| 突然缩小圆管局部水头损失系数试验研究 |
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| 引用本文： | 李栋浩,王文娥,葛茂生,余坤.突然缩小圆管局部水头损失系数试验研究[J].水利与建筑工程学报,2011,9(4):22-24. |
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| 作者姓名： | 李栋浩 王文娥 葛茂生 余坤 |
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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 |
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| 基金项目： | 863计划(2010AA10A302); 西北农林科技大学大学生创新项目 |
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| 摘 要： | 管网布置及设计中,局部损失的计算非常重要,但由于其影响因素多,目前常采用经验值简化计算,误差较大。突然缩小圆管是一种常见的管道连接方式,对其局部阻力系数影响因素进行试验研究具有重要的意义。通过对一定水头时不同突缩比塑料圆管的局部水头损失试验,测定了管道的流量、水温、测压管水头,分析研究了局部阻力系数与流速、管径及温度之...
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| 关 键 词： | 突然缩小圆管 局部阻力系数 雷诺数 突缩比 |
Study on Local Drag Parameter of Subcontract Tube |
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| LI Dong-hao,WANG Wen-e,GE Mao-sheng,YU kun.Study on Local Drag Parameter of Subcontract Tube[J].Journal of Water Resources Architectural Engineering,2011,9(4):22-24. |
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| Authors: | LI Dong-hao WANG Wen-e GE Mao-sheng YU kun |
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| Affiliation: | LI Dong-hao,WANG Wen-e,GE Mao-sheng,YU kun(College of Water Resources and Architectural Engineering,Northwest A & F University,Yangling,Shaanxi 712100,China) |
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| Abstract: | The calculation for partial loss is very important in the layout and design of a pipe systerm.However the empirical coefficient method is inaccurate when it is applied to the calculation,because there are many factors which could affect the results.Subcontract tube is a common pipe connection way,it is significant to analyze the factors influencing local resistance coefficient.Under the same working head,the flow,water temperature and hydrostatic pressures at several special positions along the pipe are mea... |
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| Keywords: | subcontract tube local drag parameter Reynolds number subcontract ratio |
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