Proceedings of the Korean Society of Propulsion Engineers Conference (한국추진공학회:학술대회논문집)
- 2009.05a
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- Pages.267-274
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- 2009
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- 1975-342X(pISSN)
The Advancement of Breakup and Spray Formation by the Swirl Spray Jets in the Low Speed Convective Flow
전단 유동에 의한 스월 제트의 미립화 및 분무특성 향상
Abstract
Breakup and spray formation of pressure-swirl liquid jets injected into a low-speed convective-flow are experimentally investigated. Effects of the cross-flows on the macroscopic and microscopic spray parameters are optically measured in terms of jet Weber number and liquid-to-gas momentum ratio. The liquid stream undergoes Rayleigh jet breakup at lower jet Weber numbers and a liquid sheet isn't formed because of the weak radial velocity in the swirl jet. At higher jet Weber numbers, the macroscopic spray parameter is a very weak function of the momentum ratio but the effect of the convection on the microscopic spray parameter is significant through the secondary breakup with increasing in the liquid-to-gas momentum ratio. The convective-flow promotes bag/plume breakup and the spray formation, and its effect is more distinct at higher momentum ratio.
아음속 영역의 대류에 평행하게 압력형 스월 제트를 분사시켜 액막 분열 및 액적 크기와 분포를 실험적으로 측정하였다. 대류로 인한 거시적과 미시적인 분무 특성의 영향을 제트