进行了一项实验,以确定压力损失的影响,组合间距,and.动态射流喷头的均匀系数。使用样条插值将径向水量转换为网格型数据,并使用各种压力条件来模拟洒水车方形和三角形组合下的三维水量分布。对于喷洒器的每个组合,实验在0.15、0.2、0.25和0.3MPa的操作压力下进行,分别。为了找到洒水喷头的最佳空间分布,三种不同的洒水间隔,1R,1.2R,和1.4R,对正方形和三角形组合进行了分析。对于每个操作压力,还使用ThiesClima激光降水监测器沿喷洒器的径向横断面测量了液滴尺寸分布。结果表明,随着压力从0.15MPa上升到0.3MPa,水滴轨迹曲线的倾斜角的平均值分别为60.78°和68.85°。当压力超过0.2MPa时,方阵组合的分布均匀系数为25%的低值和高值,均高于三角形组合。三角形组合系数的均匀性(CU)值最初降低,然后随着喷头间距的增加而增加,1.4R间距下的CU值达到73.85%。在1.2R的间隔,三角形组合的CU值比正方形组合低8.49%,这是一个显著的差异。方形组合的峰值灌溉值,当压力从0.1到0.3MPa变化时,分别为29.97、22.9、19.8、19.91和19.21mmh-1。在0.2、0.25和0.3MPa的CU值以0.07%的速率下降,1.36%,和0.8%,分别,当压力降低10%时。
An experiment was conducted to determine the effects of pressure loss, combined spacing, and. coefficients of uniformity on the dynamic fluidic sprinkler. Spline interpolation was used to convert the radial water volume into grid-type data and various pressure conditions were used to simulate the three-dimensional water distribution under square and triangular combinations of sprinklers. For each of the combinations of the sprinklers, experiments were performed at operating pressures of 0.15, 0.2, 0.25, and 0.3 MPa, respectively. To find the optimum spatial distribution of sprinklers, three different sprinkler intervals, 1R, 1.2R, and 1.4R, were performed for the square and triangular combinations. The
droplet size distributions were also measured along a radial transect from the sprinkler for each operational pressure using the Thies Clima Laser Precipitation Monitor. The results demonstrated that the average values of the inclination angles of the water
droplet trajectory curves were 60.78° and 68.85° as the pressure rose from 0.15 MPa to 0.3 MPa. When the pressure exceeds 0.2 MPa, the square combination\'s distribution uniformity coefficients of 25% low and high values were higher than those of the triangle combination. Triangular combination coefficients of uniformity (CU) values initially decreased and then increased as sprinkler spacing increased, with the CU value under 1.4R spacing reaching 73.85%. At a 1.2R interval, the CU value of a triangular combination was 8.49% lower than that of a square combination, which is a significant difference. Peak irrigation values for the square combination, when the pressure was changed from 0.1 to 0.3 MPa, were 29.97, 22.9, 19.8, 19.91, and 19.21 mm h-1, respectively. The CU values at 0.2, 0.25, and 0.3 MPa decreased at rates of 0.07%, 1.36%, and 0.8%, respectively, when the pressure was reduced by 10%.