Article,

The Stokes flow from half-space into semi-infinite circular cylinder

, and .
Applied Mathematics and Mechanics, 6 (1): 9--23 (Jan 1, 1985)
DOI: 10.1007/BF01895679

Abstract

The infinite-series solutions for the creeping motion of a viscous incompressible fluid from half-space into semi-infinite circular cylinder are presented. The results show that inside the cylinder beyond a distance equal to 0.5 times the radius of the tube from the pore opening, the deviation of the velocity profile from Poiseuille flow is less than 1\%. The inlet length in this case is comparable to that computed for a finite circular cylinder pore by Dagan et al.1. In the half-space outside the cylinder pore region, the flow is strongly affected by the wall. Beyond one radius of the tube from the orifice, the solutions match almost exactly the flow through an orifice of zero thickness given by Sampson2. The relationship between the pressure drop and the volumetric flow rate is also computed in the present paper for the semi-infinite tube.

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