Results 121 to 130 of about 4,161 (170)

Autoignition Characteristics of Ethanol

SAE Technical Paper Series, 1996
<div class="htmlview paragraph">The autoignition characteristics of ethanol were examined in the 667-743 K temperature range at one atmosphere. A closed static reactor testing facility, of the Le Chatelier type was employed in this study. The autoignition limits for two ethanol concentrations at varied oxygen-nitrogen concentrations are mapped ...
Joseph W. Bollentin, Richard D. Wilk
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On Autoignition of Co-Flow Laminar Jets

SIAM Journal on Applied Mathematics, 2016
The authors analyze a mathematical model accounting for the thermal runaway followed by ignition in laminar jets. After a change of variables and unknowns through an adimensionalization process, they consider the system of parabolic equations \(\theta _{\zeta }=\theta _{\xi \xi }+\frac{1}{\xi } \theta _{\xi }\) for \((\xi ,\zeta )\in (0,\lambda )\times
Peter V. Gordon, Uday G. Hegde, Michael C. Hicks, Michael J. Kulis   +3 more
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Modeling cyclic dispersion in autoignition combustion

IEEE Conference on Decision and Control and European Control Conference, 2011
A two-state discrete-time model is developed for the cycle-to-cycle dynamics in lean-fueled controlled autoignition engines. The main goal is to capture the cyclic variability in the combustion phasing which is a key performance variable in combustion control.
Erik Hellström, Anna G. Stefanopoulou
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Inhibition of autoignition at high pressure

Combustion and Flame, 1973
Induction periods have been measured for the autoignition of three alkane fuels as ignited {fx222-01} and pressures close to 720°K and 2.0 MN m2 in the presence of various concentrations of these {fx222-03} itors. The inhibitors produce the same pattern of behaviour as that reported previously for {fx222-04} by hydrogen, deuterium and carbon monoxide ...
M.P. Halstead, C.P. Quinn
openaire   +1 more source

AUTOIGNITION associated with HOT STARTING

SAE Technical Paper Series, 1958
<div class="section abstract"><div class="htmlview paragraph">USING a high-speed motion picture camera, flame photographs were taken of the combustion process associated with the starting of hot gasoline engines.</div><div class="htmlview paragraph">Compression ignition at isolated points followed by normal combustion caused ...
F. W. Bowditch, R. F. Stebar
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A model for dust cloud autoignition

Combustion and Flame, 1980
The paper deals with the problem of autoignition of a cloud of solid particles uniformly dispersed in a gas with one component of which it can react exothermally. Energy equations are derived similar to those of Rumanov and Khaikin (1969) but using methods of a phase-plane representation to describe ignition conditions resulting from these equations.
C.R. Krishna, A.L. Berlad
openaire   +1 more source

Turbulent broadening of autoignition limits

Symposium (International) on Combustion, 1994
The authors present a model for calculating the autoignition time in a turbulent flow in which fuel and air are being mixed. The model is applied to the 40-atm heptane-air system. Chemical kinetics are described by a four-step reduces mechanism or a 19-step reduced mechanism. Mixing is described by a particle-tracking probability density function (PDF)
Sanjay M. Correa, Anthony J. Dean
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Autoignition of ethylene in shock waves

Russian Journal of Physical Chemistry B, 2010
The delay time of ignition of various C2H4-O2-Ar mixtures behind reflected shock waves were measured at temperatures of 1090–1520 K and a pressure of 0.65 ± 0.05 MPa. A kinetic scheme of the ignition of ethylene based on the known rate constants of the key elementary reactions was developed.
A. M. Tereza, V. G. Slutskii, E. S. Severin   +2 more
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Autoignition of methanol: Experiments and computations

International Journal of Chemical Kinetics, 2011
AbstractAn experimental and computational investigation into the autoignition of methanol under high‐pressure and low‐to‐intermediate temperature conditions is conducted. The ignition delay results have been obtained using a heated rapid compression machine, over a pressure range of 7–30 bar, a temperature range of 850–1100 K, and an equivalence ratio ...
Kamal Kumar, Chih‐Jen Sung
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An approach to the autoignition of a turbulent mixture

Acta Astronautica, 1974
Abstract This paper considers the turbulent homogeneous mixing of two reactants undergoing a one step, second order, irreversible, exothermic chemical reaction with a rate constant of the Arrhenius type. A statistically stationary turbulent velocity field is assumed given and unaffected by mass or heat production due to the chemical reaction ...
Dopazo, Cesar, O'Brien, Edward E.
openaire   +2 more sources