Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
권호 표지

A Numerical Study on the Characteristics of Cavitation and Internal Flow According to Nozzle Length-to-Diameter Ratio

노즐 형상비에 따른 캐비테이션 및 내부 유동 특성에 관한 수치적 연구

  • 한동식 (부산대학교 기계공학과 대학원) ;
  • 김현규 (부산대학교 기계공학과 대학원) ;
  • 장영준 (부산대학교 기계공학부, PC3) ;
  • 전충환 (부산대학교 기계공학부, PC3, RIMT)
  • Published : 2008.12.31
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Abstract

Spray formation mechanism was controlled by a cavitation inside an injection nozzle. Nozzle geometry affects spray characteristics and formation behavior, which could determine engine performance and pollutant formation. A study was carried out on the influence of aspect ratio on cavitation inside a nozzle. The cavitation model available in Star-CD code was used to obtain cavitation behavior inside nozzle, which was compared with previous experimental results. In this paper, a CFD approach combining multiphase Volume-of-Fluid(VOF) and k-model was applied. The numerical results are similar with the experimental results.

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