摘要
提出通过变圆心途径实现非圆形喷洒域喷头的构想 ,研究了实现这一构想的数学原理 ;以近似正方形喷洒域为重点 ,对水质点的运动轨迹和运动速度、喷灌强度和喷灌均匀度进行了计算机模拟和计算 ;提出了实现非圆形喷洒域的结构设想。结果表明 :运用双圆周复合运动可较简单地实现非圆形喷洒域 ;近似正方形喷洒域的点喷灌强度取决于喷头单向喷洒时的线喷灌强度函数。
The thesis poses realizing non circular spraying district by changing circle center and studies math principle of this imagination.The motion trace of drop of water,the motion velocity of drop of water,spraying intensity and spraying even degree have been imitated and calculated by computer.Structure imagination has been posed.The main conclusions are:1) realizing non circular spraying district can use bi circumference compound motion,2) sprinkler line spraying intensity of sprinkler single direction spraying decides the drop spraying intensity of approximate square spraying district.
出处
《西北农林科技大学学报(自然科学版)》
CSCD
北大核心
2003年第2期145-148,共4页
Journal of Northwest A&F University(Natural Science Edition)
关键词
非圆形喷洒域喷头
数学原理
喷灌技术
节水灌溉
spray irrigation
sprinkler
non circular spraying district
bi circumference compound motion