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Heat Transfer Research
Импакт фактор: 0.404 5-летний Импакт фактор: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561

Выпуски:
Том 50, 2019 Том 49, 2018 Том 48, 2017 Том 47, 2016 Том 46, 2015 Том 45, 2014 Том 44, 2013 Том 43, 2012 Том 42, 2011 Том 41, 2010 Том 40, 2009 Том 39, 2008 Том 38, 2007 Том 37, 2006 Том 36, 2005 Том 35, 2004 Том 34, 2003 Том 33, 2002 Том 32, 2001 Том 31, 2000 Том 30, 1999 Том 29, 1998 Том 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018018305
pages 529-553

HOMOTOPY STUDY OF ENTROPY GENERATION IN MAGNETIZED MICROPOLAR FLOW IN A VERTICAL PARALLEL PLATE CHANNEL WITH BUOYANCY EFFECT

Srinivas Jangili
Department of Mathematics, National Institute of Technology Meghalaya, Shillong, 793003, India
O. Anwar Bég
Fluid Mechanics, Nanosystems and Propulsion, Aeronautical and Mechanical Engineering, School of Computing, Science and Engineering, Newton Building, University of Salford, Manchester M54WT, United Kingdom

Краткое описание

The paper presents the results of an analytical investigation into the buoyancy force effects on the entropy generation in magnetohydrodynamic non-Newtonian flow due to constant pressure gradient in a vertical parallel plate channel. The length of the channel plates is assumed to be infinite and uniform, and they are held at different temperatures. The Eringen thermomicropolar material model is used to simulate the rheological flow in the channel. The resulting governing equations are then solved under physically viable boundary conditions at the channel walls, using the Homotopy Analysis Method (HAM). The variations of emerging non-Newtonian and thermophysical parameters, i.e., couple stress parameter (between 1 and 10), Eringen micropolar parameter (0 ≤ c < 1), Reynolds number (between 1 and 5), Grashof number (between 0.1 and 5), Hartmann number (between 0.5 and 2), Brinkman number (between 0.1 and 0.5), and viscous dissipation parameter (between 0 and 1) are considered. The prescribed ranges of the parameters are physically representative of the real non-Newtonian magnetohydrodynamic thermal systems employing micropolar fluids. The computations show that an increasing magnetic field effect reduces the entropy production at the channel walls, whereas the converse behavior is observed for the increasing couple stress parameter, Reynolds number, Grashof number, and the viscous dissipation parameter. The increasing micropolarity parameter and Hartmann number effectively decrease the entropy generation production.


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