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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 51, 2020 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.2018020222
pages 1645-1665

MIXED CONVECTION AND ENTROPY GENERATION IN A LID-DRIVEN CAVITY FILLED WITH A HYBRID NANOFLUID AND HEATED BY A TRIANGULAR SOLID

Muneer A. Ismael
Mechanical Engineering Department, Engineering College, University of Basrah, Basrah 61004, Iraq
T. Armaghani
Department of Engineering, Mahdishahr Branch, Islamic Azad University, Mahdishahr, Iran
Ali J. Chamkha
Department of Mechanical Engineering, Prince Sultan Endowment for Energy and Environment, Prince Mohammad Bin Fahd University, Al-Khobar 31952, Kingdom of Saudi Arabia; RAK Research and Innovation Center, American University of Ras Al Khaimah, United Arab Emirates, 10021

Краткое описание

The use of a hybrid nanofluid is a new strategy of heat transfer enhancement. It is composed of more than one type of nanoparticles suspended in a base fluid. The present study investigates the mixed convection and entropy generation of a Cu-Al2O3-water hybrid nanofluid inside a lid-driven cavity heated by a triangular solid and cooled isothermally from the right vertical wall. The top wall moves in aiding or opposing directions. The studied pertinent parameters are: the thermal conductivity ratio of the triangular solid wall to the base fluid (Kr = 0.44, 1, 23.8), the Richardson number (Ri = 0.01, 1, 10), and the volume fraction of the hybrid and familiar nanofluids (φ, φCu, φAl2O3 = 0.0-5%). The Prandtl number is fixed at 6.26, and the thickness of the solid wall, at 0.5. A uniform up-wind scheme finite difference method is used for numerical solution. The results have shown that the hybrid nanofluid strategy promises in improvement of the economic aspect by reducing the quantity of high thermal conductivity nanoparticles, which usually are more expensive.


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