Second-moment closure modelling of particle-laden homogeneous turbulent shear flows

Jong Keun Shin, Jeong Sik Seo, Seong Ho Han, Young Don Choi

Research output: Contribution to journalArticlepeer-review

Abstract

A second-moment closure is applied to the prediction of a homogeneous turbulent shear flow laden with mono-size particles. The closure is carried 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.

Original languageEnglish
Pages (from-to)29-39
Number of pages11
JournalTransactions of the Korean Society of Mechanical Engineers, B
Volume31
Issue number1
DOIs
Publication statusPublished - 2007 Jan

Keywords

  • Second-moment closure
  • Turbulent shear flow

ASJC Scopus subject areas

  • Mechanical Engineering

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