熱面点火に及ぼす触媒反応の影響に関する研究(熱工学,内燃機関,動力など)

概要

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The hot surface ignition of methane-air mixtures in microgravity has been studied experimentally and numerically. Experiments on the ignition of the mixtures with electrically heated nickel wire and platinum wire in microgravity have been performed. Numerical calculations, including the catalytic reaction rate for platinum, have been performed to understand the experimental results obtained in microgravity. The ignition delays and ignition temperatures for a wide range of equivalence ratios were investigated. Experimental results show that the ignition temperatures with platinum wire have a maximum near the stoichiometric mixture ratio, while those with nickel wire increase as the equivalence ratio increases. Ignition temperatures with platinum wire are higher than those with nickel wire. Numerical results show that reactants next to platinum wire are consumed by the catalytic reaction. Therefore, a higher temperature is required to ignite mixtures with platinum wire. The catalytic inhibition of hot surface ignition is simulated successfully by the numerical model.
一般社団法人日本機械学会の論文
1997-07-25