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标题：Heat Transfer Enhancement and Thermal Performance of Extended Surfaces with Cavity
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作者：Nitish Kumar Jha ; Kailash B A
期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2015
卷号：4
期号：10
页码：9792
DOI：10.15680/IJIRSET.2015.0410043
出版社：S&S Publications
摘要：Heat transfer rate increases by using different shape of extension but it results in increase in cost of thematerial. Different shape of cavity can be utilised to increase the rate of heat transfer which can also reduce the cost ofmanufacturing. In the present work thermal analysis is carried out for different shape of cavity on extended surfaceusing Ansys-MultiPhysics software. The simulation is carried out using the CFX of ANSYS 14.5. Thermal analysis isperformed and temperature variations with respect to distance at which heat flow occur through the fin is analyzed. Inthis study, different shape of cavity such as rectangular, semicircular, trapezoidal and triangular has been considered onthe rectangular extension. Fin without cavity has been compared with fin with different shapes of cavity. Heat transferrate, efficiency and effectiveness for all the geometry calculated analytically and numerically using simulation. Heattransfer rate for fin with rectangular cavity has got more heat transfer rate than all the remaining geometry.
关键词：Extended surface; Cavity; Heat Transfer; Thermal Performance; Simulation