Articles with "flame front" as a keyword



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Analysis of combustion noise of a turbulent premixed slot jet flame

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Published in 2017 at "Combustion and Flame"

DOI: 10.1016/j.combustflame.2016.08.001

Abstract: The sound generation due to the interaction between the turbulent flow field and a premixed slot flame is numerically studied by a hybrid analysis. The impact of varying gas expansion ratios and Markstein lengths is… read more here.

Keywords: response; flame; gas expansion; flame front ... See more keywords
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Experimental investigation of turbulent flames in uniform dispersions of ethanol droplets

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Published in 2017 at "Combustion and Flame"

DOI: 10.1016/j.combustflame.2017.01.014

Abstract: Abstract A turbulent flame in an ethanol droplet-laden uniform mixture is investigated at overall equivalence ratios ( ϕ ov ) of 0.62, 0.72 and 0.82, using a piloted Bunsen burner. Imaging of OH* chemiluminescence and… read more here.

Keywords: flame; experimental investigation; droplet; flame front ... See more keywords
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Effects of free stream flow turbulence on blowoff characteristics of bluff-body stabilized premixed flames

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Published in 2018 at "Combustion and Flame"

DOI: 10.1016/j.combustflame.2017.12.002

Abstract: Abstract In this article we report on an experimental investigation of a bluff-body stabilized lean premixed flame subjected to different levels of free stream turbulence intensities (4, 14, 24 and 30%) at conditions approaching blowoff.… read more here.

Keywords: blowoff; flame; turbulence; flame front ... See more keywords
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Shock focusing and detonation initiation at a flame front

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Published in 2019 at "Combustion and Flame"

DOI: 10.1016/j.combustflame.2019.02.012

Abstract: Abstract Multidimensional numerical simulations were performed to study the interaction of focused shock waves and a flame front leading to detonation initiation. The fully compressible Navier–Stokes equations, coupled with a chemical-diffusive model for energy release… read more here.

Keywords: detonation; detonation initiation; shock focusing; flame front ... See more keywords
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Effects of an obstacle on the deflagration behavior of premixed liquefied petroleum gas-air mixtures in a closed duct

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Published in 2021 at "Energy"

DOI: 10.1016/j.energy.2021.121291

Abstract: Abstract This work aims to investigate the influences of an obstacle on the deflagration behaviors of premixed liquefied petroleum gas (LPG)-air mixtures. Experiments were conducted in a closed tube, with a length/diameter ratio of 5.9,… read more here.

Keywords: gas; deflagration; air; pressure ... See more keywords
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Effect of the initial pressures on evolution of intrinsically unstable hydrogen/air premixed flame fronts

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Published in 2019 at "International Journal of Hydrogen Energy"

DOI: 10.1016/j.ijhydene.2019.04.220

Abstract: Abstract Laminar premixed flame front may be wrinkled due to the hydrodynamic and diffusive-thermal instabilities. This may lead to the occurrence of the cellular structure and the self-acceleration. The lean unstable hydrogen/air premixed flame at… read more here.

Keywords: hydrogen air; air premixed; premixed flame; flame front ... See more keywords
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Influence of porous walls on flame front perturbations in hydrogen-air mixtures

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Published in 2020 at "International Journal of Hydrogen Energy"

DOI: 10.1016/j.ijhydene.2020.10.028

Abstract: Abstract The evolution of flame front perturbations during propagation in a half-open channel with a porous coating was studied. The porous coating generates disturbances in the flow and affects the magnitude of the disturbance of… read more here.

Keywords: front perturbations; porous coating; flame front; size ... See more keywords
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Flame front evolution and laminar flame parameter evaluation of buoyancy-affected ammonia/air flames

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Published in 2021 at "International Journal of Hydrogen Energy"

DOI: 10.1016/j.ijhydene.2021.09.099

Abstract: Abstract For flames with very low burning speed, the flame propagation is affected by buoyancy. Flame front evolution and laminar flame parameter evaluation methods of buoyancy-affected flame have been proposed. The evolution and propagation process… read more here.

Keywords: flame; flame front; laminar flame; ammonia air ... See more keywords
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Combustion and Flame Front Morphology Characterization of H2–CO Syngas Blends in Constant Volume Combustion Bombs

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Published in 2021 at "Energy & Fuels"

DOI: 10.1021/acs.energyfuels.0c03598

Abstract: The need to develop new, alternative, and bio-origin fuels for use in internal combustion engines has motivated the realization of this research, which aims to characterize the combustion process s... read more here.

Keywords: front morphology; combustion flame; combustion; characterization syngas ... See more keywords
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Electrohydrodynamic instability of premixed flames under manipulations of dc electric fields.

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Published in 2018 at "Physical Review E"

DOI: 10.1103/physreve.97.013103

Abstract: We report an electrohydrodynamic instability in a premixed stagnation flame under manipulations of a dc electric field. This instability occurs when the electric field strength is at a certain value below the breakdown threshold, which… read more here.

Keywords: instability premixed; flame; flame front; manipulations electric ... See more keywords
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Flame Front Vector and Turbulence Analysis for Varied Equivalence Ratios in an Optical Direct-Injection Spark-Ignition Engine

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Published in 2023 at "SAE International Journal of Engines"

DOI: 10.4271/03-16-07-0052

Abstract: Homogenous lean combustion in a direct-injection spark-ignition (DISI) engine is a promising pathway to achieve significantly improved fuel economy, making already competitive petrol engines even more attractive as a future powertrain option. This study aims… read more here.

Keywords: front vector; flame; equivalence; engine ... See more keywords