开孔率对多孔管压力水头分布规律的影响分析  

Porosity Analysis of Influence on Pressure Head Distribution of Porous Tube

作　　者：王凌[1] 刘焕芳[1] 杜涛[1] 

机构地区：[1]石河子大学水利建筑工程学院,新疆石河子832000

出　　处：《人民黄河》2015年第5期97-98,102,共3页Yellow River

基　　金：国家自然科学基金资助项目(11362019)

摘　　要：多孔管的压力水头分布规律是多孔管水力性能的重要研究方向之一。通过采用室内试验与理论分析相结合的方法,研究了在平坡条件下,开孔率对多孔管压力水头分布规律的影响情况。试验结果显示:在平坡条件下,多孔管沿程压力水头的变化范围随着开孔率的增大而增大,多孔管的末端压力水头随着开孔率的增大而减小。利用水力学有关知识,采用达西-威斯巴赫公式,经过理论分析发现,当孔间距变化引起开孔率增大时,多孔管的沿程压力水头是减小的。经过分析证明,试验结果与理论分析结果一致。The distribution of pressure head of porous tube is one of the important research directions of hydraulic properties of porous tube. Through the combined method of using laboratory experiments and theoretical analysis, the paper was researched the influence of porosity in the flat slope conditions on pressure distribution of a porous tube. The test results show that in the flat slope conditions, the range of porous tube on pressure head increases with the increasing of porosity, the end pressure head of porous tube decreases with the increasing of porosity. By using hydraulics related knowledge, Darcy -Weisbach formula, through theoretical analysis, it was found that when the distance between holes caused by the change of porosity increases, porous tube pressure head was reduced. After analyzing and proving the test results and theoretical analysis results, it shows that the results are consistent with the conclusions. This conclusion can be used to guide the application of porous tube in industrial and agricultural production.

关 键 词：开孔率 多孔管 压力水头 

分 类 号：TV732.4[水利工程—水利水电工程]