Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Computational Simulation of Heat flow phenomena in Newly Designed Heat Sinks

뉴 디자인된 히트싱크의 열 유동 현상 컴퓨터 시뮬레이션

  • Lim Song Chul (Dept. of Materials Science ana Eng., Seoul National University of Technology) ;
  • Choi Jong Un (Dept. of Materials Science ana Eng., Seoul National University of Technology) ;
  • Kang Kae Myung (Dept. of Materials Science ana Eng., Seoul National University of Technology)
  • 임송철 (서울산업대학교 신소재공학과) ;
  • 최종운 (서울산업대학교 신소재공학과) ;
  • 강계명 (서울산업대학교 신소재공학과)
  • Published : 2004.11.01
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Abstract

For improvement of heat dissipation performance, heat analysis is conducted on the newly designed heat sinks under two convection conditions by using computational fluid dynamics(CFD). Three types of heat sink, plate, wave and top vented wave, are used, and convection conditions are the variations of gravity direction at natural convection and of fan location at forced convection. The results of analysis showed that the heat resistances of top vented wave heat sink were $0.17^{\circ}C$/W(forced convection) and $0.48^{\circ}C$/W(natural convection). In the case of natural convection, gravity direction affected heat flow change, and protection against heat performance was superior in case of z-axis gravity direction. Under the forced convection, all the heat sinks revealed superior thermal characteristics in the fan position of z-axis rather than y-axis. In this study, it was observed that the top vented wave type heat sink showed the best ability of heat radiation comparing with the others.

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References

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