대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제25권6호
  • /
  • Pages.811-818
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  • 2001
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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안정성 이론을 이용한 고압 분사 액체 제트의 미립화 모델에 관한 연구

A Study on an Atomization Model of a High-Pressurized Liquid Jet with a Stability Theory

  • 발행 : 2001.06.01
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초록

The wave characteristics for a non-reacting high-speed liquid jet were investigated using a linear stability theory. In this study, 2-D incompressible viscid momentum equation for a liquid jet was considered, and the effects of injection parameters, such as Weber number, Reynolds number, and density ratio, on the wave characteristics were investigated. With the wavelength obtained from the stability analysis, the atomization model was suggested. The droplet sizes after breakup were determined by the wavelengths of fast growing waves, and the mass of the shed droplets was determined by the breakup time derived by ORouke et al. It was found that in comparison with measurements of diesel fuel spray, the results of calculation had a similar trend of the decrease of overall SMD with the increase of Reynolds number.

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참고문헌

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