| Title |
A Numerical Study of Natural Convection in a Square Enclosure with two Hot Circular Cylinders |
| Authors |
박성현(Seong Hyun Park) ; 박용갑(Yong Gap Park) ; 하만영(Man Yeong Ha) ; 윤현식(Hyun Sik Yoon) ; 손창민(Chang Min Son) |
| DOI |
http://dx.doi.org/10.6110 /KJACR.2012.24.3.247 |
| Keywords |
자연대류 ; Ra 수 ; 2개의 실린더 Natural convection ; Rayleigh Number ; Two cylinders |
| Abstract |
Numerical calculations are carried out for the natural convection in a square enclosure with two hot cylinders induced by temperature difference between a cold outer rectangular cylinder and two hot circular cylinders. A two-dimensional solution for unsteady natural convection is obtained, using the immersed boundary method (IBM) to model two inner circular cylinders based on finite volume method, for different Rayleigh numbers varying over the range of 103 to 105. The study goes further to investigate the effect of the location of two cylinders on the heat transfer and fluid flow. The location of inner circular cylinders is changed vertically along the center-line of square enclosure. The changes of heat transfer quantities have been presented. |