Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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A Numerical Study of Natural Convection in a Square Enclosure with two Hot Circular Cylinders

두 개의 뜨거운 원형 실린더가 존재하는 사각형 실린더 내부의 자연대류에 관한 수치적 연구

  • Park, Seong-Hyun (School of Mechanical Engineering, Pusan National University) ;
  • Park, Yong-Gap (School of Mechanical Engineering, Pusan National University) ;
  • Ha, Man-Yeong (School of Mechanical Engineering, Pusan National University) ;
  • Yoon, Hyun-Sik (Advanced Ship Engineering Research Center, Pusan National University) ;
  • Son, Chang-Min (School of Mechanical Engineering, Pusan National University)
  • 박성현 (부산대학교 기계공학부) ;
  • 박용갑 (부산대학교 기계공학부) ;
  • 하만영 (부산대학교 기계공학부) ;
  • 윤현식 (부산대학교 첨단조선공학 연구센터) ;
  • 손창민 (부산대학교 기계공학부)
  • Received : 2011.09.16
  • Accepted : 2012.01.03
  • Published : 2012.03.10
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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 $10^3$ to $10^5$. 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.

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References

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