碩士 / 國立臺北科技大學 / 車輛工程系所 / 102 / The converse piezoelectric effects of piezoelectric material make piezoelectric chip bringing high frequency damping, plastic fan flapping fluid around bringing convection, and then achieve heat dissipation. This study discuss that piezoelectric fan enclose heat sink fins let cryogenic fluid into heat sink efficacious and heat is took away by heat sink fins. Using fluid dynamic software, ANSYS CFD/Fluent, calculate transient flow field in different parameters, it includes the distance between piezoelectric fan and heat sink(Lg), fin number(n), fin height(Hf), fin gap(G). The performance of standard depends on Nusselt number(Nu) and thermal resistance(Rth) by solver. As the result, when piezoelectric fan replace on front of heat sink, the heat dissipation is useful. According to fin height raised and heat dissipation area increased enhances cooling performance effective. Whether the heat sink confined depends on fin number and piezoelectric fan position.
| Identifer | oai:union.ndltd.org:TW/102TIT05162007 |
| Date | January 2014 |
| Creators | Jyun-Ji Lu, 盧俊吉 |
| Contributors | 蔡國隆 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 86 |
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