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Journal of Enhanced Heat Transfer
Импакт фактор: 0.562 5-летний Импакт фактор: 0.605 SJR: 0.211 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.v2.i1-2.30
pages 17-22

Performance Evaluation of Pin-Fin Heat Sinks Utilizing a Local Heating Method

Ko Minakami
Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei-shi, Tokyo 184, JAPAN; Energy and Mechanical Research Laboratories, Research and Development Center, Toshiba Corporation, 1, Toshiba Cho, Saiwai Ku, Kawasaki, 210, Japan
Masaru Ishizuka
Toyama Prefectural University, 5180 Kurokawa, Imizu, Toyama 939-0398, Japan
Sadanari Mochizuki
Tokyo University of Agriculture and Technology, 2-24-16, Naka-cho, Koganei-shi, Tokyo 184, JAPAN

Краткое описание

Experiments using a wind tunnel were conducted to clarify the distribution of the local heat transfer coefficient in a pin-fin array. Pin-fin test cores were constructed of pin rows arranged regularly in the flow direction. A local heating method was utilized to measure the heat transfer performance. Pin rows were heated through a direct application of an electric current, and their individual temperatures were estimated by measuring the electric resistance. Measurements were carried out under two conditions, one was the case when the individual pin rows in the pin-fin array were heated separately, and the other was the case when all the pin rows were heated simultaneously in a uniform heat flux. The range of the Reynolds number tested was 20−100. Flow visualization experiments were also carried out to observe the flow pattern in the pin arrays utilizing a fifteen times enlarged model and a water tunnel. The test results revealed the heat transfer performance of the fins, and the effects of an oscillating flow on the heat transfer mechanism are discussed.


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