TED-AJ03-355 UNSTEADY CONVECTION-RADIATION FLOW OF A MICROPOLAR FLUID OVER A VERTICAL PLATE

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概要

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• In the present work we consider the case of mixed convection flow of a micropolar fluid over a semi-infinite, vertical porous plate with constant suction velocity normal to the plate in the presence of thermal radiation field. In recent years, the dynamics of micropolar fluids, originated from the theory of Eringen [5], has been a popular area of research. As the fluids consist of randomly oriented molecules, and as each volume element of the fluid has translation as well as rotation, the analysis of physical problems in these fluids has revealed several interesting phenomena, which are not found in Newtonian fluid. The micropolar fluid considered here is a gray, absorbing-emitting but non-scattering optically thick medium. The Rosseland approximation is used to describe the radiative heat flux in the energy equation. It is assumed here that the size of holes in the porous plate is much larger than a characteristic microscopic length scale of the micropolar fluid to simplify formulation of the boundary condition. The effects of formulation of the boundary conditions. The effects of various flow parameters and thermophysical properties on the flow and temperature fields across the boundary layer are investigated. Especially, we consider the influence of the boundary conditions to be satisfied by the microrotation vector on the hydrodynamic quantities characterizing the convection-radiation flow fields, including the variation of skin friction and couple stress on the porous plate.[figure]

• 一般社団法人日本機械学会の論文

著者

• Kim Youn

  School Of Biological Sciences Seoul National University

• Kim Youn

  School Of Mechanical Engineering Sungkyunkwan University

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• TED-AJ03-355 UNSTEADY CONVECTION-RADIATION FLOW OF A MICROPOLAR FLUID OVER A VERTICAL PLATE

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