Analytical solutions for pipe flow of a fourth grade fluid with Reynold and Vogel's models of viscosities
作者： S. Nadeem , M. Ali
DOI: 10.1016/J.CNSNS.2008.05.013
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摘要: Abstract In this paper, the steady incompressible flow of a fourth grade fluid down vertical cylinder with variable viscosity and heat transfer analysis are considered. The governing equations motion in cylindrical coordinates have been derived. complete analytic solutions momentum energy obtained by homotopy method (HAM). entropy generation number for two cases viscosities namely (i) Reynold’s model (ii) Vogel’s also computed. results compared available finite difference perturbation third fluid. At end pressure gradient has calculated.
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