Pulsating flow and heat transfer of power-law fluid in a circular pipe
Articles
Ayse Nur Altunkaya
Recep Tayyip Erdogan University
https://orcid.org/0000-0003-0643-921X
Orhan Aydin
Karadeniz Technical University
Mete Avci
Recep Tayyip Erdogan University
Published 2022-12-23
https://doi.org/10.15388/namc.2023.28.29734
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Keywords

pulsating flow
pipe
power-law fluid
heat transfer

How to Cite

Altunkaya, A.N., Aydin, O. and Avci, M. (2022) “Pulsating flow and heat transfer of power-law fluid in a circular pipe”, Nonlinear Analysis: Modelling and Control, 28(1), pp. 56–73. doi:10.15388/namc.2023.28.29734.

Abstract

In this study, the pulsating flow of a non-Newtonian fluid and heat transfer in a pipe with uniform heat flux at its wall is examined analytically. The flow is assumed to be both hydrodynamically and thermally fully developed. The perturbation method based on the series expansion is used in the analysis. The periodic change and period-averaged values of the friction factor and Nusselt number as well as velocity and temperature profiles are obtained at varying values of dimensionless frequency and amplitude for shear-thinning, Newtonian and shear-thickening fluids. It is shown that the frequency is effective on the friction factor for a specific range of the dimensionless frequency. For some specific cases, excellent agreements are obtained with the literature. It is disclosed that the dimensionless frequency, the amplitude and the power-law index are interactively effective on the friction and heat transfer.

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