| 挟沙水流运动特性的探讨 |
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| 引用本文： | 陈德明,陈家扬. 挟沙水流运动特性的探讨[J]. 水利学报, 1996, 0(12) |
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| 作者姓名： | 陈德明 陈家扬 |
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| 作者单位： | 四川联合大学水利工程系 |
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| 摘 要： | 本文引用大气边界层的混掺长度表达式作为挟沙水流近壁区的混掺长度，从挟沙水流总切应力平衡方程导出了近壁区的流速分布公式，通过比较验证后推广到整个水深范围，进而使用该公式导出了挟沙水流主流区以上的混掺长度、动量交换系数和整个水深的垂向紊动强度公式，并由后者得到了垂向紊动强度增减的临界条件，前两者与水槽资料点绘的结果吻合良好．
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| 关 键 词： | 混掺长度，流速，动量交换系数，紊动强度 |
Study on some Rinematic characteristics of sediment laden flow |
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| Chen Deming, Chen Jiayang. Study on some Rinematic characteristics of sediment laden flow[J]. Journal of Hydraulic Engineering, 1996, 0(12) |
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| Authors: | Chen Deming Chen Jiayang |
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| Affiliation: | Sichuan Union University |
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| Abstract: | In this paper the sediment-ladened flow is regareded as a stratified flow in atmosphere due to temperature gradient and the concept of mixing length is adopted. Based on the shear stress balance equation the expression of velocity distribution in the vicinity of wall is deduced. By using this expression the mixing length, momentum exchange coefficient and turbulence intensity along the depth can be obtained. The results are in good agreement with the experimentat data. |
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| Keywords: | mixing length velocity distrbution momentum exchange coefficient turbulence intensity. |
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