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  • 标题:Scrutiny of entropy optimized tangent hyperbolic fluid (non-Newtonian) through perturbation and numerical methods between heated plates
  • 本地全文:下载
  • 作者:M Ijaz Khan ; Mubbashar Nazeer ; Nasir Shehzad
  • 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
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