Results 31 to 40 of about 2,046,471 (351)

Physical and mathematical modeling of ignition of methane-air mixture in the presence of coal microparticles

open access: yesMATEC Web of Conferences, 2017
The results of numerical investigation of the ignition of a stoichiometric methane-air mixture in the presence of carbon particles with diameters of 20-52 μm in the temperature range 950-1150 K and pressures of 1.5-2.0 MPa are presented.
Fedorov Aleksandr, Tropin Dmitry
doaj   +1 more source

Dependence of Biofuel Ignition Chemistry on OH-Initiated Branching Fractions

open access: yesFrontiers in Mechanical Engineering, 2021
ion of hydrogen by ȮH is the dominant initiation step in low-temperature oxidation of biofuels. Theoretical chemical kinetics calculations for such reactions provide a direct means of quantifying rates of abstraction, which are critical to modeling ...
Samuel W. Hartness   +2 more
doaj   +1 more source

The surface activation of boron to improve ignition and combustion characteristic

open access: yesDefence Technology, 2022
Boron is a very promising and highly attractive fuel because of high calorific value. However, the practical applications in explosives and propellants of boron have been limited by long ignition delay time and low combustion efficiency.
Jian Wang   +4 more
doaj   +1 more source

Laser ignition of an optically sensitised secondary explosive by a diode laser [PDF]

open access: yes, 2016
As a green technology, laser ignition of a relatively insensitive secondary explosive has been experimentally investigated. The explosive, hexanitrostilbene (HNS), was doped with one of two optical sensitizers, carbon black or a laser absorbing dye ...
Ahmad, S. R., Fang, X.
core   +1 more source

An experimental and chemical kinetic modeling study of 1,3-butadiene combustion: Ignition delay time and laminar flame speed measurements

open access: yesCombustion and Flame, 2018
Ignition delay times for 1,3-butadiene oxidation were measured in five different shock tubes and in a rapid compression machine (RCM) at thermodynamic conditions relevant to practical combustors.
Chong-Wen Zhou   +19 more
semanticscholar   +1 more source

Effects of Hydrogen Addition on Premixed Combustion of Kerosene in SI Engine

open access: yesEnergies, 2023
Spark ignition (SI) engines fueled with kerosene have broad application prospects in unmanned aviation vehicles. The knock phenomenon of kerosene in SI engines is a huge challenge, leading to a much lower power output than gasoline engines.
Yuxuan Zhao, Enhua Wang, Zhicheng Shi
doaj   +1 more source

Shock tube studies on ignition delay and combustion characteristics of oxygenated fuels under high temperature

open access: yesInternational Journal of Energy Research, 2020
A comparative study on ignition delay time and combustion characteristics of four typical oxygenated fuel/air mixtures of dimethyl ether (DME), diethyl ether (DEE), ethanol and E92 ethanol gasoline was conducted through the chemical shock tube.
Zhihao Ma   +4 more
semanticscholar   +1 more source

Thermodynamic analysis of diesel engine ignition delay under low load conditions

open access: yesEnergy Reports, 2022
In recent decades, renewable energies (e.g., wind and solar) were introduced to reduce the dependency of diesel generation in remote areas and islands power systems.
A.G.M.B. Mustayen   +4 more
doaj   +1 more source

Studying solid fuel ignition by CO2-laser

open access: yesMATEC Web of Conferences, 2017
The ignition data on Siberian bituminous coal and lignite by a continuous CO2-laser were presented in current work. Measurements were carried out at the heat flux density range of 90–150 W/cm2 in air.
Korotkikh Alexander   +2 more
doaj   +1 more source

Ignition characteristics of nitromethane-doped ethanol in a heated shock tube

open access: yesEnergetic Materials Frontiers, 2021
Ignition delay times of nitromethane-doped ethanol dual fuels are measured under the micro-combustion engine conditions (8 ​× ​105 ​Pa and 904–1477 ​K). The promotion effect of nitromethane on ethanol ignition is more pronounced at a fuel-lean condition;
Yan-lei Shang   +7 more
doaj   +1 more source

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