Study on the Emission Uniformity for the Emitter under the Condition of Farmland Micro-terrain Action
ZHU De-lan, WU Pu-te, ZHANG Qin-feng, NIU Wen-quan, YANG Wen-hui
ISWC, Chinese Academy of Sciences and Ministry of Water Resources; Northwest Sci-tech University of A &F; National Engine Research Center of Water Saving-irrigation for Yang-Ling, Shanxi 712100, China, Water Conservancy Department of Baoji, Baoji 721300, China; Jin Tai Area Hydraulic Office in Baoji, Baoji 721300, China
Abstract：The calculation formulas of the dripper flow variation rate, flow deviation coefficient and the emission uniformity for the emitter were analyzed in drip irrigation system. They are affected by farmland micro-terrain deviation, hydraulic deviation for the emitter and manufacture deviation for the emitter. The micro-terrain and manufacture coefficient, which accorded with the random of positive state distribution are imitated by computer program. The dripper flow variation rate, flow deviation coefficient and the emission uniformity for the emitter are calculated by using computer program under the four conditions. And the formula of the emission uniformity for the emitter and the relation of various uniformity parameters are proposed by statistic analysis of 500 groups data, which could be used to the hydraulic calculation of the drip system designs.
朱德兰；吴普特；张青峰；牛文全；杨文辉. 微地形影响下滴灌均匀度设计指标研究[J]. 排灌机械工程学报, 2006, 24(1): 22-26.
ZHU De-lan, WU Pu-te, ZHANG Qin-feng, NIU Wen-quan, YANG Wen-hui. Study on the Emission Uniformity for the Emitter under the Condition of Farmland Micro-terrain Action. Journal of Drainage and Irrigation Machinery Engin, 2006, 24(1): 22-26.
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