Abstract：In order to improve pulse characteristics of capillary jet tee, 25 sets of capillary jet tee mo-dels were designed by using the method of orthogonal design of experiments in the paper. In the designs, six geometrical factors, namely, nozzle width, nozzle depth, control tube width, position difference, laying length and side wall angle, were selected and 5 levels were specified for each factor. 25 jet tee models were simulated with CFX software. Pulse frequency, head amplitude and pressure diffe-rence were selected as experimental evaluation indexes. The influence of structural parameters on pulse characteristics was analyzed by the range method, and the rank of factors was determined. The statistics significance of the influencing factors was analyzed by using the variance method, and the optimal structure model was determined. Based on the experimental results, at the inlet pressure of 50 to 120 kPa, the pulse frequency of the optimal model was increased by 3 to 10 times/min compared with the 4 mm nozzle width jet tee, the head amplitude was enhanced by 3.2 to 11.1 kPa and the uniformity coefficient of irrigation was better by 0.53% to 1.94%, the flow deviation rate was reduced by 0.81% to 5.33%. The optimized jet tee model can provide continuous and stable pulsed water flow; thus, the pulse performance has been enhanced greatly, which can improve the uniformity of irrigation effectively.
王轩,王新坤*,樊二东,徐胜荣,薛子龙,张晨曦,丁师伟. 毛管射流三通结构参数优化与试验验证[J]. 排灌机械工程学报, 2020, 38(9): 966-972.
WANG Xuan,WANG Xinkun*,FAN Erdong,XU Shengrong,XUE Zilong,ZHANG Chenxi,DING Shiwei. Optimization of structural parameters of capillary jet tee and experimental validation. Journal of Drainage and Irrigation Machinery Engin, 2020, 38(9): 966-972.