한국분무공학회지 (Journal of ILASS-Korea)
- 제3권4호
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- Pages.65-76
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- 1998
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- 1226-2277(pISSN)
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- 2288-9051(eISSN)
2유체 분무 액적의 거동에 관한 실험 및 수치 해석적 연구
Experimental and Numerical Study on the Air-assist Atomizer Spray Droplets
초록
An experimental and numerical study of a spray flow is performed to investigate the spray characteristics using an air-assisted atomizer. A Partical Dynamic Analyzer(PDA) is used to measure SMD, dmp velocity, and drop number density whose the initial conditions have considerable effect on the numerical results. The measured experimental data have been used to asses the accuracy of model predictions. Numerical investigation is made with the Eulerian - Lagrangian formulism. Turbulent dispersion effects using a Monte-Carlo method, turbulent modulation effect and entrainment of air are also numerically simulated. Results show that the numerical predictions of SSF(Stochastic Separated Flow) analysis yielded reasonable agreement with the experimental data. However, the model calculations for small drops produced the inconsistent numerical results due to the effect of surrounding air entrainment.
키워드