• Title/Summary/Keyword: Heat trnasfer enhancement

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Flow Control and Heat Transfer Enhancement from a Heated Block by an Inflow Pulsation (II) Thermal Field Computation (입구 유동 가진에 의한 사각 발열체 주위의 유동제어 및 열전달촉진 (II) 온도장 수치해석)

  • 리광훈;김서영;성형진
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.14 no.7
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    • pp.599-606
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    • 2002
  • uniform temperature. The surfaces of the block are taken at a constant higher temperature. The channel walls are assumed to be adiabatic. Results on the time-dependent temperature field are obtained and averaged over a cycle of pulsation. The effect of the important governing parameters, such as the Strouhal number on the flow and the heat transfer is investigated in detail. The results indicate that the recirculating flow behind the block are substantially affected by the pulsation frequency. These, in turn, have a strong influence on the thermal transport from the heated element to the pulsating flow. The frequency at which the enhancement is maximum is determined.