Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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BEHAVIOR OF MICROBUBBLES IN ISOTROPIC TURBULENCE

등방성 난류에서의 마이크로버블 거동

  • Shim, G.H. (Dept. of Mechanical Engineering, Yonsei Univ.) ;
  • Lee, S.G. (Dept. of Mechanical Engineering, Yonsei Univ.) ;
  • Lee, C. (Dept. of Mechanical Engineering, Yonsei Univ.)
  • 심기훈 (연세대학교 기계공학과) ;
  • 이슬기 (연세대학교 기계공학과) ;
  • 이창훈 (연세대학교 기계공학과)
  • Received : 2016.11.03
  • Accepted : 2016.11.30
  • Published : 2016.12.31
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Abstract

Direct numerical simulation is conducted to observe the behavior of microbubbles in isotropic turbulence. Navier-Stokes equation and the motion of equation for microbubbles are solved with periodic boundary condition in a cube domain. Vorticity contour, enstrophy ratio, relative reduction of bubble rise velocity, and the closest distance of particles are investigated for various Stokes numbers and gravity factors to understand clustering of microbubbles. Also, clustering due to the effect of the lift force is investigated.

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References

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