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Experimental and analytical studies on the ignition of methaneacetylene mixtures

✍ Scribed by K.S. Krishnan; R. Ravikumar; K.A. Bhaskaran

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
589 KB
Volume
49
Category
Article
ISSN
0010-2180

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✦ Synopsis

An experimental investigation of the ignition of methane-acetylene--oxygen-argon mixtures was carried out behind reflected shock waves over the temperature range 1400-1900 K and reaction pressures between l and 4 bar. Pure methane, acetylene, and methane-acetylene mixtures (C2H2/CH 4 = 0. I-I) were used in the investigation. The observed ignition delay of acetylene-methane mixtures lie between those of pure methane and acetylene. A 53-step reaction mechanism for the combined oxidation of methane-acetylene mixture was numerically integrated to yield the rate of change with time of the species concentration, temperature, and pressure. The computed ignition delays compare very well with the experimental results, and since the ignition delays for methane-acetylene mixtures lie between those of pure methane and acetylene, it is suggested that a chemical coupling exists between the two oxidation systems.

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