中文摘要：

为了深入探索国内原创旋转式射流喷头结构参数与喷洒均匀性之间的关系，选用10型喷头为研究对象，在工作压力为300 kPa下测量出9种不同位差H、作用区长度L、收缩角θ的喷嘴的径向水量分布。采用Matlab语言编制程序绘制出正方形布置其组合间距为8，9，10，11，12和13 m喷嘴的三维水量分布图，并对组合均匀性系数进行了仿真计算。结果表明：旋转式射流喷头的水量分布同时受到位差×作用区长度（H×L）、收缩角θ等结构参数的影响，当位差×作用区长度（H×L）、收缩角θ增大时，距喷头近处水会更多，远处水会更少；当位差×作用区长度（H×L）=2.4 mm×20 mm和2.6 mm×24 mm时，组合喷洒均匀性系数的数值以及它随组合间距的变化趋势都很接近，位差×作用区长度（H×L）=2.8mm×28 mm喷嘴的组合均匀性系数变化趋势更加平稳；组合间距为8～10 m时，不同θ的组合均匀性系数相差在2%以内；组合间距为10 m以上时，组合均匀性系数随着θ的增大而增加。对于9种试验喷嘴，组合均匀性系数均随着组合间距的增加而降低，初步提出了旋转式射流喷头在正方形布置时最佳组合间距为10～12 m，为其在工程应用中提供理论数据。

英文摘要：

The rotational fluidic sprinkler was originally developed in China based on the theory of fluidic wall-attachment effect. To explore the relationships between geometrical parameters and spraying uniformity, the rotational fluidic sprinkler typed 10 was chosen as an object. Nine kinds of different offset length H, working area length L and contraction angle θ were specially fabricated. The parameter of H×L was 2.4 mm×20 mm, 2.6 mm ×24 mm or 2.8 mm×28 mm, and the θ was 10, 30, or 50 degrees. The laboratory conditions were set up in Jiangsu University of China. The catch-cans, which are 0.2 m in diameter and 0.6 m in height, were displayed in radial. The interval space was 1 m between any two of them and the number of used catch-cans was twelve in total. Experiments were carried out under the operating pressure of 300 kPa and the radial water distributions for the nine different nozzles were tested out. For the reason that every tested radial value represented different covered area, a mathematical model was established to transfer radial data into grid data. Therefore, the overlapped grid data in combined irrigation can be added directly to calculate out the combined uniformity coefficient. Rectangular layout and combined spacing with 8, 9, 10, 11, 12 and 13 m were chosen to analysis. A program was established using Matlab to draw three-dimensional water distribution and to calculate out the combined uniformity coefficient. The results showed that the average rotational time per circle was about 20 seconds. The water distribution was both affected by H×L and θ. With the increasing of H×L or θ, more irrigation intensity near the sprinkler and less irrigation intensity far from the sprinkler. Taking the nozzle where θ was 30 degrees, H×L was 2.6×24 mm and the combined spacing was 10 m as an example, the water distribution was relative equal all around the covered area, the combined irrigation intensity was between 1.5 to 6 mm per hour, and the highest irrigation intensity was 6 mm per hour in the middle