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Micropolar couple stress thermofluidics and entropy in Forchheimer channel
Author(s) -
Vyas Paresh,
Khan Sahanawaz
Publication year - 2021
Publication title -
heat transfer
Language(s) - English
Resource type - Journals
eISSN - 2688-4542
pISSN - 2688-4534
DOI - 10.1002/htj.22080
Subject(s) - bejan number , cartesian coordinate system , mechanics , entropy (arrow of time) , nonlinear system , heat flux , mathematics , mathematical analysis , physics , heat transfer , geometry , thermodynamics , quantum mechanics , reynolds number , turbulence , nusselt number
This paper presents an analysis of the entropy generated in thermofluidic configuration involving micropolar couple stress fluid flow inside a Forchheimer channel. The channel is composed of a porous medium trapped between two parallel permeable plates separated by distance H through which the fluid can be sucked out/injected in. One of the plate bears a constant temperature and other is subjected to a uniform heat flux. A Cartesian coordinate system is chosen to model the flow configuration. The nondimensional nonlinear governing equations are solved by the differential transform method and Runge–Kutta–Fehlberg method to ascertain the accuracy of the results. Both the methods do match to the order of 10 −6 for the quantities velocity, microrotation, and temperature. These quantities and their gradients are required to the compute entropy generation number. The effects of the parameters on entropy generation and Bejan number are discussed through various plots.