Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Thermal Transport from an Aluminum Foam Heat Sink in a Confined Impinging Air Jet

국한 충돌공기제트에 의한 발포 알루미늄 방열기의 열전달 특성

  • 황준 (국민대학교 대학원 기계공학과) ;
  • 김서영 (KIST 열유동제어센터) ;
  • 강병하 (국민대학교 기계.자동차공학부)
  • Published : 2003.04.01
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Abstract

An experimental study has been performed on thermal transport from an aluminum foam heat sink under a confined impinging air jet. Three kinds of aluminum foam heat sinks with 10, 20 and 40 PPI and a conventional pin-fin heat sink are tested in the present study. The jet Reynolds number is varied in the range of Re=667～5672 The effect of the confinement disk diameter and the distance between the confinement disk and the heater surface on the averaged Nusselt number is investigated in detail. The results are also compared with those of the unconfined impinging air jet. The critical distance, at which thermal performance shows a minimum compared to the unconfined jet impinging, will be described in terms of the Reynolds number and the pore density of the aluminum foam.

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References

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