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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
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.2018019422
pages 457-481

BUOYANCY-DRIVEN CAVITY FLOW OF A MICROPOLAR FLUID WITH VARIABLY HEATED BOTTOM WALL

Nasir Ali
Department of Mathematics and Statistics, International Islamic University, Islamabad 44000, Pakistan
Mubbashar Nazeer
Department of Mathematics and Statistics, International Islamic University, Islamabad 44000, Pakistan
Tariq Javed
Department of Mathematics and Statistics, International Islamic University, Islamabad 44000, Pakistan
M. A. Siddiqui
Department of Mathematics and Statistics, International Islamic University, Islamabad 44000, Pakistan

Краткое описание

This article explores the buoyancy-driven flow of a micropolar fluid in a square conduit. The flow is assumed to be steady, incompressible, and fully developed. The coupling between the energy and momentum equations is achieved using the Boussinesq approximation. A finite element scheme based on penalty formulation is implemented to simulate the governing equations. The simulations are carried out for both cases of constant and variable heating of the bottom wall. The contours of the temperature field and stream function are plotted for several values of involved physical parameters, namely, the Rayleigh number, Prandtl number, and micropolar parameters. The effects of these pertinent parameters on the average and local Nusselt numbers are also quantified. The study shows that the strength of recirculating zones decreases with increase in the micropolar parameter. Moreover, the expansion of isotherms toward the top boundary surface of an enclosure is noted for greater values of the micropolar parameter. The local and average Nusselt numbers decrease with change in the behavior of the fluid from Newtonian to micropolar.


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