著者

李 世文 榎本 良輝 神本 武征 小堀 繁治 吉川 英樹

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会論文集 B編 (ISSN:03875016)

巻号頁・発行日

vol.63, no.609, pp.1814-1819, 1997-05-25 (Released:2008-03-28)

参考文献数

14

被引用文献数

3 3

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Combusting and evaporating diesel sprays, impinging on the wall of a square combustion chamber were obtained in a rapid compression machine. The temperature fluctuations at many locations on the impinging wall surface were measured using thin-film thermocouples, and the local heat fluxes were calculated from temperature history records. The motion of the impinging flames was photographed from two directions using a high speed camera, through optical windows attached to the square chamber. It was shown that the local heat flux increases as the fuel injection pressure and the ambient density increase, and is approximately proportional to 0.6-1.0th power of the injection velocity. However, it decreases downstream from the stagnation point. The ratios of the local heat fluxes between the combusting and evaporating sprays estimated using a two-zone model for the characteristic temperature were found to be close to the measured values.