Coupled interaction between acoustics and unsteady flame dynamics during the transition to thermoacoustic instability in a multi-element rocket combustor
Sign Up to like & getrecommendations! Published in 2022 at "Combustion and Flame"
DOI: 10.1016/j.combustflame.2022.112047
Abstract: Rocket engine combustors are prone to transverse instabilities that are characterized by large amplitude high frequency oscillations in the acoustic pressure and the heat release rate. In this work, we study the coupled interaction between… read more here.
Keywords: thermoacoustic instability; acoustics; rocket; combustor ... See more keywords
Thermoacoustic instability as mutual synchronization between the acoustic field of the confinement and turbulent reactive flow
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Fluid Mechanics"
DOI: 10.1017/jfm.2017.438
Abstract: Thermoacoustic instability is the result of a positive coupling between the acoustic field in the duct and the heat release rate fluctuations from the flame. Recently, in several turbulent combustors, it has been observed that… read more here.
Keywords: release rate; mutual synchronization; heat release; acoustic field ... See more keywords
On the emergence of critical regions at the onset of thermoacoustic instability in a turbulent combustor.
Sign Up to like & getrecommendations! Published in 2018 at "Chaos"
DOI: 10.1063/1.5028159
Abstract: We use complex network theory to investigate the dynamical transition from stable operation to thermoacoustic instability via intermittency in a turbulent combustor with a bluff body stabilized flame. A spatial network is constructed, representing each… read more here.
Keywords: turbulent combustor; critical regions; thermoacoustic instability; bluff body ... See more keywords
Recurrence network analysis exploring the routes to thermoacoustic instability in a Rijke tube with inverse diffusion flame.
Sign Up to like & getrecommendations! Published in 2021 at "Chaos"
DOI: 10.1063/5.0026943
Abstract: Inverse diffusion flame (IDF) is a reliable low NOx technology that is suitable for various industrial applications including gas turbines. However, a confined IDF may exhibit thermoacoustic instability, a kind of dynamic instability, which is… read more here.
Keywords: inverse diffusion; recurrence network; thermoacoustic instability; instability ... See more keywords
Data-driven Detection and Early Prediction of Thermoacoustic Instability in a Multi-nozzle Combustor
Sign Up to like & getrecommendations! Published in 2020 at "Combustion Science and Technology"
DOI: 10.1080/00102202.2020.1820495
Abstract: Thermoacoustic instability (TAI) is a critical issue in modern lean-burn gas-turbine combustors, which is induced by a strong coupling between the resonant combustor acoustics and fluctuations in t... read more here.
Keywords: driven detection; data driven; combustor; detection early ... See more keywords
Onset Behavior of Thermoacoustic Instability in an Air-Filled Closed Tube
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the Physical Society of Japan"
DOI: 10.7566/jpsj.90.014401
Abstract: Experiments are performed to reinvestigate experimentally onset behavior of thermoacoustic instability in an air-filled closed tube with a stack subjected to a temperature gradient. As reported pre... read more here.
Keywords: onset behavior; filled closed; instability air; air filled ... See more keywords