Results 101 to 110 of about 124,231 (205)

Benchmarking machine learning models against full-scale acoustic absorption measurements in gas turbine liners

Fuel Communications
Accurate prediction of acoustic energy absorption in gas turbine combustors is critical for enhancing performance, mitigating thermoacoustic instabilities, and reducing emissions.
Abdullah Shahjalal, Roy Kalawsky, Demetrios Joannou, Faruk Ozdemir   +3 more
doaj   +1 more source

Modeling and control of thermoacoustic instabilities

, 2003
This work deals with modeling and control of thermoacoustic combustion instabilities in lean premixed combustion systems. Because of the complex interactions present in thermoacoustic systems, a network modeling approach is used. The model of each network element or subsystem is obtained analytically, numerically, or by making use of experimental ...
openaire   +1 more source

Preventing a global transition to thermoacoustic instability by targeting local dynamics. [PDF]

Sci Rep, 2022
George NB, Raghunathan M, Unni VR, Sujith RI, Kurths J, Surovyatkina E.   +5 more
europepmc   +1 more source

Steady-state statistics, emergent patterns and intermittent energy transfer in a ring of oscillators. [PDF]

Nonlinear Dyn, 2022
Pedergnana T, Noiray N.
europepmc   +1 more source

Numerical prediction of thermoacoustic instabilities in a three-dimensional combustor model

, 2019
In this paper, the numerical work focus on prediction of the thermoacoustic instabilities for a three-dimensional combustor model. A numerical methodology solving the Helmholtz equation with the Flame Describing Function (FDF) in frequency domain is used.
Na, Wei,, Boij, Susann,
core   +1 more source

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

Nanophotonics, 2023
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   +1 more source

On singularities and instability of reconstruction in thermoacoustic tomography

, 2009
We consider the problem of thermoacoustic tomography (TAT), in which one needs to reconstruct the initial value of a solution of the wave equation from its value on an observation surface. We show that if some geometric rays for the equation do not intersect the observation surface, the reconstruction in TAT is not Hölder stable.
openaire   +2 more sources

Flame Propagation Characteristics of Syngas-Air in the Hele-Shaw Duct with Different Equivalence Ratios and Ignition Positions. [PDF]

ACS Omega, 2022
Diao S, Wen X, Guo Z, He W, Deng H, Wang F.   +5 more
europepmc   +1 more source

Subharmonic and Non-Subharmonic Pulsed Control of Thermoacoustic Instabilities: Analysis and Experiment

, 2002
Thermoacoustic instabilities are a problem in modern pre-mixed combustors causing reduced performance and leading in the extreme to combustor failure from excessive pressure cycles.
Carson, J. Matthew
core  

Knock detection algorithms for separating thermoacoustic instabilities from end-gas ignition in hydrogen engines

The objectives of this study were to identify the factors contributing to combustion instabilities during operation with premixed hydrogen near stoichiometric conditions and to evaluate the performance of two alternative knock detection algorithms, Knock
Petter Dahlander, Jan Eismark, Elvin Zanjani, Mats Andersson   +3 more
core   +1 more source