EconPapers    
Economics at your fingertips  
 

Analysis of kinetic energy distribution of big gun sprinkler applied to continuous moving hose-drawn traveler

Maosheng Ge, Pute Wu, Delan Zhu and Lin Zhang

Agricultural Water Management, 2018, vol. 201, issue C, 118-132

Abstract: Kinetic energy of droplets from big gun sprinklers relates closely to the infiltration process and soil erosion, as well as severely affects the energy consumption of hose-drawn travelers. However, research work related to the kinetic energy distribution of big gun sprinklers is seldom performed. In this study, The radial water application distribution, droplet size distribution, and droplet velocity distribution of a big gun sprinkler were measured. Based on the experimental data, a calculation method was developed to determine the kinetic energy of big gun sprinkler under stationary and moving states. Volume weighted mean particle size and the corresponding equivalent landing velocity were adopted as the feature size and velocity of the point located at any distance from the sprinkler. The droplets’ landing velocities present a logarithmic relationship with droplet size and velocities rise with the increase of droplet size. The operating pressure should not be lower than 0.2 MPa since the peak value of specific power will rise rapidly below this operating pressure. For positions receiving the same kinetic energy, obvious difference may exist in the amount of water and the dynamic process curves of specific power. With the increase in travel speed of the hose-drawn traveler, both the cumulative kinetic energy and the irrigation duration decrease proportionally. Compared to the spray plate sprinklers applied to center pivots, the big gun sprinkler shows a milder precipitation process, but the water application lasts longer and carries more kinetic energy, reaching 2- 4 times for the same amount of water. The infiltration rate of each location decreases linearly along with an increase in distance to the travel lane, and the infiltration rate decreases to approximately 20 mm/h at the end of the spraying area.

Keywords: High volume sprinkler; Specific power; Radial distribution; Cumulative kinetic energy; Working condition (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0378377417304006
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:201:y:2018:i:c:p:118-132

DOI: 10.1016/j.agwat.2017.12.009

Access Statistics for this article

Agricultural Water Management is currently edited by B.E. Clothier, W. Dierickx, J. Oster and D. Wichelns

More articles in Agricultural Water Management from Elsevier
Bibliographic data for series maintained by Catherine Liu ().

 
Page updated 2025-03-19
Handle: RePEc:eee:agiwat:v:201:y:2018:i:c:p:118-132