Summary
The problem of laminar flow through a porous annulus with constant velocity of suction at the walls and with swirl is reduced to the solution of four non-linear differential equations. The significance of each of these equations is discussed. By taking the swirl to be zero series solutions are obtained for (i) small suction or blowing (ii) when the total flow into the channel through the walls is small. Finally the asymptotic behaviour of the flow for large suction or blowing is discussed.
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Terrill, R.M. Flow through a porous annulus. Appl. Sci. Res. 17, 204–222 (1967). https://doi.org/10.1007/BF00386091
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DOI: https://doi.org/10.1007/BF00386091