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Flow Control and Heat Transfer Enhancement from a Heated Block by an Inflow Pulsation (II) Thermal Field Computation  

리광훈 (서울시립대학교 기계정보공학과)
김서영 (KIST 열유동제어연구센)
성형진 (한국과학기술원 기계공학과)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.14, no.7, 2002 , pp. 599-606 More about this Journal
Abstract
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.
Keywords
Flow mixing; Forced convection; Inflow pulsating; Heat trnasfer enhancement;
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