| 侵蚀性坡面流流态的试验研究 |
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| 引用本文： | 敬向锋,吕宏兴,潘成忠,雒天峰. 侵蚀性坡面流流态的试验研究[J]. 灌溉排水学报, 2008, 27(2): 82-85 |
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| 作者姓名： | 敬向锋 吕宏兴 潘成忠 雒天峰 |
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| 作者单位： | 西北农林科技大学,水利与建筑工程学院,陕西,杨凌,712100;中国科学院水利部水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100;中国科学院水利部水土保持研究所,黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西,杨凌,712100;甘肃省水利科学研究院,兰州,730000 |
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| 摘 要： | 通过定床阻力试验,从水力学原理出发,对3种不同坡度(坡度分别为:5°、10°、15°)有机玻璃床面和人工粗糙床面(床面粘贴砂粒粒径分别为:0.5～1、1～2、2～5、5～10mm)的侵蚀性坡面流试验数据进行分析,研究了侵蚀性坡面流流态,得出了侵蚀性坡面流存在"虚拟层流"、过渡流和紊流3种流态形式,通过试验分析了"虚拟层流"具有悬移输沙能力的原因。
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| 关 键 词： | 坡面流 流态 雷诺数 虚拟层流 过渡流 紊流 |
| 文章编号： | 1672-3317(2008)02-0082-04 |
| 修稿时间： | 2007-02-07 |
Experimental Study on Flow Pattern of Erosive Overland Flow |
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| JING Xiang-feng,LV Hong-xing,PAN Cheng-zhong,LUO Tian-feng. Experimental Study on Flow Pattern of Erosive Overland Flow[J]. Journal of Irrigation and Drainage, 2008, 27(2): 82-85 |
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| Authors: | JING Xiang-feng LV Hong-xing PAN Cheng-zhong LUO Tian-feng |
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| Affiliation: | JING Xiang-feng1,2,LV Hong-xing1,PAN Cheng-zhong2,LUO Tian-feng3(1.College of Water Resources , Architectural Engineering,Northwest A & F University,Yangling 712100,China,2.The State Key Laboratory of Soil Erosion , Dry l, Farming on the Loess Plateau,Institute of Soil , Water Conservation,Chinese Academy of Sciences , Ministry of Water Resources,3.Institute of Water Resources of Gansu Province,Lanzhou 730000,China) |
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| Abstract: | Through the fixed-bed resistance test and from the principles of hydraulics,the erosive overland flow testing data of organic glass slippery bed and artificial rough bed(grain size of bed sticky sediment is 0.5~1 millimiter,1~5 millimeter,2~5 millimeter,5~10 millimeter)with three kinds of gradient(gradient is:5°,10°,15°)under the condition are analyzed,and the flow pattern of erosive overland flow is researched.The results show erosive overland flow have virtual laminar flow,transitional flow and turbulent flow three kinds of flow pattern.The reason that virtual laminar flow had movement sediment transport capacity was explained. |
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| Keywords: | erosive overland flow flow pattern Reynolds number virtual laminar flow transitional flow turbulent flow |
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