碩士 / 國立成功大學 / 機械工程學系碩博士班 / 100 / The present study applies the numerical inverse methods and computational fluid dynamics commercial software with the experimental to explore a variety of different types of cooling fins, placed in the openings of rectangular shell, the heat transfer characteristics and flow field distribution. Due to the non-uniform distribution of the heat transfer coefficient, the whole plate fin is divided into several sub-fin regions before performing the inverse scheme, and the average heat transfer coefficient on each sub-fin region is assumed to be unknown. Later, the inverse scheme of the finite difference method in conjunction with the Least squares scheme and experimental measured temperatures is applied to determine the present results. In addition, the paper also by computational fluid dynamics commercial software to obtain the pressure drop, the distribution of temperature and speed of the fins on the heat transfer coefficient as well as within the rectangular enclosure. The results show that the average heat transfer coefficient of fins increased with the increase of fin spacing and reduced as the fin height increases, in order to verify the accuracy and reliability of the numerical results, the average heat transfer coefficient and the associated compared to the literature of the results of the empirical formula, and calculate the temperature of the fin measurement position will also be compared and measured temperature. In addition, this paper will also explore the impact of the grid number on the numerical results.
| Identifer | oai:union.ndltd.org:TW/100NCKU5490093 |
| Date | January 2012 |
| Creators | Shih-TingLai, 賴詩婷 |
| Contributors | Han-Taw Chen, 陳寒濤 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 88 |
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