Journal
JOURNAL OF NANOFLUIDS
Volume 8, Issue 1, Pages 103-116Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jon.2019.1570
Keywords
Buongiornio Model; Casson Fluid; Unsteady Stretching Sheet; Entropy Generation
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The present article examines the entropy generation effects in hydromagnetic flow of non-Newtonian nanofluid over a permeable unsteady stretching surface. The Buongiornio model and Casson fluid model are used to characterize the non-Newtonian behaviour of the fluid. The time dependent partial differential equations that represent the considered problem are converted into a set of non-linear differential equations by suitable similarity transformations. The transformed equations are solved analytically with the help of Homotopy Analysis Method (HAM) and numerically employing shooting technique with fourth-fifth order Runge-Kutta method. The influence of pertinent parameters on velocity, temperature and concentration profiles, local skin friction coefficient and Nusselt number are discussed in detail through graphs and tables. Furthermore, the impact of these parameters on local entropy generation and averaged entropy generation number are analysed qualitatively.
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