农业机械学报2013，Vol.44Issue(7)：127-132,6.DOI:10.6041/j.issn.1000-1298.2013.07.022
考虑水滴运动蒸发的喷灌水量分布模拟
Simulation of Sprinkler Water Distribution with Droplet Dynamics and Evaporation
摘要
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 14 m × 14 m and 14 m x 12 m were simulated and compared with the measured values under the pressures of 0.20,0.25 and 0.30 MPa.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 7.77％,and the simulated evaporation loss rate ranging from O.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％.关键词
喷灌/水滴运动/蒸发飘移/水量分布/软件Key words
Sprinkler irrigation/Droplet flight/Evaporation and drift/Water distribution/Software分类
农业科技引用本文复制引用
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):127-132,6.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)和水利部科技推广计划资助项目(TG1216) （51179191）
