Results 101 to 110 of about 103,965 (200)

A hybrid CFD-neural network framework for the early prediction of longitudinal thermo-acoustic instabilities in hydrogen-fueled gas turbine combustors

Next Energy
This study introduces a hybrid Computational Fluid Dynamics–Neural Network (CFD–NN) framework for real-time prediction of longitudinal thermo-acoustic instabilities in hydrogen-fueled gas turbine combustors—critical for future clean energy systems.
Oyinbonogha Fred Agonga, Norazila Othman, Mohd Fairus Mohd Yasin   +2 more
doaj   +1 more source

Sound generation and control of thermoacoustic instabilities by nanosecond plasma discharges

, 2016
Sound generation by nanosecond repetitively pulsed plasma discharges is investigated experimentally. High voltage pulses of 10 nanosecond duration provide rapid heating of the air.
Bölke, Olaf, Lacoste, Deanna, Moeck, Jonas P.   +2 more
core  

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

Flame dominated thermoacoustic instabilities in a system with high acoustic losses [PDF]

, 2016
The thermoacoustic stability behaviour of a flame is experimentally investigated in the presence of large acoustic losses. Recently it has become clear that under such conditions an instability can occur due to an intrinsic local feedbackloop at the heat
Hoeijmakers, P.G.M., Lopez, I Ines, Nijmeijer, H Henk, de Goey, L.P.H., Hoeijmakers, PGM Maarten, Nijmeijer, H., Goey, LPH Philip de, Kornilov, V.N., Kornilov, VN Viktor, de Goey, L.P.H.; id_orcid, Lopez Arteaga, I.   +10 more
core   +2 more sources

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