An Analytical Examination of Various Criteria for Defining Autoignition Within Heated Methane-Air Homogeneous Mixtures

[+] Author and Article Information
G. Zhou, G. A. Karim

Department of Mechanical Engineering, University of Calgary, Calgary, Alberta, Canada T2N 1N4

J. Energy Resour. Technol 116(3), 175-180 (Sep 01, 1994) (6 pages) doi:10.1115/1.2906440 History: Received May 01, 1993; Revised February 10, 1994; Online April 16, 2008


Different criteria for establishing ignition within reactive methane-air mixtures are discussed. It is shown that for relatively low initial mixture temperature using the different ignition criteria tends to produce very small relative differences in the values of the ignition delay. These differences can become very significant at relatively high initial mixture temperatures. Criteria for ignition based on sudden changes in pressure and temperature are recommended for reliably establishing the onset of autoignition, both in modeling and experimental studies.

Copyright © 1994 by The American Society of Mechanical Engineers
Topics: Methane , Mixtures
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