Results 81 to 90 of about 1,003 (200)

UV and Visible Radiation Characteristics of Thermoacoustic Instabilities in an Ammonia–Methane Premixed Swirl-Stabilized Combustor

Energies
Ammonia (NH3) is a promising carbon-free energy carrier for low-carbon power generation. However, in turbulent ammonia–methane (NH3-CH4) premixed swirling flames, operating at lean conditions to limit NOX, emissions can trigger strong thermoacoustic ...
Junhui Ma, Xianglan Fu, Dongqi Chen, Le Chang, Lingxue Wang, Yingchen Shi, Haocheng Wen, Bing Wang   +7 more
doaj   +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

Investigation of High-Frequency Thermoacoustic Instabilities

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

A two-way coupling for modeling thermoacoustic instabilities in a flat flame Rijke tube [PDF]

, 2009
Thermoacoustic instabilities are a serious problem for lean premixed combustion systems. Due to different time and length scales associated with the flow field, combustion, and acoustics, numerical computations of thermoacoustic phenomena are ...
Oevermann, M., Paschereit, O. C., Moeck, J., Klein, R., Schmidt, H.   +4 more
core   +1 more source

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

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

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  

Probabilistic machine learning for the elimination of thermoacoustic instabilities

Thermoacoustic instabilities have hindered the development of high energy density combustors, such as those in jet engines, gas turbines or rockets, for decades.

core   +2 more sources

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

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