Compressible Dusty-Gas Boundary-Layer Flow Over a Flat Surface

[+] Author and Article Information
Ali J. Chamkha

Department of Mechanical and Industrial Engineering, P.O. Box 5969, Kuwait University, Safat, 13060, Kuwait

J. Fluids Eng 118(1), 179-185 (Mar 01, 1996) (7 pages) doi:10.1115/1.2817498 History: Received August 26, 1994; Revised August 24, 1995; Online December 04, 2007


Equations governing compressible boundary-layer laminar flow of a two-phase particulate suspension are developed based on a continuum representation of both phases. These equations include such effects as particle-phase viscous stresses, variable position-dependent particle slip coefficient, and general power-law viscosity-temperature and thermal conductivity-temperature relations. The dimensionless form of the equations are applied to the problem of flow over a semi-infinite flat surface. An appropriate transformation is employed to allow proper comparison with previously published results for special cases of this problem. The full coupled system of equations is solved numerically via an implicit finite-difference method. Graphical results for the density, and temperature profiles as well as the displacement thicknesses, skin-friction coefficients, and the wall heat transfer coefficient for both the fluid and particle phases are presented and discussed in detail. In addition, a parametric study is performed to illustrate the influence of the particle to fluid viscosity ratio and the viscosity-temperature power exponent on the flow properties.

Copyright © 1996 by The American Society of Mechanical Engineers
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