2323 平等及び不平等電界が予混合燃焼に及ぼす影響(S27-2 エンジンの点火・燃焼の新展開(2),21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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The purpose of this study is to elucidate flame propagation behavior under the application of uniform and non-uniform electric fields by using a constant volume vessel. Electric fields are applied in the direction of the chamber's vertical axis. A Nd:YAG laser is used to apply laser-induced breakdown for igniting the mixture at the center of the combustion chamber. A homogeneous propane-air mixture is supplied at three equivalence ratios of 0.7, 1.0 and 1.5. Under a uniform electric field, the flame is vertically oblong, resulting in a cylindrically shaped flame, however flame front is merely deformed and the combustion duration is not so influenced by the electric field. In a non-uniform electric field, turbulence occurs at flame front and the whole flame front moves downward, and the combustion is markedly enhanced when the input voltage is larger than 12 [kV] because both the electrical potential and corona wind affect combustion.
社団法人日本機械学会の論文
2008-08-02