TY - JOUR
T1 - Second-moment closure modelling of particle-laden homogeneous turbulent shear flows
AU - Shin, Jong Keun
AU - Seo, Jeong Sik
AU - Han, Seong Ho
AU - Choi, Young Don
PY - 2007/1
Y1 - 2007/1
N2 - 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.
AB - 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.
KW - Second-moment closure
KW - Turbulent shear flow
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U2 - 10.3795/KSME-B.2007.31.1.029
DO - 10.3795/KSME-B.2007.31.1.029
M3 - Article
AN - SCOPUS:34250724309
VL - 31
SP - 29
EP - 39
JO - Transactions of the Korean Society of Mechanical Engineers, B
JF - Transactions of the Korean Society of Mechanical Engineers, B
SN - 1226-4881
IS - 1
ER -