RT Journal Article ID 21da06ac171ab022 A1 Deo, Satya A1 GUPTA, BALI RAM T1 DRAG ON A POROUS SPHERE EMBEDDED IN ANOTHER POROUS MEDIUM JF Journal of Porous Media JO JPM YR 2010 FD 2010-11-24 VO 13 IS 11 SP 1009 OP 1016 K1 Gegenbauer functions K1 Brinkman equations K1 modified Bessel functions K1 stress tensor AB This article concerns the solution of the problem of an incompressible viscous fluid flow past a porous sphere embedded in another porous medium. The Brinkman equations for the flow inside and outside the porous sphere in their stream function formulations are used. Explicit expressions of the stream functions and shear stresses for inside and outside flow fields are obtained. The drag force experienced by a porous sphere embedded in another porous medium is also evaluated. The dependence of the drag coefficient and the shearing stress on permeability for a porous sphere is presented graphically and analytically. Special well-known results are then deduced from the analysis. PB Begell House LK https://www.dl.begellhouse.com/journals/49dcde6d4c0809db,6daf5fd1272f643c,21da06ac171ab022.html