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

The Korean Society of Mechanical Engineers (대한기계학회)
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Second-Moment Closure Modelling of Particle-Laden Homogeneous Turbulent Shear Flows

고체입자가 부상된 균질 난류 전단유동의 2차-모멘트 모형화

  • 신종근 (한중대학교 자동차공학과) ;
  • 서정식 (고려대학교 대학원 기계공학과) ;
  • 한성호 (고려대학교 대학원 기계공학과) ;
  • 최영돈 (고려대학교 기계공학과)
  • Published : 2007.01.01
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Abstract

A second-moment closure is applied to the prediction of a homogeneous turbulent shear flow laden with mono-size particles. The closure is curried out based on a 'two-fluid' methodology in which both carrier and dispersed phases are considered in the Eulerian frame. To reduce the number of coupled differential equations to be solved, Reynolds stress transport equations and algebraic stress models are judiciously combined to obtain the Reynolds stress of carrier and dispersed phases in the mean momentum equation. That is, the Reynolds stress components for carrier and dispersed phases are solved by modelled transport equations, but the fluid-particle velocity covariance tensors are treated by the algebraic models. The present predictions for all the components of Reynolds stresses are compared to the DNS data. Reasonable agreements are observed in all the components, and the effects of the coupling of carrier and dispersed phases are properly captured in every aspects.

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References

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