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| 滴头设计工作压力计算方法研究 | |
| 引用本文： | 朱德兰,吴普特,王艳群,杨文辉,强小茜.滴头设计工作压力计算方法研究[J].排灌机械,2005,23(5):31-34. |
| 作者姓名： | 朱德兰 吴普特 王艳群 杨文辉 强小茜 |
| 作者单位： | 1. 西北农林科技大学,陕西,杨凌,712100 2. 宝鸡市陈仓区水电局,陕西,宝鸡,721300 3. 宝鸡市金台区水利局,陕西,宝鸡,721300 4. 咸阳市设计院,陕西,咸阳,712000 |
| 基金项目： | 农业科技成果转化项目（04EFN217100395）;国家“十五”科技攻关项目（2001BA508B20） |
| 摘 要： | 以Powell方向加速法作为优化手段,用两级优化法对滴头设计工作压力的取值问题进行了研究,利用Powell法进行二元函数最优化,得到非标准的毛管直径和滴头设计工作压力;选择具有标准管径的毛管,使标准管径不小于初步优化得到的管径、毛管耐压不小于初步计算的毛管实际最大水压力,以滴头设计工作压力为决策变量,用外部罚函数法将不等式约束变为无约束问题,利用Powell法进行一元函数最优化,得到可直接用于实际滴灌工程中的滴头设计工作压力值. |
| 关 键 词： | 滴灌 滴头设计工作压力 流量偏差率 Powell优化法 罚函数法 |
| 文章编号： | 1005-6254（2005）05-0031-04 |
Study on the Calculation Method of Operation Pressure of Emitters |
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| ZHU De-lan,WU Pu-te,WANG Yan-qun,YANG Wen-hui,QiANG Xiao-qjian.Study on the Calculation Method of Operation Pressure of Emitters[J].Drainage and Irrigation Machinery,2005,23(5):31-34. | |
| Authors: | ZHU De-lan WU Pu-te WANG Yan-qun YANG Wen-hui QiANG Xiao-qjian |
| Institution: | 1. Northwest Sci-tech University of Agriculture and Forestry, Yanglin, 712100, China; 2, ChenCang Area Hydraulic and Electronic Office in BaoJi City, BaoJi, 721300, China; 3. Jin Tai Area Hydraulic Office in BaoJi City, BaoJi, China, 721300; 4. Hydraulic Design Academy in XianYang City, XianYang, 712000, China |
| Abstract: | The dripper design operation pressure is determined by two grades optimal method and Powell optimal method. First of all, diameter of lateral and the dripper design operation pressure are viewed as deciding variable and diameter of lateral and the dripper design operation pressure are computed by Powell optimal method. Then, lateral with standard diameter which was not below to original optimal diameter and limited pressure is not below to original optimal maximum pressure is selected. The dripper design operation pressure, which could be applied to drip irrigation design, is determined. |
| Keywords: | Drip irrigation The dripper design operation pressure The flow variation rate Powell optimal method Punitive function method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |