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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
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 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.2018026449
pages 757-772

NUMERICAL ANALYSIS OF THE THERMAL PERFORMANCE OF A NOVEL DOUBLE-LAYERED HEAT SINK WITH STAGGERED PIN FINS

Yicang Huang
School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China; The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
Hui Li
School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China; The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
Shengnan Shen
School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China; The Institute of Technological Sciences, Wuhan University, Wuhan 430072, China
Yongbo Xue
School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China
Mingliang Xu
School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China
Tianqi Zhai
School of Power and Mechanical Engineering, Wuhan University, Wuhan 430072, China
Guoqing Zhang
School of Power and Mechanical Engineering, Wuhan University, Wuhan, China 430072

Краткое описание

A new design of a heat sink, called double-layered staggered pin-fin heat sink (DL-SPFHS), is proposed in this work, and its thermal performance is investigated numerically. The thermal performance of DL-SPFHS was compared with the commonly used double-layered microchannel heat sink (DL-MCHS) at the same volume flow rate and overall geometric dimensions. The maximum wall temperature on the bottom wall of DL-SPFHS is 13.2 K lower than that of DL-MCHS. Furthermore, the effects of two geometric parameters, namely, the pin-fin dimension ratio of the fin length to fin width and pin-fin spacing ratio of the gap length to fin width, on thermal resistance and pressure drop were analyzed. With the increase in the pin-fin dimension ratio, the thermal resistance of DL-SPFHS decreased first and then increased, and with the pin-fin dimension ratio of 3, DL-SPFHS achieved the lowest thermal resistance which is 5.3% lower than that of the DL-SPFHS with the ratio of 1. However, the thermal resistance of DL-SPFHS increased linearly with increase of the pin-fin spacing ratio. The total pressure drop decreased significantly with increase in either the pin-fin dimension ratio or pin-fin spacing ratio.

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