacoustic system from a state of chaos to periodic oscillations occurs via a state of ...
Jayesh M. Dhadphale, Vishnu R. Unni, Abhishek Saha, R. I. Sujith   +3 more
openaire   +4 more sources

Generation and Mitigation Mechanism Studies of Nonlinear Thermoacoustic Instability in a Modelled Swirling Combustor with a Heat Exchanger

Aerospace, 2021
In the present work, 3D Unsteady Reynolds-Averaged Navier-Stokes (URANS) simulations are performed to investigate the generation and mitigation mechanism of combustion-sustained thermoacoustic instabilities in a modelled swirl combustor.
Yuze Sun, Dan Zhao, Xiaowei Zhu
doaj   +1 more source

Experimental Investigation of Stochastically Forced Rijke-Type Supercritical Thermoacoustic Systems

Energies, 2023
Intense thermoacoustic oscillations may lead to severe deterioration due to the induced intolerable damage to combustors. A better understanding of unstable behaviors is important to prevent or suppress these oscillations.
Hao Zhang, Yuanhao Wang, Xinyan Li, Geng Chen, Yuze Sun   +4 more
doaj   +1 more source