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Author(s): A. Baptista
M. A. Alves
P. M. Coelho
Title: Heat Transfer in Fully Developed Laminar Flow of Power Law Fluids
Issue Date: 2014
Abstract: In this work, we present approximate and exact solutions for the temperature profile andNusselt number under fully developed laminar flow of a power law fluid inside pipes andbetween parallel plates. Constant wall temperature and negligible axial heat conductionare considered, for both the cases with and without viscous dissipation. For completeness, the corresponding solutions for the related problem of constant heat flux at the wallare also presented. In the absence of viscous dissipation, the solutions obtained are semianalytic, since they rely upon an iterative procedure. As a benchmark result, to allowcomparison with the results obtained with the semi-analytical expressions, we also present highly accurate numerical solutions for the Nusselt number, Nu, based on numericalintegration of the energy equation. Also based on these numerical results, simplified correlations for Nu are proposed, valid for a wide range of the power law index.
Subject: Ciências da engenharia e tecnologias
Engineering and technology
Scientific areas: Ciências da engenharia e tecnologias
Engineering and technology
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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