圆形浸没射流冲击下有关压力梯度的理论分析

对圆形轴对称射流冲击下的轴向、径向压力梯度值进行了理论计算、就引射、局部换热系数径向分布峰值出现的位置及机理进行了分析、讨论，计算结果与浸没射流的实验结果符合较好，压力梯度的存在决定了浸滑射流的径向换热分布形状，而Ｒｅ数只是控制其换热的强弱。

Theoretical Analysis of Pressure Gradient under Impinging Submerged Round Jets

Axial and radial pressure gradient inside and outside submerged round jets are calculated. Obtained are the locations of two peaks in the radial direction and the local Nusselt number. The agreement between the analytical and experimental results is quite satisfactory. It can be concluded that the heat transfer distribution of submerged jets is controlled by pressure gradient, while the Reynolds number influences the magnitude.