Zobrazeno 1 - 10
of 249
pro vyhledávání: '"R. I. Sujith"'
Autor:
Gaurav Chopra, Vishnu R. Unni, Praveenkumar Venkatesan, Sara M. Vallejo-Bernal, Norbert Marwan, Jürgen Kurths, R. I. Sujith
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)
Abstract The Intertropical Convergence Zone (ITCZ) is a narrow tropical belt of deep convective clouds, intense precipitation, and monsoon circulations encircling the Earth. Complex interactions between the ITCZ and local geophysical dynamics result
Externí odkaz:
https://doaj.org/article/6035d618503048a5bdd56c88ee22fd07
Publikováno v:
AIP Advances, Vol 14, Iss 6, Pp 065106-065106-21 (2024)
Thermoacoustic instabilities in turbulent combustors have disastrous consequences and present notorious challenges in their modeling, prediction, and control. Such instabilities are characterized by self-excited periodic oscillations, arising from a
Externí odkaz:
https://doaj.org/article/c0eb376b38394a958a3dc32037b37744
Autor:
Nitin Babu George, Manikandan Raghunathan, Vishnu R Unni, R. I. Sujith, Jürgen Kurths, Elena Surovyatkina
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)
Abstract The burning of fossil fuels to generate power produces harmful emissions. Lowering such emissions in gas turbine engines is possible by operating them at fuel-lean conditions. However, such strategies often fail because, under fuel-lean cond
Externí odkaz:
https://doaj.org/article/87f7bc0796564d5ca33c540256d004b2
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-7 (2018)
Abstract Nonlinear phenomena emerging from the coupled behaviour of a pair of oscillators have attracted considerable research attention over the years, of which, amplitude death (AD) and phase-flip bifurcation (PFB) are two noteworthy examples. Alth
Externí odkaz:
https://doaj.org/article/c039ffc8e55f42349139594054ee7825
Autor:
J. Tony, S Subarna, K. S. Syamkumar, G. Sudha, S. Akshay, E. A. Gopalakrishnan, E. Surovyatkina, R. I. Sujith
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
Abstract Many systems found in nature are susceptible to tipping, where they can shift from one stable dynamical state to another. This shift in dynamics can be unfavorable in systems found in various fields ranging from ecology to finance. Hence, it
Externí odkaz:
https://doaj.org/article/93906d1f575d4e738e08486541a92fb3
Publikováno v:
AIP Advances, Vol 9, Iss 1, Pp 015119-015119-9 (2019)
We investigate the coupled behaviour of two oscillatory flames produced by separate bundles of candles, referred to as candle-flame oscillators, as the distance between them is varied. Each bundle consists of four candles whose individual flames are
Externí odkaz:
https://doaj.org/article/c6a460a4286e48b88e0c7a261cb09895
Autor:
Manikandan Raghunathan, Nitin Babu George, Vishnu R. Unni, Jürgen Kurths, Elena Surovyatkina, R. I. Sujith
Publikováno v:
International Journal of Spray and Combustion Dynamics. 15:3-15
This experimental study investigates the dynamical transition from stable operation to thermoacoustic instability in a turbulent bluff-body stabilised dump combustor. We conduct experiments to acquire acoustic pressure and local heat release rate flu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97f8dfae0ed5c5980e48a9474ef81992
https://doi.org/10.1177/17568277221149507
https://doi.org/10.1177/17568277221149507
Publikováno v:
Nonlinear Dynamics. 110:2247-2261
The presence of undesirable large-amplitude self-sustained oscillations in combustors resulting from thermoacoustic instability can lead to performance loss and structural damage to components of gas turbine and rocket engines. Traditional feedback c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66b16ac7442ea3ca3e3d44553e00f62e
https://doi.org/10.1007/s11071-022-07750-7
https://doi.org/10.1007/s11071-022-07750-7
Publikováno v:
Nonlinear Dynamics.
We present a phenomenological reduced-order model to capture the transition to thermoacoustic instability in turbulent combustors. Based on the synchronization framework, the model considers the acoustic field and the unsteady heat release rate from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71271aabb44dadc063371428d3aa8524
https://doi.org/10.1007/s11071-023-08368-z
https://doi.org/10.1007/s11071-023-08368-z
Detailed Measurement of Oxidizer-Rich Staged Combustion Injector Dynamics in Model Rocket Combustors
Autor:
Rohan Gejji, Michael J. Bedard, Praveen Kasthuri, R. I. Sujith, William E. Anderson, Benjamin L. Austin
Publikováno v:
AIAA Journal. 60:1211-1226
This paper presents experimental results from a model rocket combustor that uses a gas-centered swirl-coaxial injector element injecting warm oxygen and ambient temperature RP-2 fuel with 900 psia ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::df7bb6639f442bbff2c83d35162a3c17
https://doi.org/10.2514/1.j060492
https://doi.org/10.2514/1.j060492