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| 虚拟节点有限元法解析滴灌支管水力学计 | |
| 引用本文： | 张志新,王建东,李鑫,赵月芬.虚拟节点有限元法解析滴灌支管水力学计[J].农业机械学报,2009,40(3):99-102. |
| 作者姓名： | 张志新 王建东 李鑫 赵月芬 |
| 作者单位： | 1. 中国农业大学现代精细农业系统综合研究重点实验室,北京,100083 2. 中国水利水电科学研究院水利研究所,北京,100044 3. 北京市昌平区水务局,北京,102200 4. 北京地星规划设计院有限公司,北京,100080 |
| 基金项目： | 国家自然科学基金，国家重点基础研究发展规划(973计划) |
| 摘 要： | 滴灌支管和毛管组成的支管单元的水力学计算是滴灌管网水力学设计的关键环节.运用虚拟节点有限元法和虚拟节点平均水头损失有限元法解析支管单元的水力学计算,可以计算出支管和每根毛管的水头损失,同时显著减少计算量,研究结果为包含几十万乃至上百万个滴头的滴灌系统水力学设计提供了新的方法. |
| 关 键 词： | 滴灌 支管单元 有限元法 虚拟节点 水力学解析 |
Element Method for Hydraulic Design of Drip Irrigation Submain Units with Virtual Emitter System |
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| Zhang Zhixin,Wang Jiandong,Li Xin,Zhao Yuefen.Element Method for Hydraulic Design of Drip Irrigation Submain Units with Virtual Emitter System[J].Transactions of the Chinese Society of Agricultural Machinery,2009,40(3):99-102. | |
| Authors: | Zhang Zhixin Wang Jiandong Li Xin Zhao Yuefen |
| Institution: | 1.Key Laboratory of Modern Precision Agriculture System Integration Research;China Agricultural University;Beijing 100083;China 2.Department of Irrigation and Drainage;China Institute of Water Resources and Hydropower Research;Beijing 100044;China 3.Changping Water Resource Bureau;Beijing 102200;China 4.Beijing Land-star Planning & Design Institute;Beijing 100080;China |
| Abstract: | The hydraulic calculation of drip irrigation submain units plays a key role in the system design.The finite element method with virtual emitters can compute the head loss of each submain and capillary.The ways to reduce computational errors were suggested by selecting a certain amounts of elements in order to meet drip irrigation design need.Moreover,finite element method with virtual emitters can reduce computational work and memory demands dramatically.The research method put forward in this study provide... |
| Keywords: | Drip irrigation Submain unit Finite element method Virtual emitter Hydraulic analysis |
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