Results 11 to 20 of about 85,021 (301)

Single droplet ignition models via evaporation and ignition competition

open access: yesMeasurement: Sensors, 2021
There is individual droplet burning phenomenon in spray flames but the ignition prediction and criteria are lack of both experimental and theoretical study.
Wang Fang   +4 more
doaj   +1 more source

Minimum ignition energy of hydrogen–ammonia blends in air

open access: yesFuel, 2023
We present a numerical analysis to calculate the minimum ignition energy of hydrogen–ammonia blends in air at both under and over atmospheric pressure. Unlike previous calculations, we used the full compressible and reactive Navier–Stokes equations coupled with detailed chemical kinetics (San Diego mechanism for hydrogen, complemented with the San ...
E. Fernández-Tarrazo   +2 more
openaire   +2 more sources

Assessment of explosion risk for wood dust in a ventilation-dust separation installation, by determining the concentration of total dust in suspension inside of the installation [PDF]

open access: yesMATEC Web of Conferences, 2022
Most of combustible dusts present both fire and explosion hazard. Explosion may occur at certain concentrations of dust mixed with air and in the presence of an ignition source.
Kovacs Marius, Toth Lorand, Simion Sorin
doaj   +1 more source

The Minimum Ignition Energy of Coal Dust in an Oxygen Enriched Atmosphere

open access: yesChemical Engineering Transactions, 2013
In oxy/fuel combustion of coal, the pulverised coal is burned with oxygen at concentrations greater than the currently allowed value of 21 %. This may well provide advantages in carbon sequestration against other technologies such as pre- and post ...
F. Norman, J. Berghmans, F. Verplaetsen
doaj   +1 more source

Robust and ultralow-energy-threshold ignition of a lean mixture by an ultrashort-pulsed laser in the filamentation regime

open access: yesLight: Science & Applications, 2021
Laser ignition (LI) allows for precise manipulation of ignition timing and location and is promising for green combustion of automobile and rocket engines and aero-turbines under lean-fuel conditions with improved emission efficiency; however, achieving ...
Hongwei Zang   +6 more
doaj   +1 more source

Laser ignition of iso-octane air aerosols [PDF]

open access: yes, 2008
Iso-octane aerosols in air have been ignited with a focused Nd:YAG laser at pressures and temperatures of 100kPa and 270K and imaged using schlieren photography. The aerosol was generated using the Wilson cloud chamber technique.
Lawes, M.   +3 more
core   +1 more source

Theoretical limits of scaling-down internal combustion engines [PDF]

open access: yes, 2011
Small-scale energy conversion devices are being developed for a variety of applications; these include propulsion units for micro aerial vehicles (MAV). The high specific energy of hydrocarbon and hydrogen fuels, as compared to other energy storing means,
Sher, E., Sher, Ilai
core   +1 more source

On the calculation of the minimum ignition energy [PDF]

open access: yesCombustion and Flame, 2004
The success of the initiation of a deflagration by an external energy source depends on the competition of heat conduction and radical diffusion with chemical heat release.
Kurdyumov, V.   +3 more
openaire   +2 more sources

Mathematical modelling of sparkplug ignition of a coal-dust monodisperse suspension in a methane-air mixture

open access: yesMATEC Web of Conferences, 2017
The paper provides the numerical simulation of a coal-dust monodisperse suspension sparkplug ignition in a methane-air mixture. The methane-air mixture is not stoichiometric.
Krainov Alexey Yu., Moiseeva Ksenia M.
doaj   +1 more source

Effects of hydrogen addition and turbulence on ignition and meso-scale flames of propane mixtures

open access: yesJournal of Thermal Science and Technology, 2022
This study has investigated experimentally the effects of hydrogen addition and turbulence on the ignition and the flame-kernel development characteristics in isotropic and homogeneous turbulence for propane mixtures.
Masaya NAKAHARA   +4 more
doaj   +1 more source

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