Results 21 to 30 of about 494,605 (210)
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 +3 more
openaire +5 more sources
Numerical simulation of thermoacoustic instability in Rijke tube
Xibei Gongye Daxue Xuebao, 2021 The influence of three different states on the thermoacoustic instability characteristics of Rijke tube was compared in order to reseach the influencing factors of thermoacoustic oscillation by using the Rijke tube model with stack as the heat source ...
doaj +1 more source
Numerical Study on the Route of Flame-Induced Thermoacoustic Instability in a Rijke Burner
Applied Sciences, 2021 The self-excited thermoacoustic instability in a two-dimensional Rijke-type burner with a center-stabilized premixed methane–air flame is numerically studied.
Nannan Dang +2 more
doaj +1 more source
Journal of Aerospace Technology and Management, 2019 Thermoacoustic instability in liquid rocket engines can have potentially catastrophic consequences. Active control based on feedback promises improved stability margin over a wider range of operating conditions than passive control.
Varghese M Thannickal +2 more
doaj +3 more sources
Energies, 2023 Hydrogen can play a key role in the gradual transition towards a full decarbonization of the combustion sector, e.g., in power generation. Despite the advantages related to the use of this carbon-free fuel, there are still several challenging technical ...
Vito Ceglie +4 more
doaj +1 more source
Monitoring Preferential Flow of Water in Sand Using Thermoacoustics Wave Imaging
Geophysical Research Letters, Volume 50, Issue 21, 16 November 2023., 2023 Abstract Accurate predictions of fluid flow, mass transport, and reaction rates critically impact the efficiency and reliability of subsurface exploration and sustainable use of subsurface resources. Quantitative dynamical sensing and imaging can play a pivotal role in the ability to make such predictions.
Chang Liu +6 more
wiley +1 more source
Metamaterial‐Augmented Head‐Mounted Audio Module
Advanced Materials Technologies, Volume 8, Issue 19, October 10, 2023., 2023 A metamaterial‐transducer resonant coupling is proposed inside a head‐mounted audio module to achieve a 3–7 dB broadband sound pressure level improvement within 50–700 Hz, which is the most challenging frequency range for radiation enhancement. The acoustic metamaterial not only enhances voltage sensitivity near the intrinsic metamaterial resonance ...
Jun Ji +5 more
wiley +1 more source
Thermoacoustic Instabilities in the Rijke Tube: Experiments and Modeling [PDF]
, 2003 Thermoacoustic instability can appear in thermal devices when unsteady heat release is coupled with pressure perturbations. This effect results in excitation of eigen acoustic modes of the system.
Konstantin Matveev +1 more
core +1 more source
Experimental Investigation on Self-Excited Thermoacoustic Instability in a Rijke Tube
Applied Sciences, 2022 The experimental investigations into the thermoacoustic instability in a Rijke tube are presented. In order to capture the dynamics of the temperature, a single-ended tunable diode laser absorption spectroscopy (TDLAS) technique was developed, with a ...
Liezhao Luo +5 more
doaj +1 more source
Experiments and identification of thermoacoustic instabilities with the Rijke tube [PDF]
2020 IEEE Conference on Control Technology and Applications (CCTA), 2020 ISBN:978-1-7281-7141 ...
Andrea Iannelli +3 more
openaire +3 more sources