| 刘青泉,曹文洪.泥沙颗粒的扬动机理分析[J].水利学报,1998,29(5):0001-0007 |
| 泥沙颗粒的扬动机理分析 |
| On the mechanism of winnowing of sediment particles |
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| DOI： |
| 中文关键词: 泥沙颗粒 无规则运动 跃移 紊动猝发 扬动 |
| 英文关键词: sediment particles irregular motion saltation turbulent bursting winnowing |
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| 中文摘要: |
| 本文从分析床面附近泥沙颗粒的运动特征出发，较细致地论述了沙粒在水流中从推移运动到扬起悬浮的物理过程，根据水槽试验的基本现象，讨论了过去一些理论中存在的问题和不足，概括了泥沙颗粒在水流中从床面扬起的基本模式，从二相流角度出发，分析了沙粒在水流中扬起的动力学机理。 |
| 英文摘要: |
| In this paper, a systematic study on the process of sediment particles being winnowed in water flow from river bed is carried out. Some questions that exist in traditional theories are discussed. Based on a new mechanics idea, the mechanism of the winnowing of the sediment particles is analyzed in detail. |
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