Comparison of droplet distributions from fluidic and impact sprinklers

doi:10.15302/J-FASE-2015049

Frontiers of Agricultural Science and Engineering

2015, Vol. 2

Issue (1): 53-59 https://doi.org/10.15302/J-FASE-2015049

本期目录

Comparison of droplet distributions from fluidic and impact sprinklers

Xingye ZHU¹,Shouqi YUAN^1,^*(

),Junping LIU²,Xingfa LIU²

1. National Engineering Research Center of Pumps and Pumping System, Jiangsu University, Zhenjiang 212013, China
2. Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China

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Abstract：

To adapt to the trend toward low-energy precision irrigation, the droplet distributions for two new prototype sprinklers, outside signal sprinkler (OS) and fluidic sprinkler (FS), were compared with impact sprinkler (IS). A laser precipitation monitor was used to measure the droplet distributions. Droplet size and velocity distributions were tested under four operating pressures for nozzles 1.5 m above the ground. For the operating pressures tested, the mean OS, FS and IS droplet diameters ranged from 0 to 3.4, 0 to 3.5, 0 to 4.0 mm, respectively. The mean OS and FS droplet velocities ranged from 0 to 6.3 m·s^-1, whereas IS ranged from 0 to 6.3 m·s^-1. Being gas-liquid fluidic sprinklers, droplet distributions of the OS and FS were similar, although not identical. IS mostly produced a 0.5 mm larger droplet diameter and a 0.5 m·s^-1 greater velocity than OS and FS. A new empirical equation is proposed for determination of droplet size for OS and FS, which is sufficiently accurate and simple to use. Basic statistics for droplet size and velocity were performed on data obtained by the photographic methods. The mean droplet diameter (arithmetic, volumetric and median) decreased and the mean velocity increased in operating pressure for the three types of sprinkler.

Key words： outside signal sprinkler fluidic sprinkler impact sprinkler sprinkler irrigation droplet size droplet velocity

收稿日期: 2015-02-03 出版日期: 2015-05-22

Corresponding Author(s): Shouqi YUAN

引用本文:

. [J]. Frontiers of Agricultural Science and Engineering, 2015, 2(1): 53-59.
Xingye ZHU,Shouqi YUAN,Junping LIU,Xingfa LIU. Comparison of droplet distributions from fluidic and impact sprinklers. Front. Agr. Sci. Eng. , 2015, 2(1): 53-59.

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https://academic.hep.com.cn/fase/CN/10.15302/J-FASE-2015049
https://academic.hep.com.cn/fase/CN/Y2015/V2/I1/53

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