| Summary: | 碩士 === 國立臺北科技大學 === 車輛工程系所 === 100 === The thermal and flow characteristic of plate-fan heat sink in rectangular channel flow with installation of piezoelectric fans which is investigated numerically by Fluent. Twin piezoelectric fans are installed on the flow passage of the channel. The effect of distance between end of (a), distance between tip of piezoelectric fans and front of heat sink (Lg), configuration of piezoelectric fans and rectangular channel flow of height (Hw) and fin number of heat sink (n),Twin piezoelectric fans can be in phase and out of phase.
The results show that the heat transfer can be enhanced of Nusselt number by install single and twin piezoelectric fans properly. The better performance is obtained as Hw=15mm, piezoelectric fans is installed in front of heat sink position as Lg=5mm and twin piezoelectric distance between a=20mm.The efficiency of inserting piezoelectric fans in case of 10 fins is better than of 14 fins. The efficacy of inserting piezoelectric fans increases when the width of heat sink flow channel increases.
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