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http://dx.doi.org/10.5916/jkosme.2010.34.5.645

A Study on the Non-evaporating Diesel Spray Characteristics as a Function of Ambient Pressure in Constant Volume Combustion Chamber  

Jeon, Chung-Hwan (부산대학교 기계공학부)
Jeong, Jeong-Hoon (부산대학교 기계공학부 대학원)
Kim, Hyun-Kyu (부산대학교 기계공학부 대학원)
Song, Ju-Hun (부산대학교 기계공학부)
Chang, Young-June (부산대학교 기계공학부)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.34, no.5, 2010 , pp. 645-652 More about this Journal
Abstract
The aim of this investigation was study on the non-evaporation diesel spray characteristics injected through a common-rail diesel injector under various ambient pressure. The diesel spray was investigated with observation of macroscopic characteristics such as spray tip penetration and spray cone angle by the shadowgraph and the image processing method. The numerical study was conducted using a computational fluid dynamics code, AVL-FIRE. The breakup models used were WAVE model and standard $k-{\varepsilon}$ turbulence model was applied. The numerical study used input data which spray cone angle and fuel injection rate was achieved by Zeuch's method. Comparison with experimental result such as spray tip penetration was good agreement. Distribution of droplet diameter were conducted on four planes where the axial distances were 5, 15, 39 and 49mm respectively downstream from the orifice exit.
Keywords
Diesel spray; Spray tip penetration; Injection rate; Droplet diameter distribution; Ambient pressure;
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