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

  • 제27권6호
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  • Pages.813-820
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  • 2003
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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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고체입자가 부상된 이상유동에서 운반유체의 난류강도에 대한 해석적 접근

A Theoretical Approach on the Turbulence Intensity of the Carrier Fluid in Two-phase Particle-laden Flows

  • 김세윤 (충북대학교 대학원 기계공학과) ;
  • 이충구 (충북대학교 기계공학부) ;
  • 이계복 (충북대학교 기계공학부)
  • 발행 : 2003.06.01
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초록

The purpose of this research is to develop the model of turbulence modulation due to the presence of particles in various types of particle-laden flows Available experimental data are surveyed and the dependence of turbulence modulation of carrier-phase on particle size, concentration and. particle Reynolds number are examined. This study takes into account the effect of wake produced by particle, the drag between phases and the velocity gradient in the wake to estimate the production of turbulence. The model of turbulence modulation using the mixing length theory under the assumption of equilibrium flow is proposed. Numerical results show that the model is successful in predicting the characteristics of the particle-laden in various flow conditions both qualitatively and quantitatively.

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참고문헌

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