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Effects of Energy Deposition Schedule on Minimum Ignition Energy in Spark Ignition of Methane/air Mixtures by Takao Yuasa; Shinichi Kadota; Mitsuhiro Tsue; Michikata Kono; Hiroshi Nomura; Yasushige Ujiie is a Engineering article available to read on EtoBox.

What is Effects of Energy Deposition Schedule on Minimum Ignition Energy in Spark Ignition of Methane/air Mixtures about?

A two-dimensional numerical analysis with elementary reactions including ion-molecule reactions has been performed to investigate the effect of energy deposition schedule on the minimum ignition energy in the composite spark ignition of methane/air mixtures. The chemical reaction scheme for a methane/air mixture, which has 27 species including 5 ion molecules and electrons and 81 elementary reactions with ion-molecule reactions, is employed in the calculation. Experiments are also carried out, and a qualitative comparison between experiment and calculation is made. The calculated result showed that the optimum ratio of capacity spark energy, for which the minimum ignition energy has a lowest value, exists. The increase in the capacity spark energy leads to a decrease in the formation of radicals during the spark discharge, while it also leads to an active reaction after spark discharge, which is due to the enhanced supply of the unburned mixture into the flame kernel by the inward flow along electrodes. The qualitative trend of calculated and experimental results shows good agreement for the relationship between the ratio of capacity spark energy and the minimum ignition energy. Th

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Author

Takao Yuasa; Shinichi Kadota; Mitsuhiro Tsue; Michikata Kono; Hiroshi Nomura; Yasushige Ujiie

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd; Elsevier BV (ISSN 1540-7489)

Published

2002

Language

EN

Field

Engineering (Physical Sciences)