COMPREHENSIVE CORRELATING EQUATION FOR LAMINAR, ASSISTING, FORCED AND FREE CONVECTION
COMPREHENSIVE CORRELATING EQUATION FOR LAMINAR, ASSISTING, FORCED AND FREE CONVECTION
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DOI：
10.1002/aic.690230103
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发表时间：
1977-01-01
期刊：
影响因子：
3.7
通讯作者：
CHURCHILL, SW
中科院分区：
文献类型：
--
作者：
CHURCHILL, SW
将纯自由对流和纯强迫对流的关联方程相结合，建立了一个辅助对流的关联方程。这些分量方程基于等温垂直板的层流边界层理论。辅助对流的理论值表明，三次方和的三次方根给出了最佳表示，与先前研究者对二次或四次幂的选择和合理化形成对比。通过添加极限值Nuo对该表达式进行了修改，以在边界层理论域以下获得更好的表示，并将其推广到均匀加热以及球体和水平圆柱体：特征长度的适当选择。
A correlating equation for assisting convection was developed by combining correlating equations for pure free and pure forced convection. These component equations are based on laminar boundary‐layer theory for an isothermal, vertical plate. Theoretical values for assisting convection indicate that the third root of the sum of the third powers gives the best representation, as contrasted with the choice and rationalization of the second or fourth power by prior investigators.This expression was modified by the addition of a limiting valueNuoto obtain a better representation below the domain of boundary‐layer theory and was generalized for uniform heating and for spheres and horizontal cylinders by the appropriate choice of the characteristic length.