文章基本信息

标题：Scrutiny of entropy optimized tangent hyperbolic fluid (non-Newtonian) through perturbation and numerical methods between heated plates
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作者：M Ijaz Khan ; Mubbashar Nazeer ; Nasir Shehzad 等
期刊名称：Advances in Mechanical Engineering
印刷版ISSN：1687-8140
电子版ISSN：1687-8140
出版年度：2020
卷号：12
期号：12
页码：1-12
DOI：10.1177/1687814020970772
语种：English
出版社：Sage Publications Ltd.
摘要：Objective: Many methods have been used to maximize the capacity of heat transport. A constant pressure gradient orthe motion of the wall can be used to increase the heat transfer rate and minimize entropy. The main goal of ourinvestigation is to develop a mathematical model of a non-Newtonian fluid bounded within a parallel geometry.Minimization of entropy generation within the system also forms part of our objective.Method: Perturbation theory is applied to the nonlinear complex system of equations to obtain a series solution. Theregular perturbation method is used to obtain analytical solutions to the resulting dimensionless nonlinear ordinarydifferential equations. A numerical scheme (the shooting method) is also used to validate the series solution obtained.Results: The flow and temperature of the fluid are accelerated as functions of the non-Newtonian parameter (via thepower-law index). The pressure gradient parameter escalates the heat and volume flux fields. The energy loss due toentropy increases via the viscous heating parameter. A diminishing characteristic is predicted for the wall shear stressthat occurs at the bottom plate versus the time-constant parameter. The Reynolds number suppresses the volume fluxfield.
关键词：Plane Poiseuille flow; tangent hyperbolic fluid; entropy generation; perturbation method; heat transfer rate; skin friction coefficient