| 挟沙水流泥沙浓度分布的试验研究 |
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| 引用本文： | 叶小云,陈立,吴门伍. 挟沙水流泥沙浓度分布的试验研究[J]. 泥沙研究, 2003, 12(4): 36-40 |
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| 作者姓名： | 叶小云 陈立 吴门伍 |
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| 作者单位： | 武汉大学,水资源与水电工程科学国家重点实验室,湖北,武汉,430072 |
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| 基金项目： | 国家自然科学基金项目 ( 5 0 0 790 18)，霍英东青年教师基金项目 ( 710 70 )，教育部骨干教师资助计划项目资助 |
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| 摘 要： | 通过挟沙水流泥沙浓度分布的试验，研究泥沙浓度和紊动强度沿垂线的分布之间的内在联系，试验结果表明泥沙浓度和紊动强度沿垂线的分布一致性较好，建立了泥沙浓度和紊动强度沿垂线分布之间的关系式。分析了关系式中泥沙浓度、泥沙的中值粒径对系数K的影响，中值粒径的影响较泥沙浓度对系数K的影响大，系数K随中值粒径的减小明显减小。并在此基础上进一步建立了泥沙浓度与流速、流速梯度之间的关系式。
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| 关 键 词： | 挟沙水流 泥沙浓度分布 紊动强度 MicroADV |
| 文章编号： | 0468-155X(2003)04-0036-05 |
| 修稿时间： | 2002-02-01 |
Experimental Study on the Distribution of Sediment Concentration in the Sediment-laden Flow |
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| YE Xiao yun,CHEN Li,WU Men wu. Experimental Study on the Distribution of Sediment Concentration in the Sediment-laden Flow[J]. Journal of Sediment Research, 2003, 12(4): 36-40 |
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| Authors: | YE Xiao yun CHEN Li WU Men wu |
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| Abstract: | Based on the flume experiments, the quantitative relationship between the vertical distribution of sediment concentration in the sediment|laden flow with the turbulence intensity has been established. Then the effects of the factors such as the max sediment concentration S max and the median diameter of particles on the relationship between turbulent intensity and the sediment concentration have been analyzed. The results indicate that the median diameter of particles plays a more important role than the max sediment concentration S max in affecting the coefficient K. The coefficient K decreases with the increasing of median diameter of particles. Additionally, the quantitative relationship between the sediment concentration and the velocity and its gradient has been established. |
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| Keywords: | sediment laden flow sediment concentration turbulence intensity MicroADV |
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