李永冲,严海军,徐成波,肖建伟,李文颖.考虑水滴运动蒸发的喷灌水量分布模拟[J].农业机械学报,2013,44(7):127-132.
Li Yongchong,Yan Haijun,Xu Chengbo,Xiao Jianwei,Li Wenying.Simulation of Sprinkler Water Distribution with Droplet Dynamics and Evaporation[J].Transactions of the Chinese Society for Agricultural Machinery,2013,44(7):127-132.
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考虑水滴运动蒸发的喷灌水量分布模拟   [下载全文]
Simulation of Sprinkler Water Distribution with Droplet Dynamics and Evaporation   [Download Pdf][in English]
  
DOI:10.6041/j.issn.1000-1298.2013.07.022
中文关键词:  喷灌  水滴运动  蒸发飘移  水量分布  软件
基金项目:国家自然科学基金资助项目(51179191);国家高技术研究发展计划(863计划)资助项目(2011AA100506);水利部科技推广计划资助项目(TG1216)
作者单位
李永冲 中国农业大学 
严海军 中国农业大学 
徐成波 中国灌溉排水发展中心 
肖建伟 中国农业大学 
李文颖 中国农业大学 
中文摘要:提出了有风条件下喷头水滴运动与喷灌水量分布模拟方法,并利用Visual Basic 6.0开发了喷灌水量分布模拟软件。该软件在已知单喷头的径向水量分布数据时,可以模拟出不同风速、风向、空气温湿度等环境条件下单喷头或多喷头组合的喷灌水量分布,计算出喷灌系统的组合喷灌强度、喷灌均匀系数和蒸发损失率。以9708A型喷头为例,分别对工作压力为0.20、0.25和0.30MPa下单喷头径向水量分布以及喷灌系统组合间距为14m×14m和14m×12m时的喷灌水量分布进行了模拟,并与实测值进行了对比,结果表明:模拟的单喷头径向水量分布与实测值总体一致,由模拟水量分布推算的喷头流量与实测值的相对误差为0.83%~8.1%;喷灌均匀系数模拟值与实测值的相对误差为0.9%~6.6%,蒸发损失率模拟值为0.1%~1.5%,小于实测的水量损失率。模拟了不同组合间距下的喷灌水量分布,得到的喷灌均匀系数模拟值与其他软件比较,相对误差在0.1%~2.4%之间。
Li Yongchong  Yan Haijun  Xu Chengbo  Xiao Jianwei  Li Wenying
China Agricultural University;China Agricultural University;China Irrigation and Drainage Development Center;China Agricultural University;China Agricultural University
Key Words:Sprinkler irrigation  Droplet flight  Evaporation and drift  Water distribution  Software
Abstract:Based on the model of droplet dynamics and evaporation, the simulation method of droplet flight was put forward under the wind condition. Software of simulating sprinkler water distribution was developed by Visual Basic 6.0 With the radial water distribution data of single sprinkler, the software could simulate water distribution of single sprinkler or sprinkler irrigation system and calculate combined application rate, uniformity coefficient and evaporation loss rate of sprinkler irrigation system. Taking the sprinkler 9708A as example, radial water distribution of single sprinkler and water distribution of sprinkler irrigation system with the combined spacings of 14m × 14m and 14m × 12m were simulated and compared with the measured values under the pressures of 0.20, 0.25 and 0.30MPa. The results showed that the simulated values of radial water distribution of single sprinkler had the same tendency as the measured values on the whole, the relative error between simulated and measured values of flow rate ranging from 0.83% to 8.01%, that of the uniformity coefficient (Cu) ranging from 0.44% to 7.7%, and the simulated evaporation loss rate ranging from 0.51% to 1.75%. Several cases of sprinkler water distribution with different combined spacing were compared by using the developed software and other software. The relative error of the simulated values of Cu varied from 0.11% to 2.44%.

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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