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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 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.2018025786
pages 361-380

THE EFFECT OF MAGNETIC FIELD ON COUNTERFLOWS OF NANOFLUIDS IN ADJACENT MICROCHANNELS SEPARATED BY A THIN PLATE

Y. Yalameh Ali Abadi
Mechanical Engineering, Shahrekord University, Shahrekord, Iran
Afrasiab Raisi
Engineering Faculty, Shahrekord University, Shahrekord, PO Box 115, Iran
Behzad Ghasemi
Engineering Faculty, Shahrekord University, Shahrekord, PO Box 115, Iran

Краткое описание

This study examines forced convection heat transfer between two hot and cold nanofluid laminar counterflows in a pair of adjacent horizontal microchannels. The hot alumina-water nanofluid enters the upper microchannel from the left and at same time, the cold CuO-water nanofluid enters the lower microchannel from the right. Heat exchange takes place between the hot and cold flows along the microchannels through the intermediate plate. The governing equations became algebraic using control volume method, and they are simultaneously solved using the SIMPLE algorithm. The results show that an increase in Reynolds number results in a rise in the heat transfer rate between the two flows in the microchannels. The Lorentz force generated by the magnetic field reduces the velocity of the flows in the core of the microchannels. Due to the constant mass flow rate, a velocity decrease at the center of the microchannels results in an increase in the velocity near the walls. Therefore, the heat exchange rate between the hot and cold flows is enhanced with increasing Hartmann number, especially at high Reynolds numbers. Also, due to the better thermal conductivity of nanofluids, an increase in the volume fraction of the nanoparticles leads to an increase in the heat transfer rate.


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