A numerical study of natural convection in a square enclosure with a circular cylinder at different vertical locations

被引：456

作者：

Kim, B. S. ^{[1
]}

Lee, D. S. ^{[1
]}

Ha, M. Y. ^{[1
]}

Yoon, H. S. ^{[2
]}

机构：

[1] Pusan Natl Univ, Dept Mech Engn, Pusan 609735, South Korea

[2] Pusan Natl Univ, Adv Ship Engn Res Ctr, Pusan 609735, South Korea

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2008年 / 51卷 / 7-8期

关键词：

D O I：

10.1016/j.ijheatmasstransfer.2007.06.033

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Numerical calculations are carried out for natural convection induced by a temperature difference between a cold outer square enclosure and a hot inner circular cylinder. A two-dimensional solution for unsteady natural convection is obtained, using the immersed boundary method (IBM) to model an inner circular cylinder based on the finite volume method for different Rayleigh numbers varying over the range of 10(3)-10(6). The study goes further to investigate the effect of the inner cylinder location on the heat transfer and fluid flow. The location of the inner circular cylinder is changed vertically along the center-line of square enclosure. The number, size and formation of the cell strongly depend on the Rayleigh number and the position of the inner circular cylinder. The changes in heat transfer quantities have also been presented. (C) 2007 Elsevier Ltd. All rights reserved.

引用

页码：1888 / 1906

页数：19

共 26 条

[1] Natural convection in an annulus between two isothermal concentric square ducts [J].

Asan, H .

INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER, 2000, 27 (03) :367-376

[2] Natural convection from a horizontal cylinder in a rectangular cavity [J].

Cesini, G ;

Paroncini, M ;

Cortella, G ;

Manzan, M .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1999, 42 (10) :1801-1811

[3] A numerical study of natural convection around a square, horizontal, heated cylinder placed in an enclosure [J].

De, Arnab Kumar ;

Dalal, Amaresh .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2006, 49 (23-24) :4608-4623

[4] Simulation of natural convection in eccentric annuli between a square outer cylinder and a circular inner cylinder using local MQ-DQ method [J].

Ding, H ;

Shu, C ;

Yeo, KS ;

Lu, ZL .

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 2005, 47 (03) :291-313

[5] NATURAL-CONVECTION OVER A ROTATING CYLINDRICAL HEAT-SOURCE IN A RECTANGULAR ENCLOSURE [J].

GHADDAR, NK ;

THIELE, F .

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 1994, 26 (06) :701-717

[6] NATURAL-CONVECTION HEAT-TRANSFER BETWEEN A UNIFORMLY HEATED CYLINDRICAL ELEMENT AND ITS RECTANGULAR ENCLOSURE [J].

GHADDAR, NK .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 1992, 35 (10) :2327-2334

[7] A numerical study on three-dimensional conjugate heat transfer of natural convection and conduction in a differentially heated cubic enclosure with a heat-generating cubic conducting body [J].

Ha, MY ;

Jung, MJ .

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 2000, 43 (23) :4229-4248

[8] Unsteady fluid flow and temperature fields in a horizontal enclosure with an adiabatic body [J].

Ha, MY ;

Kim, IK ;

Yoon, HS ;

Lee, S .

PHYSICS OF FLUIDS, 2002, 14 (09) :3189-3202

[9] Two-dimensional and unsteady natural convection in a horizontal enclosure with a square body [J].

Ha, MY ;

Kim, IK ;

Yoon, HS ;

Yoon, KS ;

Lee, JR ;

Balachandar, S ;

Chun, HH .

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS, 2002, 41 (02) :183-210

[10] NUMERICAL-SOLUTIONS FOR TRANSIENT NATURAL-CONVECTION IN A SQUARE CAVITY WITH DIFFERENT SIDEWALL TEMPERATURES [J].

HYUN, JM ;

LEE, JW .

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 1989, 10 (02) :146-151

← 1 2 3 →