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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
Journal of Enhanced Heat Transfer
Импакт фактор: 0.562 5-летний Импакт фактор: 0.605 SJR: 0.175 SNIP: 0.361 CiteScore™: 0.33

ISSN Печать: 1065-5131
ISSN Онлайн: 1026-5511

Выпуски:
Том 26, 2019 Том 25, 2018 Том 24, 2017 Том 23, 2016 Том 22, 2015 Том 21, 2014 Том 20, 2013 Том 19, 2012 Том 18, 2011 Том 17, 2010 Том 16, 2009 Том 15, 2008 Том 14, 2007 Том 13, 2006 Том 12, 2005 Том 11, 2004 Том 10, 2003 Том 9, 2002 Том 8, 2001 Том 7, 2000 Том 6, 1999 Том 5, 1998 Том 4, 1997 Том 3, 1996 Том 2, 1995 Том 1, 1994

Journal of Enhanced Heat Transfer

DOI: 10.1615/JEnhHeatTransf.2018019982
pages 61-78

ENHANCED HEAT TRANSFER OF Cu-WATER NANOFLUID IN A CHANNEL WITH WALL MOUNTED BLUNT RIBS

Sanjib Kr Pal
Department of Mathematics, Indian Institute of Technology, Kharagpur, India
Somnath Bhattacharyya
Department of Mathematics, Indian Institute of Technology, Kharagpur, India

Краткое описание

A numerical study on the heat transfer characteristics of the Cu-water nanofluid within a heated patterned channel is made. One wall of the channel is patterned by placing surface mounted blunt ribs. The objective of this study is to analyze enhanced heat transfer performance in a thin channel by using nanofluid as a cooling fluid combined with geometric modulation of the channel walls. The flow and thermal field are analyzed for a wide range of Reynolds number, based on the incoming flow and channel height, and nanoparticle volume fraction. The heat transfer performance is studied by evaluating the rate of heat transfer, entropy generation, pressure drop, and thermal performance factor. A single-phase model is adopted to analyze the nanofluid flow and heat transfer. Increase in nanoparticle volume fraction produces an increment in heat transfer as well as entropy generation. The wall mounted protrusion creates a flow separation and the recirculation eddy downstream of the protrusion grows with the increase of the nanoparticle volume fraction. The present study shows that a multiple number of ribs creates an enhanced heat transfer with reduced thermal performance compared to a single rib. An increase in nanoparticle volume fraction increases the thermal performance.


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