Results 91 to 100 of about 124,231 (205)

Predicted Thermoacoustic Flame Response at Megawatt Scale in a Near-Stoichiometric Atmospheric Industrial Furnace

Energies
While gas-turbine combustors have received much research attention, the forced response of large atmospheric industrial flames is much less studied. To improve the understanding of thermoacoustic instabilities in industrial combustion systems, the forced
Jesse Hofsteenge, Jim Kok
doaj   +1 more source

Universality of oscillatory instabilities in fluid mechanical systems

New Journal of Physics
Oscillatory instability emerges amidst turbulent states in experiments in various turbulent fluid and thermo-fluid systems such as aero-acoustic, thermoacoustic and aeroelastic systems. For the time series of the relevant dynamic variable at the onset of
Vladimir García-Morales, Shruti Tandon, Jürgen Kurths, R I Sujith   +3 more
doaj   +1 more source

Investigation of High-Frequency Thermoacoustic Instabilities

, 2021
Dissertation, Universität Duisburg-Essen ...
openaire   +3 more sources

Acoustic and Large Eddy Simulation studies of azimuthal modes in annular combustion chambers [PDF]

, 2012
The objectives of this paper are the description of azimuthal instability modes found in annular combus- tion chambers using two numerical tools: (1) Large Eddy Simulation (LES) methods and (2) acoustic solv- ers.
Wolf, Pierre, Staffelbach, Gabriel, Müller, Jens-Dominik, Gicquel, Laurent Y.M., Poinsot, Thierry   +4 more
core   +1 more source

Time Series and Spectral Analysis of Thermoacoustic Oscillations for Propane-Oxyfuel Combustion in a Swirl-Stabilized, Nonpremixed Combustor. [PDF]

ACS Omega, 2023
Talal Q, Abubakar Z, Shakeel MR, AlSwat MS, Mokheimer EMA.   +4 more
europepmc   +1 more source

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

Experimental Study of a Transcritical Thermoacoustic Device [PDF]

, 2018
A prototype transcritical thermoacoustic engine has been constructed and tested, yielding thermoacoustic results. Three different thermoacoustic “stack” designs have been evaluated in the present study.
Alexander, Dayle N.
core   +1 more source

Modelling of Thermoacoustic Combustion Instabilities Phenomena: Application to an Experimental Test Rig [PDF]

, 2014
Lean premixed combustion chambers fuelled by natural gas and used in modern gas turbines for power generation are often affected by combustion instabilities generated by mutual interactions between pressure fluctuations and heat oscillations produced by ...
Edoardo Bertolotto, Giovanni Campa, Sergio Rizzo, Alessandro Saponaro, Federico Bonzani, Davide Laera, Camporeale, Sergio Mario, Antonio Ferrante   +7 more
core   +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

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