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Optimum geometric arrangement of vertical rectangular fin arrays in natural convection

机译:自然对流中垂直矩形翅片阵列的最佳几何排列

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摘要

The optimal spacing between isothermal laminar natural convection plates cooled by air for maximal heat transfer has been determined analytically and numerically. It is found that the optimal plate's allocation spacing is different from the conventional way, where the boundary layers of the plates merge early, it is the distinguishing feature of the outlet velocity that causes an enhancement of heat transfer. Further comparison results verify that our expression and numerical results and Rohsenow expression are very consistent. In the general condition, an optimized spacing expression of the maximum heat transfer density for a given volume is derived. It may be expected that the heat transfer enhancement can be accomplished by inserting multi-scale plates into the boundary layer according to the constructal theory.
机译:通过分析和数值确定了由空气冷却的等温层流自然对流板之间的最佳间距,以实现最大的热传递。发现最佳板的分配间隔与传统方法不同,在传统方法中,板的边界层较早合并,正是出口速度的显着特征导致了传热的增强。进一步的比较结果证明我们的表达式和数值结果与Rohsenow表达式非常一致。在一般条件下,得出给定体积的最大传热密度的优化间距表达式。可以预期,根据构造理论,可以通过将多尺度板插入边界层中来实现传热的增强。

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