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원형 핀이 부착된 실린더 주위의 유동 및 열전달에 관한 수치적 연구

Numerical Study on the Fluid Flow and Heat Transfer Past a Cylinder with a Periodic Array of Circular Fins

  • 윤현식 (부산대학교 첨단조선공학연구센터) ;
  • 전호환 (부산대학교 첨단조선공학연구센터) ;
  • 이동혁 (LG전자 DAC 연구소)
  • Yoon, Hyun-Sik (Advanced Ship Engineering Research Center, Pusan National University) ;
  • Chun, Ho-Hwan (Advanced Ship Engineering Research Center, Pusan National University) ;
  • Lee, Dong-Hyuk (LG Electronics DAC Lab)
  • 발행 : 2006.06.20

초록

Three-dimensional and time-dependent solution for the fluid flow and heat transfer past a circular cylinder with fins is obtained using accurate and efficient spectral methods. A Fourier expansion with a corresponding uniform grid is used along the circumferential direction. A spectral multi-domain method with a corresponding Chebyshev collocation is used along r-z plane to handle fins attached to the surface of a circular cylinder. At the Reynolds number of 300 based on a cylinder diameter, results with fins are compared with those without fins in order to see the effects of the presence of fins on three-dimensional and unsteady fluid flow and heat transfer past a bluff body. The detail structures of fluid flow and temperature field are obtained as a function of time to investigate how the presence of fins changes heat transfer mechanism related to the vortical structure in the wake region.

키워드

참고문헌

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