摘要
喷灌系统组合均匀度是规划设计时的重要技术参数。在无风或微风条件下，可通过室外组合喷洒试验或依据单喷头试验资料用计算方法求得。在有风条件下，目前普遍采用的是以大量观测数据为基础的统计方法，由于试验条件、手段所限以及风的多变性，不但试验结果再现性差、且很难比较精确地求得某些特征风速（如灌溉期间的平均风速、设计风速）下的均匀度。本文提出了一种计算有风条件下喷灌系统组合均匀度的方法，经与实测值比较，表明具有较高精度。
The compound uniformity is a key parameter in the design of sprinkler irrigation system. Under windless condition or in gentle breeze, it can be calculated either through outside compound sprinkler tests or with experimental data from single sprinkler test. Under wind condition, the compound uniformity is normally obtained by statistical methods, which require a greal deal of experimental data. However, limited by test conditions and methods and because of the variation in wind, test results are hard to duplicate and the accuracy of the uniformity in some typical velocity, includding the average wind velocity and the design wind velocity, is unsatisfactory. In this paper,a modified method to calculate the compound uniformity, proved to show improved accuracy, is presented.
出处
《灌溉排水》
CSCD
1995年第1期12-18,共7页
Irrigation and Drainage
基金
水利科学基金
关键词
有风条件
喷灌
均匀度
计算
Under wind condition Sprinkler irrigation Uniformity Method of calculation.
