A two-directional calculation model for the combination uniformity coefficient of an impact sprinkler
| Autor: | Zhengdian Xu, Hong Li, Qingjiang Xiang, Cao Chen, Yue Jiang, Pan Tang |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Advances in Mechanical Engineering, Vol 14 (2022) |
| Druh dokumentu: | article |
| ISSN: | 1687-8140 16878132 |
| DOI: | 10.1177/16878132221081590 |
| Popis: | An impact sprinkler loaded on a remote control trailer can be used for motion to improve the efficiency of a single Hard Hose Traveler in small and medium-sized irregular fields. Herein, a model for calculating the combination uniformity coefficient (CU) was established in the square test area under two-directional motion. The accuracy of the irrigation uniformity model was verified using the test data of application depth ( h n ). The results revealed that the nozzle diameter, speed of sprinkler motion ( v ), and motion methods can significantly impact the average application depth ( h − ) and the CU value of sprinkler irrigation performance. The motion methods included uniform motion and a constant speed combination motion. The highest CU values were recorded when the primary and secondary nozzle diameters were 10.5 and 4.5 mm, respectively (overall value, about 81.7%). The CU value gradually decreased with the increasing v value of the sprinkler. The CU value was higher under the constant speed combination motion than the uniform motion. The h ¯ value gradually decreased with increasing v value. The h ¯ value was classified based on the water requirement of different crops. The optimal CU value corresponding to each grade of the h ¯ value was obtained in different schemes of the combination of sprinkler speeds. This research guides the realization of variable spraying of a Hard Hose Traveler and the intelligent uniform motion of the sprinklers. |
| Databáze: | Directory of Open Access Journals |
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