Results 11 to 20 of about 87,409 (197)
Aerospace, 2022 Thermoacoustic instabilities occur when heat release is coupled with pressure fluctuation, which may cause performance degradation of the combustor and serious structural damage.
Jiangge Deng +3 more
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Development of closed-loop active control method for suppression of thermoacoustic instability using radial air micro-jets [PDF]
MethodsX, 2023 Thermoacoustic instabilities present in the combustor of power producing devices are having adverse effects on the performance. To avoid thermoacoustic instabilities, design of control method is very much essential.
Nilaj Deshmukh +5 more
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Coupling-induced instability in a ring of thermoacoustic oscillators. [PDF]
Proc Math Phys Eng Sci, 2022 Thermoacoustic instabilities in can-annular combus-tors of stationary gas turbines lead to unstable Bloch modes which appear as rotating acoustic pressure waves along the turbine annulus. The multiscale, multiphysical nature of the full problem makes a detailed analysis challenging.
Pedergnana T, Noiray N.
europepmc +6 more sources
Experimental Study of Flame Dynamics in a Triple-Injector Swirling Nonpremixed Combustor Under Different Thermoacoustic Self-Excited Instability Modes [PDF]
SensorsCombustion instability is one of the prominent and unavoidable problems in the design of high-performance propulsion systems. This study investigates the heat release rate (HRR) responses in a triple-nozzle swirling nonpremixed combustor under various ...
Xiang Zhang, Suofang Wang, Yong Liu
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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
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Bayesian Nonparametric Modeling of Categorical Data for Information Fusion and Causal Inference [PDF]
Entropy, 2018 This paper presents a nonparametric regression model of categorical time series in the setting of conditional tensor factorization and Bayes network. The underlying algorithms are developed to provide a flexible and parsimonious representation for fusion
Sihan Xiong, Yiwei Fu, Asok Ray
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Behaviour of a premixed flame subjected to acoustic oscillations. [PDF]
PLoS ONE, 2013 In this paper, a one dimensional premixed laminar methane flame is subjected to acoustic oscillations and studied. The purpose of this analysis is to investigate the effects of acoustic perturbations on the reaction rates of different species, with a ...
Shafiq R Qureshi +2 more
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Non-normality and nonlinearity in thermoacoustic instabilities [PDF]
International Journal of Spray and Combustion Dynamics, 2016 Analysis of thermoacoustic instabilities were dominated by modal (eigenvalue) analysis for many decades. Recent progress in nonmodal stability analysis allows us to study the problem from a different perspective, by quantitatively describing the short-term behavior of disturbances.
Sujith, RI, Juniper, MP, Schmid, PJ
openaire +5 more sources
Applications in Energy and Combustion ScienceThermoacoustic instabilities pose a significant challenge in combustion applications, leading to potential damage to rocket engines and gas turbines. Among various mitigation strategies, active control has been explored as a mean to decouple acoustics ...
Juan Camilo Giraldo Delgado +2 more
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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 +34 more
europepmc +2 more sources