| Title |
Flow Control and Heat Transfer Enhancement from a Heated Block by an Inflow Pulsation(II) Thermal Field Computation |
| Keywords |
Flow mixing ; 유동혼합 ; Forced convection ; 강제대류 ; Inflow pulsating ; 입구 유동 가진 ; Heat trnasfer enhancement ; 열전달촉진 |
| Abstract |
The characteristics of a pulsating flow field and the associated thermal transport from a heated block representing heat dissipating electronic component in a channel have been numerically investigated. At the channel inlet a pulsating sinusoidal flow is imposed at a 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. |