Results 31 to 40 of about 255 (161)

Observation of droplet behavior of emulsified fuel in secondary atomization in flame

open access: yesJournal of Thermal Science and Technology, 2014
The study aims to visualize droplet behaviors of emulsified fuel in secondary atomization in a flame stabilized in a laminar counterflow field. To study secondary atomization characteristics in the flame, direct photography of the flame using a color ...
Hirotatsu WATANABE   +5 more
doaj   +1 more source

Planar Light Extinction Measurement of Soot Volume Fraction in Laminar Counterflow Diffusion Flames

open access: yesFrontiers in Mechanical Engineering, 2021
A cost-effective and straightforward light extinction method has been extensively used for measurement of soot volume fraction (SVF) in sooting flames.
Jiwei Zhou   +7 more
doaj   +1 more source

Extinction behavior of addition of PMMA powder into counterflow diffusion flame of methane and nitrogen and high temperature air

open access: yesNihon Kikai Gakkai ronbunshu, 2020
A counter-flow diffusion flame formed of a fuel consisting of methane and nitrogen, and a oxidizer of air heated to 500℃ was applied to clarify the influence on the extinction limit when fine powder of polymethyl methacrylate (PMMA) was added to the fuel.
Hironao HANAI, Toshiki SUDA
doaj   +1 more source

Cellular structures of laminar lean premixed H2/CH4/air polyhedral flames

open access: yesApplications in Energy and Combustion Science, 2023
Fundamental studies on the effects of differential diffusion of hydrogen (H2) on flame structure are motivated as the high diffusivity of H2 presents challenges for the modeling and optimization of combustion systems.
Shuguo Shi   +6 more
doaj   +1 more source

Numerical analysis of the unsteady transition of multiple laminar methanol/air spray flame structures in the counterflow configuration

open access: yesApplications in Energy and Combustion Science
The counterflow configuration is a well-established setting to study the structure of laminar spray flames. Typically, the similarity transformation is introduced to transfer the two-dimensional gas-phase equations into one-dimensional governing ...
Jiawei Wan, Eva Gutheil
doaj   +1 more source

Stability and Blowout Behavior of Jet Flames in Oblique Air Flows

open access: yesJournal of Combustion, 2012
The stability limits of a jet flame can play an important role in the design of burners and combustors. This study details an experiment conducted to determine the liftoff and blowout velocities of oblique-angle methane jet flames under various air ...
Jonathan N. Gomes   +2 more
doaj   +1 more source

The Effects of Cracking Ratio on Ammonia/Air Non-Premixed Flames under High-Pressure Conditions Using Large Eddy Simulations

open access: yesEnergies, 2023
Ammonia is a promising carbon-free fuel. However, one of the main challenges for ammonia combustion is the high level of NO emissions. In this study, simulations were conducted for ammonia/air laminar counterflow flames and turbulent non-premixed jet ...
Chengming Wang   +3 more
doaj   +1 more source

Experimental and numerical study of PMMA combustion in counterflow configuration

open access: yesCase Studies in Thermal Engineering
PMMA burning in counterflow has been studied experimentally and numerically. Thermal and chemical structure including concentrations of main species, i.e.
Artem A. Shaklein   +6 more
doaj   +1 more source

Reactive Structures of Ammonia MILD Combustion in Diffusion Ignition Processes

open access: yesFrontiers in Energy Research, 2021
Reactive structures have been analyzed, when ammonia is used as a fuel, in a steady 1D counterflow diffusion flame layer, mimicking diffusion ignition processes.
G. Sorrentino   +5 more
doaj   +1 more source

Two-dimensional effects in counterflow methane flames [PDF]

open access: yesProceedings of the Combustion Institute, 2017
Abstract The effect of flowfield geometry on flame propagation and extinction of atmospheric CH4/N2/air flames was studied in the counterflow configuration. Laminar flame speeds and extinction strain rates for lean premixed and non-premixed flames were measured in axisymmetric burners producing either uniform or non-uniform axial velocity exit ...
R. Roe Burrell   +4 more
openaire   +1 more source

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