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首页> 外文期刊>International Journal of Heat and Mass Transfer >An asymptotic approach to generalizing the experimental data on convective heat transfer of tube bundles in crossflow
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An asymptotic approach to generalizing the experimental data on convective heat transfer of tube bundles in crossflow

机译：渐进法概括横流中管束对流换热的实验数据

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摘要

Based on the analysis of experimental data the universal methods of calculating convective heat transfer of smooth and finned tube bundles in the crossflow have been developed over the ranges of geometric characteristics covering all practical needs at the Reynolds number Re = 3 x 103.. .1 x 105. The distinctive feature of the methods proposed is that the generalized similarity equation of convective heat transfer takes into account the dependence of the Reynolds number exponent on tube pitch characteristics in a bundle. This has allowed the mechanism of heat transfer and hydraulic performance in tube bundles to be taken into utmost consideration and the asymptotic character to be given to the generalized dependence. In turn, this has permitted one to show the presence of maximum of heat transfer intensity and also to cover limiting combinations of pitches, at which differences in staggered and in-line arrangements of tubes are leveled, i.e., practically the restrictions on the ranges of tube pitch characteristics of bundles can be removed.
机译：在对实验数据进行分析的基础上，已经开发出了计算错流中光滑和翅片管束对流传热的通用方法，其几何特性范围涵盖了雷诺数Re = 3 x 103 .. .1的所有实际需求。 x 105.所提出方法的独特之处在于，对流传热的广义相似性方程考虑了雷诺数指数对管束间距特性的依赖性。这使得可以充分考虑管束中的传热机制和水力性能，并且可以将渐近特性赋予广义的依赖关系。反过来，这使得人们可以显示出最大的传热强度，并覆盖了螺距的有限组合，在这种组合中，管子的交错排列和直列排列的差异得以平衡，即实际上限制了螺距的范围。束的管节距特性可以消除。

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