Results 171 to 180 of about 10,186 (228)

The autoignition of polymers

Journal of Applied Polymer Science, 1973
AbstractA consistent and relatively simple method is presented for studying the unpiloted ignition of polymeric materials in contact with hot air. The ignition behavior of a particular polymer as determined by its bulk properties may be characterized by the relationship between sample mass and ignition time at constant area for a series of furnace ...
Bernard Miller, J. Ronald Martin, Charles H. Meiser   +2 more
openaire   +1 more source

Effect of Residual Gases on Autoignition 2,—Measurement of Autoignition Time†

Combustion Science and Technology, 1997
The effect of OH radical in residual gases was measured by making the residual gas with less OH concentration. The residual gas (2) with less OH was produced by burning of mixtures with CO as a main fuel, while the residual gas (1) with normal OH concentration was produced by burning of a stoichiometric n-C4H10 /air mixture.
SHINJI KOJIMA, TETSUNORI SUZUOKI, MASAO KATAOKA   +2 more
openaire   +1 more source

Autoignition Characteristics of Methanol

SAE Technical Paper Series, 1996
<div class="htmlview paragraph">An experimental study was conducted to investigate the autoignition characteristics of methanol. Experimental conditions which were explored included temperatures in the range of 650-800 K, equivalence ratios of 0.2-17.0, 1 atm pressure, and reactor surface-to-volume ratios. S/V, of 0.6 cm⁻¹″
Michael J. Bowman, Richard D. Wilk
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +1 more source

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
openaire   +1 more source

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

Glowing and flaming autoignition of wood

Proceedings of the Combustion Institute, 2002
A study of the autoignition of wood by a radiant cone heater was conducted. Insulated redwood samples were exposed vertically to incident heat flux ranging from 10 to 70 kW/m2. IR thermography and normal video recording were used to view the sample surface. The surface temperature and mass loss were continuously recorded.
N. Boonmee, J.G. Quintiere
openaire   +1 more source

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

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
openaire   +1 more source