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Heat Transfer Research
Fator do impacto: 0.404 FI de cinco anos: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN Imprimir: 1064-2285
ISSN On-line: 2162-6561

Volumes:
Volume 51, 2020 Volume 50, 2019 Volume 49, 2018 Volume 48, 2017 Volume 47, 2016 Volume 46, 2015 Volume 45, 2014 Volume 44, 2013 Volume 43, 2012 Volume 42, 2011 Volume 41, 2010 Volume 40, 2009 Volume 39, 2008 Volume 38, 2007 Volume 37, 2006 Volume 36, 2005 Volume 35, 2004 Volume 34, 2003 Volume 33, 2002 Volume 32, 2001 Volume 31, 2000 Volume 30, 1999 Volume 29, 1998 Volume 28, 1997

Heat Transfer Research

DOI: 10.1615/HeatTransRes.2018027243
pages 1231-1249

EFFECT OF CORRUGATION HEIGHT ON FLOW AND HEAT TRANSFER MECHANISM IN A CORRUGATION CHANNEL

Huaizhi Han
School of Chemical Engineering, Sichuan University, Chengdu 610065, China; College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China
Ruitian Yu
College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China

RESUMO

The purpose of the present study is to assess the fl ow and heat transfer performance of a corrugation channel considering various corrugation heights. Furthermore, heat transfer enhancement mechanism is revealed. The results show that the Nusselt number off ered by a corrugation channel with H = 3, 4.5, and 6 mm is equal to around 41.89 to 123.07, 55.56 to 150.02, and 72.18 to 175. The Nusselt number with H = 6 mm is 42−72% higher than that with H = 3 mm. The results show that two peak values exist near the entrance and exit along the concave wall. Thus, a peak value and the lowest point appear near the entrance and the exit along the convex wall. Fluid recirculation zones are generated upstream of the concave wall and downstream of the convex wall. The thermal boundary layer becomes thinnest downstream of the corrugation for the concave wall and near the entrance of the corrugation for the convex wall. Moreover, the highest level of TKE concentrates on the convex wall.

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