Results 101 to 110 of about 103,692 (197)

Influence of equivalence ratio and hydrogen addition on thermoacoustic instabilities in premixed methane and propane flames in vertical tubes

Case Studies in Thermal Engineering
This research examines the behavior of premixed flames within a vertical tube, considering both an open and a closed end configuration. The study utilizes a pilot flame as the ignition source.
Abdullah M.A. Alsharif, Robert Woolley
doaj   +1 more source

Nonlinear analysis of thermoacoustic instabilities

, 2011
Thermoacoustic instabilities are prevalent in many practical combustion systems. They occur when fluctuations in pressure and heat release are in phase and can lead to catastrophic combustor damage.
Noble, Andrew C
core   +1 more source

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

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

Physically Interpretable AI-Driven Prediction of Instability Regimes in Hydrogen-Enriched Premixed Combustion

Düzce Üniversitesi Bilim ve Teknoloji Dergisi
Hydrogen-enriched combustion is central to decarbonizing high-efficiency energy systems, yet its practical adoption is limited by the onset of thermoacoustic and hydrodynamic instabilities in premixed flames.
Ali Can Yılmaz
doaj   +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 with a V-Flame

, 2016
In this paper, results from a numerical solver for the Helmholtz equation using the Finite Element Method (FEM) for predicting thermoacoustic instabilities are presented.
Na, Wei, Boij, Susann, Efraimsson, Gunilla   +2 more
core   +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

Causality and intrinsic thermoacoustic instability modes

, 2014
Direct numerical simulation of a confined laminar premixed flame has been performed in an anechoic combustor, showing self-sustained intrinsic thermoacoustic oscillations. Theoretical predictions based on acoustic jump relations and the n − τ model for the flame are presented and causality concerns are discussed.
Courtine, Emilien, Selle, Laurent, Nicoud, Franck, Polifke, Wolfgang, Silva, Camilo, Bauerheim, Michaël, Poinsot, Thierry   +6 more
openaire   +2 more sources

Universality in spectral condensation. [PDF]

Sci Rep, 2020
Pavithran I, Unni VR, Varghese AJ, Premraj D, Sujith RI, Vijayan C, Saha A, Marwan N, Kurths J.   +8 more
europepmc   +1 more source