| 挟沙水流的混掺长度初探 |
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| 引用本文： | 陈德明,陈家扬.挟沙水流的混掺长度初探[J].四川大学学报(工程科学版),1995(4). |
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| 作者姓名： | 陈德明 陈家扬 |
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| 作者单位： | 长江科学院河流所，成都科技大学高速水力学国家重点实验室 |
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| 摘 要： | 本文将挟沙水流近壁区视为由浓度梯度造成的层结流体，与大气边界层非中性平衡条件下温度梯度造成的层结流体相比拟．引入大气边界层的混掺长度作为挟沙水流近壁区的混掺长度．进而在从总切应力平衡式导出的流速梯度基础上，推导出挟沙水流沿整个水深的混掺长度公式，水槽资料证明了该公式的正确性以及挟沙水流近壁区与大气边界层的相似性．
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| 关 键 词： | 挟沙水流，层结流体，流速，混掺长度 |
Study on the Mixing-length of Sediment-laden Flow |
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| ChenDeming Chen Jiayng.Study on the Mixing-length of Sediment-laden Flow[J].Journal of Sichuan University (Engineering Science Edition),1995(4). |
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| Authors: | ChenDeming Chen Jiayng |
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| Affiliation: | ChenDeming Chen Jiayng |
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| Abstract: | The paper regards the sediment-laden flow near the bed as a stratification flow resulting from concentration gradient,and analogizes the atmospheric stratification flow caused by temperature gradient.Citing the mixing-length of stratification flow.the paper has deduced the velocity of sediment-laden flow based on the equation of total tress force,then,the paper has deduced the mixing-length formula of sediment-laden flow.Flume materia shows the validity of the formula and the analogy of the sediment ladenflow to atmospheric stratification flow. |
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| Keywords: | sediment-laden stratification flow velocity mixing-length |
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