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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.2015007542
pages 795-818

NUMERICAL STUDY OF THE HYDROTHERMAL BEHAVIOR AND EXERGY DESTRUCTION OF MAGNETIC NANOFLUID IN CURVED RECTANGULAR MICROCHANNELS

Mousa Mohammadpourfard
University of Tabriz
Sajjad Ahangar Zonouzi
Department of Mechanical Engineering, Razi University Kermanshah, Iran
F. Mohseni
Institute for Building Materials, Computational Physics for Engineering Materials, ETH Zurich, Switzerland

Краткое описание

This paper presents a numerical investigation of entropy generation and exergy destruction of a magnetic nanofluid in curved rectangular microchannels. The microchannels with different aspect ratios and curvatures have been studied using two-phase mixture model and control volume technique. Additionally the effect of a nonuniform transverse magnetic field on exergy destruction has been investigated. Based on the results obtained, it is found that the aspect ratio of the microchannels plays a considerable role in the entropy generation for the same length of microchannels. The total entropy generation also decreases with increasing curvature of the microchannels. It has also been shown that adding Fe3O4 nanoparticles to the base fluid decreases the entropy generation due to heat transfer irreversibilities. Furthermore, the total entropy generation decreases considerably on applying a nonuniform transverse magnetic field.