Perturbation solutions of weakly compressible Newtonian Poiseuille flows with Navier slip at the wall |
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Authors: | Stella Poyiadji Georgios C Georgiou Katerina Kaouri Kostas D Housiadas |
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Institution: | 1. Department of Mathematics and Statistics, University of Cyprus, P.O. Box 20537, 1678, Nicosia, Cyprus 2. Department of Computer Science, Intercollege Limassol, Ag. Fylaxeos 92, 3507, Limassol, Cyprus 3. Department of Mathematics, University of the Aegean, Karlovassi, Samos, 83200, Greece
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Abstract: | We consider both the planar and axisymmetric steady, laminar Poiseuille flows of a weakly compressible Newtonian fluid assuming that slip occurs along the wall following Navier’s slip equation and that the density obeys a linear equation of state. A perturbation analysis is performed in terms of the primary flow variables using the dimensionless isothermal compressibility as the perturbation parameter. Solutions up to the second order are derived and compared with available analytical results. The combined effects of slip, compressibility, and inertia are discussed with emphasis on the required pressure drop and the average Darcy friction factor. |
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