恒热流竖壁层流降膜换热特性研究

Study of the Heat Transfer Characteristics of Laminar Falling Liquid Film along a Vertical Plate of Constant Heat Flux

将能量边界层积分法应用于恒热流竖壁层流降膜热发展段，求得了无量纲热发展段长度和包括热发展段及热定型段的平均换热系数表达式。进行了降膜破裂和换热的实际，理论和实验结果的比较证明本文的理论分析是可行的。

The energy boundary layer integral method is applied to the thermal developing region of laminar falling liquid film over a vertical plate of constant heat flux.Expressions for the dimensionless thermal developing region length and average dimensionless heat transfer coefficient for the entire domain including the thermal developing region and the thermal fully developed region are obtained.An experiment is made on film breakdown and heat transfer.The comparison between the theoretical and experimental results shows the validation of the theoretical analysis described herein.