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Calculation of the internal flow in a fuel nozzle
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 Title & Authors
Calculation of the internal flow in a fuel nozzle
Gu, Ja-Ye; Park, Jang-Hyeok; O, Du-Seok; Jeong, Hong-Cheol;
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 Abstract
The breakup of liquid jet is the result of competing, unstable hydrodynamic forces acting on the liquid jet as it exit the nozzle. The nozzle geometry and up-stream injection conditions affect the characteristics of flow inside the nozzle, such as turbulence and cavitation bubbles. A set of calculation of the internal flow in a single hole type nozzle were performed using a two dimensional flow simulation under different nozzle geometry and up-stream flow conditions. The calculation showed that the turbulent intensity and discharge coefficient are related to needle position. The diesel nozzle with sharp inlet under actual engine condition has possibility of cavitation, but round inlet nozzle has no possibility of cavitation.
 Keywords
Internal Flow In Nozzle;Turbulent Intensity;Cavitation;
 Language
Korean
 Cited by
1.
디젤기관용 분사밸브 형상에 따른 분사특성,김성윤;오승우;박권하;

한국마린엔지니어링학회지, 2003. vol.27. 6, pp.745-752
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