张以升,朱德兰,张 林,巩兴晖,杨 雯.折射式喷头喷灌强度及能量空间变化规律研究[J].农业机械学报,2015,46(7):85-90.
Zhang Yisheng,Zhu Delan,Zhang Lin,Gong Xinghui,Yang Wen.Spatial Variation of Application Rate and Droplet Kinetic Energy for Fixed Spray Plate Sprinkler[J].Transactions of the Chinese Society for Agricultural Machinery,2015,46(7):85-90.
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折射式喷头喷灌强度及能量空间变化规律研究   [下载全文]
Spatial Variation of Application Rate and Droplet Kinetic Energy for Fixed Spray Plate Sprinkler   [Download Pdf][in English]
投稿时间:2014-10-27  
DOI:10.6041/j.issn.1000-1298.2015.07.013
中文关键词:  折射式喷头 喷灌强度 能量 峰值 空间变化
基金项目:“十二五”国家科技支撑计划资助项目(2011BAD29B02)、国家工程技术研究中心再建资助项目(2011FU125Z27-1)、高等学校学科创新引智计划资助项目(B12007)和国家自然科学基金青年基金资助项目(51409244)
作者单位
张以升 西北农林科技大学 
朱德兰 西北农林科技大学 
张 林 西北农林科技大学 
巩兴晖 西北农林科技大学 
杨 雯 西北农林科技大学 
中文摘要:采用自计雨量筒、视频雨滴谱仪(2DVD)测得不同工作压力下Nelson D3000型蓝色喷盘、喷嘴直径4.76mm喷头的喷洒水量、喷灌水滴落地速度及粒径等指标,研究了不同压力下该喷头的水量、能量分布及其扩散规律,建立了不同工况下水量峰值、能量峰值与工作压力及喷灌高度的回归关系式。结果表明:增大喷头工作压力、升高喷头安装高度均有利于水量及能量的扩散;喷头的安装高度过低会导致较高的水量峰值和能量峰值,易产生地表径流,0.5m高度水量峰值变化范围为166.4~196.4mm/h,能量峰值变化范围为0.607~0.821W/m2。喷头水量峰值和能量峰值的计算式可为确定喷灌系统工作压力和喷头安装高度提供参考依据,避免因水量峰值和能量峰值过大而产生地表径流。
Zhang Yisheng  Zhu Delan  Zhang Lin  Gong Xinghui  Yang Wen
Northwest A&F University,Northwest A&F University,Northwest A&F University,Northwest A&F University and Northwest A&F University
Key Words:Fixed spray plate sprinkler Application rate Kinetic energy Peak value Spatial variation
Abstract:Data logging rain gauges and two-dimensional video disdrometer (2DVD) were applied to measure its water application rate, droplet diameter and velocity in radial direction of Nelson D3000 blue spray plate sprinkler with 4.76mm nozzle. The equations of peak application, peak kinetic energy rate about working pressure and mounting height were regressed based on the diffusion of water application and kinetic energy under different working conditions. The result indicates that the diffusion of water application rate and droplet kinetic energy are facilitated by increasing the working pressure and mounting height. This is due to that the jet flow speed is higher when the operating pressure increased, and with the air turbulence enhanced, it is easy to smash. The water drops to pieces. At the same time, the duration of landing increased when the mounting height is high. That seems to have the same effect. The low nozzle height which presents high peak application and kinetic energy rate leads to the generation of runoff. The peak water application and droplet kinetic energy rate varied from 166.4mm/h to 196.4mm/h, and 0.607W/m2 to 0.821W/m2 , respectively. The equation of peak rate can be helpful to design the working pressure and mounting height in sprinkler systems to prevent high peak application rate and kinetic energy rate which leading to occurrence of runoff.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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