  This paper considers membranes of globular structure in the framework of the
cell model technique. Coupled micropolar and Brinkman-type equations are used
to model the flow of micropolar fluid through a spherical cell, consisting of
solid core, porous layer and liquid envelope. The solution is obtained in
analytical form. Boundary value problems with different conditions on
hypothetical cell surface are considered and compared. The hydrodynamic
permeability of a membrane is investigated as a function of micropolar and
porous medium characteristics.
