Heat transfer rate of power law fluid flow with variable thermal conductivity through a porous annular sector duct
School of Natural Sciences, National University of Sciences and Technology, Islamabad, Pakistan
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Accepted: 27 May 2019
Published online: 9 September 2019
The impact of power law velocity gradients dependent thermal conductivity on forced convective flow of power law fluid through an annular sector duct has been studied in this article. The Darcy Brinkman Forchheimer model is taken into account to describe the flow field. Governing non-linear momentum and energy equations have been transformed into a dimensionless form with the help of dimensionless parameters. By using dimensionless quantities such as friction factor, fRe and average Nusselt number, Nu , characteristics of forced convective flow of power law fluid are analyzed for different values of power law index, n.
© Società Italiana di Fisica / Springer-Verlag GmbH Germany, part of Springer Nature, 2019