Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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An Experimental Study on the Drop Size of a Twin-Fluid Swirl Jet Nozzle

이유체 선회분사 노즐의 액적크기에 관한 실험적 연구

  • 오제하 (전북대학교 대학원 정밀기계공학과) ;
  • 김원태 (전북대학교 대학원 정밀기계공학과) ;
  • 강신재 (전북대학교 우주항공공학과) ;
  • 노병준 (전북대학교 정밀기계공학과)
  • Published : 1996.03.31
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Abstract

This experimental study was to investigate spray angles and drop sizes in an external mixed twin-fluid swirl jet nozzle. Twin-fluid swirl jet nozzle with swirlers designed four swirl angles such as $0^{\circ},\;22.5^{\circ},\;45^{\circ},\;64.2^{\circ}$ was employed. A PDA system was utilized for the measurement of drop size and mean velocity. Water and air were used as the working fluids in this experiment. The mass flow rate of water was fixed as 0.03 kg/min, and air flow rates were controlled to have the air/liquid mass ratio from 1.0 to 6.0. As a result, swirl angle controlled to spray angles and drop sizes. It was found that swirl angle was increased with spray angle and with decreased SMD. However, the effect of swirl angle was reduced at large air/liquid mass ratio(Mr=6.0).

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