Journal Title : International Journal of Modern Trends in Engineering and Science

Author’s Name : S.Naveen kumar | V.Madhusudhan | D.Kiruthigadevi  unnamed

Volume 03 Issue 07 2016

ISSN no:  2348-3121

Page no: 5-11

Abstract – Extended surfaces, commonly known as fins, often offer an economical and trouble free solution in many situations demanding natural convection heat transfer. Heat sinks in the form of fin arrays on horizontal and vertical surfaces used in variety of engineering applications, studies of heat transfer and fluid flow associated with such arrays are of considerable engineering significance. The main controlling variable generally available to designer is geometry of fin arrays. Considering the above fact, natural convection heat transfer from vertical rectangular fin arrays with triangular notch at the center have been investigated experimentally and theoretically. Moreover notches of different aspect ratio have also been analyzed for the purpose of comparison and optimization. In a lengthwise short array where the single chimney flow pattern is present, the central portion of fin flat becomes ineffective due to the fact that, already heated air comes in its contact. In the present study, the fin flats are modified by removing the central fin portion by cutting a triangular notch. This dissertation report presents an experimental analysis of the results obtained over a range of fin heights and heat dissipation rate. Attempts are made to establish a comparison between the experimental results and results obtained by using CFD software.

Keywords— Rectangular fin; Comparison; Optimization 


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