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The effects of viscous dissipation on laminar heat transfer to power law Ruids in tubes

Research paper by P. Gryglaszewski, Z. Nowak, J. Stacharska-Targosz

Indexed on: 01 Jun '80Published on: 01 Jun '80Published in: Heat and Mass Transfer



Abstract

This work is concerned with laminar heat transfer in circular tubes to power law fluids with temperature-dependent rheological properties. Basic equations governing the problem under consideration are derived including effects of viscous dissipation but neglecting internal heat generation. The derived equations are solved numerically by means of finite-difference scheme and for the boundary conditions of constant wall temperature. The results are presented in form of graphs and compared to the computations carried out by other authors. A very good agreement is stated. The present work is intended to be an extension of the paper which has been recently published by Krishnan and Sastri [5].