Journal of ILASS-Korea (한국분무공학회지)

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

Measurements of Droplet Sizes and Velocities with Optimum Probability Density Function in a Transient Liquefied Butane Spray

액상부탄 간헐분무의 액적 크기 및 속도 측정과 최적 확률분포 연구

  • 김종현 (한국항공대학교) ;
  • 김재욱 (두원공과대학 동력기계과) ;
  • 구자예 (한국항공대학교 항공기계공학과)
  • Published : 2000.03.31
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Abstract

The characteristics of liquefied butane spray are expected to be different from conventional diesel fuel spray, because a kind of flash boiling spray is expected when the back pressure is below the saturated vapor pressure of the butane(0.23MPa at 298K). The ambient pressure was held at a pressure above(0.37MPa) and below(0.15MPa) the fuel vapor pressure. The axial velocities, radial velocities, and size distributions in butane sprays were measured with PDPA(Phase Doppler Particle Analyzer) system. The PDPA measurement showed a smaller SMD at the 0.15MPa chamber pressure, compared to the 0.37MPa case. Log-hyperbolic density function for the droplets size distribution can be fitted to the experimental results of a liquefied butane spray.

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