Mixed convection heat transfer from confined tandem square cylinders in a horizontal channel

Handle URI:
http://hdl.handle.net/10754/563060
Title:
Mixed convection heat transfer from confined tandem square cylinders in a horizontal channel
Authors:
Huang, Zhu; Xi, Guang; Zhang, Wei ( 0000-0001-6323-1234 ) ; Wen, Suping
Abstract:
This paper presents a numerical study on the two-dimensional laminar mixed convective flow and heat transfer around two identical isothermal square cylinders arranged in tandem and confined in a channel. The spacing between the cylinders is fixed with four widths of the cylinder and the blockage ratio and the Prandtl number are fixed at 0.1 and 0.7 respectively. The mixed convective flow and heat transfer is simulated by high accuracy multidomain pseudospectral method. The Reynolds number (Re) is studied in the range 80 ≤ Re ≤ 150, the Richardson number (Ri) demonstrating the influence of thermal buoyancy ranges from 0 to 1. Numerical results reveal that, with the thermal buoyancy effect, the mixed convective flow sheds vortex behind the cylinders and keeps periodic oscillating. The variations of characteristic quantities related to flow and heat transfer processes, such as the overall drag and lift coefficients and the Nusselt numbers, are presented and discussed. Furthermore, the influence of thermal buoyancy on the fluid flow and heat transfer are discussed and analysed. © 2013 Elsevier Ltd. All rights reserved.
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program
Publisher:
Elsevier BV
Journal:
International Journal of Heat and Mass Transfer
Issue Date:
Nov-2013
DOI:
10.1016/j.ijheatmasstransfer.2013.07.075
Type:
Article
ISSN:
00179310
Sponsors:
The authors gratefully acknowledge the financial supports provided by National Natural Science Foundation of China (Nos. 50976085, 51236006 and 51076122). Helpful suggestions from Zhongguo Sun, Yangyang Liang, Wei Wang, Xiao Chen and Dichen Li are appreciated.
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorHuang, Zhuen
dc.contributor.authorXi, Guangen
dc.contributor.authorZhang, Weien
dc.contributor.authorWen, Supingen
dc.date.accessioned2015-08-03T11:34:52Zen
dc.date.available2015-08-03T11:34:52Zen
dc.date.issued2013-11en
dc.identifier.issn00179310en
dc.identifier.doi10.1016/j.ijheatmasstransfer.2013.07.075en
dc.identifier.urihttp://hdl.handle.net/10754/563060en
dc.description.abstractThis paper presents a numerical study on the two-dimensional laminar mixed convective flow and heat transfer around two identical isothermal square cylinders arranged in tandem and confined in a channel. The spacing between the cylinders is fixed with four widths of the cylinder and the blockage ratio and the Prandtl number are fixed at 0.1 and 0.7 respectively. The mixed convective flow and heat transfer is simulated by high accuracy multidomain pseudospectral method. The Reynolds number (Re) is studied in the range 80 ≤ Re ≤ 150, the Richardson number (Ri) demonstrating the influence of thermal buoyancy ranges from 0 to 1. Numerical results reveal that, with the thermal buoyancy effect, the mixed convective flow sheds vortex behind the cylinders and keeps periodic oscillating. The variations of characteristic quantities related to flow and heat transfer processes, such as the overall drag and lift coefficients and the Nusselt numbers, are presented and discussed. Furthermore, the influence of thermal buoyancy on the fluid flow and heat transfer are discussed and analysed. © 2013 Elsevier Ltd. All rights reserved.en
dc.description.sponsorshipThe authors gratefully acknowledge the financial supports provided by National Natural Science Foundation of China (Nos. 50976085, 51236006 and 51076122). Helpful suggestions from Zhongguo Sun, Yangyang Liang, Wei Wang, Xiao Chen and Dichen Li are appreciated.en
dc.publisherElsevier BVen
dc.subjectChannelen
dc.subjectMixed convection heat transferen
dc.subjectTandem square cylindersen
dc.subjectThermal buoyancyen
dc.titleMixed convection heat transfer from confined tandem square cylinders in a horizontal channelen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
dc.identifier.journalInternational Journal of Heat and Mass Transferen
dc.contributor.institutionXi An Jiao Tong Univ, Sch Energy & Power Engn, Dept Fluid Machinery & Engn, Xian 710049, Shaanxi, Peoples R Chinaen
kaust.authorZhang, Weien
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