Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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Numerical Study on the Effect of Anisotropic Turbulence Characteristics on the Droplet Behaviors for Impinging Sprays

충돌분무의 액적 거동에 미치는 비등방성 난류특성의 영향에 대한 수치해석 연구

  • 고권현 (중앙대학교 대학원 기계공학부) ;
  • 유홍선 (중앙대학교 기계공학부)
  • Published : 2003.12.01
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Abstract

It is an aim of this study to perform extensive numerical study for analyzing the anisotropic turbulence effects on spatial and temporal behaviors of droplet for impinging sprays. The turbulence model of Durbin is used for comparisons with the k-ε model. The turbulence-induced dispersions of droplets are considered to describe the anisotropy of turbulence effectively and spray/wall interactions are simulated using the model of Lee and Ryou. Present study investigates the overall and the internal structures of impinging diesel sprays such as spray shapes, radius and height of wall sprays, Sauter mean diameter (SMD), local droplet velocity, and local gas velocity and compared the results with experimental data by two adopted turbulence models. When the anisotropy effect of turbulence is included, better predictions for both gas and droplet tangential velocities are obtained, compared to the k-ε model. It is concluded that anisotropic effect of turbulence should be considered for simulating impinging diesel sprays.

Keywords

References

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