Numerical Study of Effects of Natural Convection Induced by Heated Fins

• Main Authors: Yin-Lin Kuo, 郭衍麟
• Other Authors: Chen-Yuan Wang
• Format: Others
• Language: zh-TW
• Published: 1999
• Online Access: http://ndltd.ncl.edu.tw/handle/84977020618436843570

碩士 === 國立成功大學 === 航空太空工程學系 === 87 === Numerical method has been used to study the effects of natural convection induced by heated fins in a square cavity. Parmetric studies have been conducted to study the effetcs of Reyleigh number, the number of fins and the fin length on heat transfer performance in enclosure. The results indicate that even though fins increase the total contact area between fluid and solid, but the secondary flow, which appears in the region between solid fins, blocks heat exchange between cold fluid and hot wall and results in the decrement of total heat transfer rate. Simlary, increase in the length of fins enhances the area of secondary flow and results in lower heat transfer performance.