文献类型： 外文期刊

第一作者： Jin, HZ

作者： Jin, HZ;Yan, HJ;Cong, GH;He, JQ

作者机构：

关键词： center pivot;low pressure sprinkler;sprinkler spacing;uniformity coefficient

期刊名称：Land and Water Management: Decision Tools and Practices, Vols 1 and 2

ISSN：

年卷期： 2004 年

页码：

收录情况： SCI

摘要： One of the important objectives of center pivot hydraulic design is to determine a proper sprinkler spacing affecting water distribution uniformity and initial cost of equipment. Mathematical modes and computer software for calculating uniformity coefficient were developed in this paper. Via this computer program, measured typical single sprinkler with triangular and donut-shaped distribution patterns were used in an overlapping sequence with low pressure sprinkler spacings to simulate multiple sprinkler distribution patterns for center pivot systems. In order to meet a desired uniformity coefficient, the allowable range of sprinkler spacing for triangular pattern is greater than for donut-shaped pattern. Simulated uniformity coefficient compared well with field measured uniformity coefficient at a given spacing.

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