circular nozzle

In order to improve the spray coverage in canopy,to reduce the loss of pesticide out of the tree,and reduce the effect of pesticde spray on the environment,the target-detecting spray experiments were conducted for two hollow cone nozzles horzontalled to study the effcets of the spray pressure and the travel speed on the solution distribution.

为实现果树农药精确喷雾,减小农药在果树以外的沉积损失,降低果树农药喷雾对环境的影响,采用喷雾试验台对果树对靶喷雾中水平安放的空圆锥型喷嘴的喷雾药液沉积分布进行试验研究。

The flowing characteristics of jet through array of round nozzle in impingment heat transfer was investigated by numerical simulation.

本文首次利用数值模拟的方法对喷流换热中一组圆喷嘴射流的流动特性进行了研究，得出了有用的结论并进行了实验验证。