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首页> 外文期刊>Journal of Heat Transfer >Natural Convection Heat Transfer From Horizontal Rectangular Inverted Notched Fin Arrays
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Natural Convection Heat Transfer From Horizontal Rectangular Inverted Notched Fin Arrays

机译：水平矩形倒置缺口翅片阵列的自然对流换热

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摘要

The variables for natural convection cooling with the help of finned surfaces are orientation and geometry. In lengthwise short array (L/H ～5), where single chimney flow pattern is present, a stagnant zone is created at the central bottom portion of fin array channel and hence it does not contribute much in heat dissipation. Hence it is removed in the form of inverted notch at the central bottom portion of fin to modify its geometry for enhancement of heat transfer. An experimental setup is developed for studying the investigation on normal and inverted notched fin arrays (INFAs). Fin spacing, heater input, and percentage of area removed in the form of inverted notch are the parameters. For few spacing, it is verified by computational fluid dynamics analysis (Course Notes on Introduction to Commercial CFD of Tridiagonal Solutions, Pune), and the results are well matching. It is found that the average heat transfer coefficient for INFAs is nearly 30-40% higher as compared with normal array.
机译：在翅片表面的帮助下自然对流冷却的变量是方向和几何形状。在纵向短阵列（L / H〜5）中，存在单个烟囱流动模式，在翅片阵列通道的中央底部形成一个停滞区，因此对散热的贡献不大。因此，在鳍片的中央底部以倒凹口的形式将其去除，以改变其几何形状以增强热传递。开发了一个实验装置，用于研究对正常和倒置缺口鳍阵列（INFA）的研究。翅片间距，加热器输入和以倒凹口形式去除的面积百分比是参数。对于很小的间距，可以通过计算流体动力学分析（Pune的Tridiagonal Solutions的商业CFD入门课程注解）进行验证，并且结果非常匹配。发现与普通阵列相比，INFA的平均传热系数高出近30-40％。

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