Results 81 to 90 of about 541 (112)

Ignition delay time in swirling supersonic flow

Acta Astronautica, 2013
Abstract Supersonic hydrogen–air cylindrical mixing layer is numerically analyzed to investigate the effect of inlet swirl on ignition delay time in scramjets. Combustion is treated using detailed chemical kinetics. One-equation turbulence model of Spalart and Allmaras is chosen to study the problem and advection upstream splitting method is used as ...
openaire   +1 more source

Conditions and delay time of ignition of iron microparticles in oxygen

Journal of Engineering Physics and Thermophysics, 2012
Experiments on autoignition and combustion of iron microparticles in oxygen have been conducted. The parameters of the gas medium were created using a rapid-compression machine. Investigations have been carried out on powders with particle size from 20 to 125 μm at an oxygen pressure of to 28 MPa and a temperature from 650 to 1100 K. The ignition delay
V. V. Leshchevich, O. G. Penyazkov, A. V. Fedorov, A. V. Shul’gin, J.-C. Rostaing   +4 more
openaire   +1 more source

Kinetic effects of nanosecond discharge on ignition delay time

Chinese Journal of Chemical Engineering, 2016
Abstract The effects of nanosecond discharge on ignition characteristics of a stoichiometric methane–air mixture without inert diluent gas were studied by numerical simulation at 0.1 MPa and an initial temperature of 1300 K. A modified non-equilibrium plasma kinetic model was developed to simulate the temporal evolution of particles produced during ...
Xingqian Mao, Guoxiu Li, Qi Chen, Yujun Zhao   +3 more
openaire   +1 more source

Ignition Delay-Times of n-Pentane in a Shock Tube

1995
The combustion kinetics of n-pentane was investigated in detail for the first time. Ignition delay times of n-C5H12 and Oxygen mixtures diluted in Argon were measured over a wide range of compositions, pressures and temperatures. The 240 experiments were statistically correlated to an overall equation $$\tau = {10^{ - 12.8}}\exp [ + 34610/RT ...
Alexander Burcat, Michael Dvinyaninov
openaire   +1 more source

Determinants of ignition times: Topographies of cell assemblies and the activation delays they imply

Behavioral and Brain Sciences, 2004
Abstract The cell assembly model of language posits that words are laid down in the cortex by discrete sets of neurons distributed over specific parts of the brain. The strong internal links of these “word webs” may not only bind articulatory and acoustic knowledge of a lexical item, they may also link word and meaning; for example, by connecting ...
Friedemann, Pulvermüller, Bettina, Mohr
openaire   +2 more sources

High temperature ignition delay times of C5 primary alcohols

Combustion and Flame, 2013
Abstract Ignition delay times of the three C5 primary alcohol isomers (n-pentanol, iso-pentanol and 2-methyl-1-butanol) were measured behind reflected shock waves. Experiments were conducted in the temperature range of 1100–1500 K, pressures of 1.0 and 2.6 atm, equivalence ratios of 0.25, 0.5 and 1.0, and O2 concentration in the fuel/O2/Ar mixtures ...
Chenglong Tang, Liangjie Wei, Xingjia Man, Jiaxiang Zhang, Zuohua Huang, Chung K. Law   +5 more
openaire   +1 more source

Combustion Reaction Mechanisms from Ignition Delay Times

1981
Ignition studies behind reflected shock waves in a single pulse shock tube are described for three combustion systems: 1. C2N2+O2→CO+N2 2. COS+O2→CO+SO2 3.
openaire   +1 more source

Effect of Ignition Delay Time on Autoignited Laminar Lifted Flames

Transactions of the Korean Society of Mechanical Engineers B, 2011
Autoignition characteristic is an important parameter for designing diesel or PCCI engines. In particular, diesel spray flames are lifted from the nozzle and the initial flame is formed by an autoignition phenomenon. The lifted nature of diesel spray flames influences soot formation, since air will be entrained into the spray core by the entrainment of
openaire   +1 more source

Ignition delay times of ram accelerator mixtures

32nd Joint Propulsion Conference and Exhibit, 1996
Eric Petersen, David Davidson
openaire   +1 more source

Assessment of the Ignition Delay Times Criteria for Hydrogen Combustion

World Congress on Momentum, Heat and Mass Transfer, 2023
Guido Saccone, Christer Fureby, Marco Marini   +2 more
openaire   +1 more source