| 新型微压侧翼迷宫滴灌带设计方法研究 |
| |
| 引用本文： | 王文娥,牛文全,胡笑涛. 新型微压侧翼迷宫滴灌带设计方法研究[J]. 灌溉排水学报, 2009, 0(4) |
| |
| 作者姓名： | 王文娥 牛文全 胡笑涛 |
| |
| 作者单位： | 西北农林科技大学水利与建筑工程学院; |
| |
| 基金项目： | 863计划重点项目(2006AA100208);;西北农林科技大学科研启动项目;;陕西省自然科学基金项目(SJ08E225) |
| |
| 摘 要： | 利用计算流体动力学(CFD)技术对设计的一种新型微压滴灌带的水力特性进行了数值模拟,得到了灌水器内部的压力和流速分布,预测了压力流量关系。研究结果表明:该滴灌带灌水器的流量系数为0.4858,说明流道内为全紊流状态,有利于灌水器的消能,并可提高其抗堵塞性;灌水器进口及出口的压力变化很小,流道内沿水流前进方向压力均匀下降,流道单元相同时,压力变化幅度相同;流道内的流速可分为流道齿尖附近的主流区及齿脚附近的旋流区二个区,每二个单元之间的速度分布基本一致。采用CFD技术进行微压滴灌带结构设计是一种新方法,可快速准确地获得灌水器的水力特性,为其结构设计提供理论指导,同时大大缩短了研制周期,降低开发成本。
|
| 关 键 词： | 滴灌带 水力特性 计算流体动力学 |
Design Method of New Style Low-pressure Drip Irrigation Belt with Labyrinth Channel |
| |
| WANG Wen-e,NIU Wen-quan,HU Xiao-tao. Design Method of New Style Low-pressure Drip Irrigation Belt with Labyrinth Channel[J]. Journal of Irrigation and Drainage, 2009, 0(4) |
| |
| Authors: | WANG Wen-e NIU Wen-quan HU Xiao-tao |
| |
| Affiliation: | College of Water Resources and Architectural Engineering;Northwest A & F University;Yangling 712100;China |
| |
| Abstract: | The computational fluid dynamics(CFD) approach was used to simulate the hydraulic characteristics for the new style irrigation belt with labyrinth channel.The velocity and pressure distributions in emitter flow field were obtained.The relation between head and flow rate was predicted.The result indicate that the flux coefficient of the irrigation belt is 0.4858 that means the flow in the channel is turbulence,and can improve the anti-clogging of the emitter.The pressures of inlet and outlet of the emitter c... |
| |
| Keywords: | drip irrigation belt hydraulic characteristics CFD |
| 本文献已被 CNKI 等数据库收录！ |
|
