日本機械学会論文集B編
Online ISSN : 1884-8346
ISSN-L : 1884-8346
一般論文
ノズル内流れの数値解析によるキャビテーション気泡混合燃料噴射方法の検討
増田 糧河村 清美永岡 真増渕 匡彦小森 啓介
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2012 年 78 巻 793 号 p. 1584-1597

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A liquid fuel injection nozzle with a novel fuel atomization strategy which actively utilizes the effect of collapse of cavitation bubbles in a liquid jet is proposed. The nozzle comprises two orifices and an intermediate cavity between the orifices. The role of the upstream first orifice is to generate the cavitation bubbles at both inlet and exit of the orifice. The intermediate cavity is placed to hold the cavitation bubble within it. The role of the downstream second orifice is to mix the cavitation bubbles and liquid fuel, and to inject the mixture into atmosphere. Each size and relative positions of the first orifice, the intermediate cavity and the second orifice were studied using multi-phase computational fluid dynamics. Finally, a poppet type nozzle whose void fraction at the nozzle exit is 0.5 was designed.

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© 2012 一般社団法人 日本機械学会
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