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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.2012001664
pages 595-612

Numerical Investigation of Flow and Heat Transfer around Two Semi-Circular Cylinders with a Splitter Plate

Hadi Heidary
Department of Mechanical Engineering, Babol University of Technology, Babol, P.O. Box 484, Islamic Republic of Iran
Mousa Farhadi
Faculty of Mechanical Engineering, Noshirvani University of Technology, Babol, Islamic Republic of Iran
Kurosh Sedighi
Babol University of Technology, Faculty of Mechanical Engineering, Babol, Iran
Mostafa Nourollahi
Department of Mechanical Engineering, Babol University of Technology, Babol, P.O. Box 484, Islamic Republic of Iran

Краткое описание

In this study, the effect of different arrangements of two semi-circular cylinders with and without a splitter plate on the flow field and heat transfer rate from the cylinders was investigated numerically. Numerical simulations have been done for one Reynolds number, Re = 250, based on the semi-cylinder diameter (d), at two different horizontal distances (s : s = 1d to 2d) and four different vertical distances between the centers of cylinders (2b : b = 0d to 0.75D). The splitter plate length is assumed to be 1 d. The results show that increasing the horizontal distance between the cylinders decreases the drag coefficient for both cylinders but an increase of the vertical distance has contrary effects on the drag coefficient. Moreover, putting a splitter plate between the cylinders increases the drag coefficient especially for the first cylinder. It is because the existence of the splitter plate enlarges the negative pressure domain behind the first cylinder in comparison to the cases without a splitter plate. The results show that the Nusselt number depends on the length of the recirculation zone and vortex generation mechanism and the asymmetric arrangement of cylinders (b/d > 0) has a bigger Nusselt number than the symmetric arrangement (b/d = 0), especially for the second cylinder.


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