Atomization and Sprays Journal of the International Institutes for Liquid Atomization and Spray Systems

ISSN for PRINT: 1045-5110

For Online Access

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1994, Volume4

Issue 2

128 pages

Issue price - $75.00

Huang Zhen
Shanghai Jiao Tong University

Shao Yiming
Department of Mechanical Engineering, Chongqing Institute of Communications, Chongqing, P.R. China

Seiichi Shiga
Department of Mechanical Engineering, Faculty of Engineering, Gunma University, Gunma, Japan

Hisao Nakamura
Department of Mechanical Engineering, Faculty of Engineering, Gunma University, Gunma, Japan

Takao Karasawa
Department of Mechanical Engineering, Faculty of Engineering, Gunma University, Gunma, Japan

In order to gain additional insight into the controlling mechanism of atomization of the injection of fuel containing dissolved gas (IFCDG), an experimental study was carried out to investigate the orifice flow pattern, pressure characteristics, and their effects on the atomization behavior of the IFCDG, using scaled-up model nozzles and metal nozzles. The results show that (1) the flow inside the orifice usually exhibits two characteristic patterns, which have big differences in the pressure characteristics; (2) in the IFCDG, the difference of the pressure characteristics caused by the variation of the nozzle L/D ratio has a dominant influence on the separation of the dissolved gas from the fuel inside the orifice and is verified to account for a dramatic change in the spray pattern.

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