碩士 / 淡江大學 / 航空太空工程學系碩士班 / 103 / This study is based on the writings of Adrian Bejan Design with Constructal Theory, changing the shape of sunflowers fin. Investigate different shape of fins for heat transfer characteristics. Maintain the total surface area of sunflowers fin and changes its Svelteness, the numbers of bifurcated fins, dimensionless parameters D and R, and use numerical simulation to analyze the influence of changes the structure of fins for the thermal resistance. The heat source is heated by fixed wattage. Using force convection for cooling. The numerical simulation results compare with theory, the analysis shows that changes the Svelteness, the number of bifurcated fin, dimensionless parameters D and R indeed influence the thermal resistance, increasing the number of bifurcated fins, the values of dimensionless parameters D and R can be reduced the thermal resistance, and decrease the value of Svelteness also can be reduced the thermal resistance.
| Identifer | oai:union.ndltd.org:TW/103TKU05295007 |
| Date | January 2015 |
| Creators | Wei-Chieh Chen, 陳煒杰 |
| Contributors | Shi-Min Lee, 李世鳴 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 84 |
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