单束园形浸没水射流冲击传热的实验研究

Experimental Study of Impingement Heat Transfer with Single Submerged Round Jets of Water

首次报导了单束园形浸没水射流冲击在竖直平板上局部热特性的实验结果。驻点传热同已有文献报导的自由射流的结果基本一致,可用本文中公式来关联。喷咀与传热面间距对驻点传热的影响也给出了计算予算公式。文中还给出了局部传热系数的经向分布,在高Re数下观察到了二次峰值的现象。

Experimental data were collected and correlated with sumberged round water jets.Local heat transfer characteristics were first reported under this condition.Stagnation point heat transfer rates are similar to those of free jets,its variation with Re number and nozzle-to-plate spacing can be predicted by correlations presented in present paper.Local heat transfer coefficient distributions were measured and correlated.Secondary peak of heat transfer coefficient was observed.