5-летний Импакт фактор:
ISSN Печать: 1064-2285
ISSN Онлайн: 2162-6561
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
FREE CONVECTION AND ENTROPY GENERATION IN A CuO/WATER NANOFLUID-FILLED TRIANGULAR CHANNEL WITH SINUSOIDAL WALLS
Faculty of Energy, University of Kashan, Kashan, Iran
School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
Department of Mechanical Engineering, Urmia University of Technology, Urmia, Iran
Faculty of Engineering, Department of Mechanical Engineering, University of Isfahan, Hezar Jerib
Avenue, Isfahan 81746-73441, Iran
Department of Mechanical Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran
Emad Hasani Malekshah
School of Mathematical Sciences, The University of Adelaide, Adelaide, SA 5005, Australia
The fluid flow, heat transfer, and entropy generation due to natural convection phenomenon in a fluid channel are investigated. The configuration of the channel is triangular. Moreover, the bottom and right walls are sinusoidal. The channel contains some circular bodies of constant high and low temperatures which serve as simplified fluid injection pipes. The channel is filled with CuO-water nanofluid; the Brownian motion and its influences on the dynamic viscosity are considered using the Koo-Kleinstreuer-Li (KKL) model. The effect of the shape of nanoparticles on the thermal conductivity is studied using shape factor. The finite volume method is employed to simulate natural convection. The Rayleigh number (103 < Ra < 106), solid volume fraction of nanofluid (φ = 0, 0.01, 0.02, 0.03, and 0.04), and thermal arrangements of internal pipes (Case A, Case B, Case C, and Case D) are considered as governing parameters. Impact of these governing parameters on the streamlines, heat transfer rate, local and total entropy generation and heatlines are studied, comprehensively. Overall, the results show that the heat transfer rate has direct relationship with the Rayleigh number and nanoparticle concentration. On the other hand, the entropy generation has direct and reverse relationship with the Rayleigh number and nanoparticle concentration.
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