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INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE, vol.30, no.2, pp.141-151, 1992 (Journal Indexed in SCI)
A mixture of two incompressible Newtonian fluids is considered and the flow induced by steady longitudinal vibration of a pipe on Poiseuille flow in a uniform circular pipe under a constant pressure gradient, is then investigated. Explicit results are obtained in the limiting cases in which a suitable non-dimensionalized frequency is very small or very large.