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http://dx.doi.org/10.3795/KSME-B.2007.31.3.273

A Numerical Study of Natural Convection in a Square Enclosure with a Circular Cylinder at Different Vertical Locations  

Kim, Byeong-Su (부산대학교 대학원 기계공학과)
Lee, Dae-Sung (부산대학교 대학원 기계공학과)
Yoon, Hyun-Sik (부산대학교 첨단조선공학연구센터)
Lee, Hyun-Goo (부산대학교 기계공학부)
Ha, Man-Yeong (부산대학교 기계공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.31, no.3, 2007 , pp. 273-282 More about this Journal
Abstract
Numerical calculations are carried out for the natural convection induced by temperature difference between a cold outer square cylinder 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 finite volume method, for different Rayleigh numbers varying over the range of $10^4\;to\;10^6$. The study goes further to investigate the effect of an inner cylinder location on the heat transfer and fluid flow. The location of inner circular cylinder is changed vertically along the center-line of square enclosure. The number, size and formation of cell strongly depend on Rayleigh number and the position of inner circular cylinder. The changes in heat transfer quantities have been presented.
Keywords
Natural Convection; Boussinesq Approximation; Rayleigh Number;
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Times Cited By KSCI : 2  (Citation Analysis)
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