Results 31 to 40 of about 1,089,540 (201)

Effect of Pressure, Environment Temperature, Jet Velocity and Nitrogen Dilution on the Liftoff Characteristics of a N2-in-H2 Jet Flame in a Vitiated Co-flow

open access: yesEurasian Chemico-Technological Journal, 2014
The CO2 emission prevention advantage of generating power with high hydrogen content fuels using gas turbines motivates an improved understanding of the ignition behavior of hydrogen in premixed and partially premixed environments.
A. North   +4 more
doaj   +1 more source

A new multi-dimensional flamelet generated manifolds approach for approximating partially premixed flame structure

open access: yesJournal of Thermal Science and Technology, 2015
A new multi-dimensional flamelet generated manifolds(MFM) approach is proposed based on solving multi-dimensional flamelet equation set in mixture fraction Z and normalized flamelet progress variable c coordinate, to capture both non-premixed and ...
Yuxin WU   +3 more
doaj   +1 more source

Large Eddy Simulation on Blow-Off Limit of Methane and Hydrogen-Mixed Gas

open access: yesShanghai Jiaotong Daxue xuebao, 2022
The blow-off limits of methane and hydrogen-mixed gas on the Sydney inhomogeneous inflow jet burner were calculated and studied by large eddy simulation.
ZHOU Xirui, WANG Ping, ZENG Haixiang, ZHANG Yang, PRASHANT Shrotriya, ANTONIO Ferrante, QI Haotian
doaj   +1 more source

Combustion Visualization of Partially Premixed and Non Premixed Diesel Fuel on Single Cylinder Optical Engine

open access: yesEuropean Mechanical Science, 2019
Ignition and flame propagation phenomenon of dieselfuel combustion was investigated in an optical single cylinder engine. Conventionalnon-premixed diesel combustion and partially premixed combustion types were investigated.Experiments were performed on ...
Cengizhan Cengiz   +4 more
doaj   +1 more source

Analysis of the partially premixed combustion in a labscale swirl-stabilized burner fueled by a methane-hydrogen mixture [PDF]

open access: yesE3S Web of Conferences, 2021
Nowadays hydrogen is gaining more and more attention by Industry, Academia and Politics. Being a carbon free fuel, it is supposed to have a key role in the future energy scenario, especially if produced by renewable sources.
Stefanizzi Michele   +5 more
doaj   +1 more source

Effects of fuel-hydrogen levels on combustion, operability, and emission parameters of CH4/H2/O2/CO2 stratified flames in a dual-swirl gas turbine burner

open access: yesEngineering Applications of Computational Fluid Mechanics, 2023
Towards the development of emission-free hydrogen gas turbines with wider operability limits, the combined effects of lean premixed combustion, dual combustion (combustion staging), hydrogen enrichment, and oxy-fuel combustion on the combustion and ...
Medhat A. Nemitallah   +2 more
doaj   +1 more source

Numerical simulation of the influence of partial premixing on the propagation of partially premixed flames

open access: yesComputers & Mathematics with Applications, 2013
This paper is concerned with the analysis of the influence of a partial premixing between fuel and oxidizer at one of the boundaries of a porous walls channel. The mathematical formulation of this problem is performed by means of a constant-density thermodiffusive model under a single-step irreversible chemical reaction.
openaire   +2 more sources

A Computational Fluid Dynamics Study of Turbulence, Radiation, and Combustion Models for Natural Gas Combustion Burner

open access: yesBulletin of Chemical Reaction Engineering & Catalysis, 2018
This paper presents a Computational Fluid Dynamics (CFD) study of a natural gas combustion burner focusing on the effect of combustion, thermal radiation and turbulence models on the temperature and chemical species concentration fields.
Yik Siang Pang   +3 more
doaj   +1 more source

Explore artificial neural networks for solving complex hydrocarbon chemistry in turbulent reactive flows

open access: yesFundamental Research, 2022
Global warming caused by the use of fossil fuels is a common concern of the world today. It is of practical importance to conduct in-depth fundamental research and optimal design for modern engine combustors through high-fidelity computational fluid ...
Jian An, Fei Qin, Jian Zhang, Zhuyin Ren
doaj   +1 more source

Measurement and Identification of Flame Describing Function (FDF) Based on Parallel Subsystem Model

open access: yesAerospace
Because of the need for low pollutant emissions, industrial gas turbines typically use partially premixed gases for combustion. However, the nonlinear dynamic characteristics of partially premixed flames have not been studied sufficiently.
Zhaohui Wang, Yichen Wang, Min Zhu
doaj   +1 more source

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