碩士 / 國立成功大學 / 機械工程學系碩博士班 / 101 / The present study applies the numerical inverse methods and fluid dynamics simulation software with the measured temperature data to research the heat transfer characteristic of cooling fins which placed in different height and apparent enclosures. Because of non-uniform heat transfer coefficient distribution on the fin. First, whole of plate fin was divided into several regions, and the heat transfer coefficient on each region is assumed to be unknown constant. And then, the measured temperatures is applied to inverse scheme which was in conjunction with Least squares scheme and finite difference. The inverse scheme results were comparative with empirical formula in order to verify the results were reasonable. The simulation model was determined by the criterion of experimental results and inverse results, and the inner enclosure’s flow and temperature field was investigated. The results showed that the average heat transfer coefficient of fins increased with the increase of fin spacing, increase of enclosure’s height and enclosures which was in favor of heat transfer. Specially, under the circumstance of enclosures which was in favor of heat transfer, the effect of fin’s spacing and height of enclosure were more obvious.
| Identifer | oai:union.ndltd.org:TW/101NCKU5490031 |
| Date | January 2013 |
| Creators | Ling-JuTeseng, 曾鈴如 |
| 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 | 91 |
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