액체의 물성치와 노즐의 형상 변화에 따른 압력스월 노즐의 분무 특성

Choe, Yun-Cheol;Jeong, Ji-Won;Kim, Deok-Jul

  • 발행 : 2001.12.01


The purpose of this study was to investigate the significant characteristics in atomization process of industrial etching spray fur the design or Precise pressure-swirl nozzles. The experiment was carried out with different viscosities and densities of the liquid. The macro characteristics of liquid spray, such as the spray angle and breakup process were captured by PMAS and the micro characteristics of liquid spray. such as droplet size and velocity measurements were obtained by PDA. The droplet axial and radial velocity and SMD were measured along axial and radial direction. The RMS of two velocities was measured along radial direction. It was found that the fluid with higher kinematic viscosity resulted in the larger SMD and the lower mean droplet velocity. And we could divide breakup processes into three regions that is atomization, non-dilution and dilution one in spray of pressure-swirl nozzle. The radial as well as axial velocity of droplet played an important role in the atomization process of higher kinematic viscosity fluid.


액체미립화;PDA 위상 도플러 입자 분석기;압력식 와류형 노즐;Sauter 평균입경;분열과정;PMAS 입자 운동 분석기


  1. 송시홍, 이상용, 1994, 'Y-Jet노즐을 통한 저점도 액체의 유량 및 입경예측에 관한 연구,' 대한기계학회눈문집(B), 제12호, pp. 3377-3385
  2. 이상용, 김인구, 조한권, 1989, '와류 분무 노즐에 의해 형성되는 액적들의 균일도에 액체의 점도가 미치는 영향,' 대한기계학회눈문집(B), 제3호, , pp. 538-546
  3. Tasi, S.C. and Viers, B., 1992, 'Airblast Atomization of Viscous Newtonian Liquids using Twin-fluid Jet Atomizers of Various Designs,' Trans, ASME Journal, Fluids Engineering, Vol, 114, pp. 113-118
  4. 정지원, 차건종, 김덕줄, 2000, '이중분무의 중첩영역과 단일분무에서 액적의 거동 특성,' 대한기계학회논문집(B), 제24권, 제10호, pp. 1300-1380
  5. Bates, C. J and Jolly, A. J' 1997, 'Phase Dopper Measurement on a Pressurised Spray Nozzle Using Scattering Angles of $72^{\circ}\;and\;150^{\circ}$,' IC'LASS-97, pp. 910-917
  6. 최동석, 김덕줄, 고장권, 1998, '와류형 고압인 젝터의 초기분무의 분열과도 현상,' 대한기계학회논문집(B), 제22권, 제8호, pp. 1132-1140
  7. (3) Evers, L. W., 1994, 'Characteristics of the Transient Spray from a High Pressure Swirl Injector,' SAE Paper, No. 940188
  8. Zhao, F., Yoo, J., Liu, Y. and Lai, M., 1997, 'Characteristics of Gasoline Direct Injection Spray,' ILASS-America., pp. 514-521
  9. Zhao, F., Yoo, J., Liu, Y. and Lai, M., 1996, 'Spray Dynamics of High Pressure Fuel Injectors for DI Gasoline Engines,' SAE Paper, No. 961925
  10. Dombrowski, N. and Hasson, D., 1969, 'The Flow Characteristics of Swirl Spray Pressure Nozzles with Viscosity Liquid,' AIChE Journal, pp. 604 - 611