Entropy generation optimization in nanofluid flow by variable thicked sheet

T. Hayat, Rabiya Yaqoob, Sumaira Qayyum and A. Alsaedi

Physica A: Statistical Mechanics and its Applications, 2020, vol. 551, issue C

Abstract: Present research deals with optimization of entropy generation analysis of tangent hyperbolic nanomaterial. Mixed convection is nonlinear. Flow by nonlinear stretching sheet of variable thickness is induced. Homogeneous and heterogeneous reactions are considered. Present MHD flow analysis involved Joule heating, nonlinear mixed convection, viscous dissipation and nonlinear thermal radiation. The reduced nonlinear systems are presented in terms of ordinary differential systems. Solutions computations have been carried out by homotopic procedure. The quantities like entropy generation, thermal field, velocity and concentration are examined. Numerical values further interpret the skin friction coefficient and local Nusselt number. Increasing trend of concentration is seen for larger heterogeneous reaction parameter. Entropy number decreases for larger Weissenberg number and power law index while contrast trend is witnessed for Bejan number.

Keywords: Entropy generation; Tangent hyperbolic nanofluid; Sheet of variable thickness; Viscous dissipation; Nonlinear thermal radiation; Joule heating; Nonlinear mixed convection; Homogeneous–heterogeneous reactions (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:551:y:2020:i:c:s0378437119322253

DOI: 10.1016/j.physa.2019.124022

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