| 动床沙粒阻力与底沙输移 |
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| 引用本文： | 陈国祥,杨永荻.动床沙粒阻力与底沙输移[J].河海大学学报(自然科学版),1989(4). |
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| 作者姓名： | 陈国祥 杨永荻 |
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| 作者单位： | 河海大学水资源水文系 |
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| 摘 要： | 本文在输沙实验的基础上,从研究水流结构着手,分析了水流和泥沙之间的相互作用关系,讨论了动床沙粒阻力和底沙输移规律.结果表明,动床沙粒阻力与输沙有关.本文还导得动平床情况下的流速分布公式、阻力公式和输沙率公式,使动床的水流运动和输沙过程得以联解.通过295组水槽实测资料详尽的验证,证明本文结果与实测资料是一致的.
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| 关 键 词： | 动床 沙粒阻力 流速分布 底沙 输沙率 两相流 |
Grain Resistance and Bed Load Movement on Plane Movable Bed |
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| Chen Guoxiang, Yang Yongdi.Grain Resistance and Bed Load Movement on Plane Movable Bed[J].Journal of Hohai University (Natural Sciences ),1989(4). |
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| Authors: | Chen Guoxiang Yang Yongdi |
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| Affiliation: | Chen Guoxiang; Yang Yongdi |
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| Abstract: | Based on sediment transport experiments, the interaction between flow and sediment movement is analysed and the problems of grain resistance and bed load transport on plane movable bed are discussed. It is shown that the grain resistance is closely related to the bed load transport rate. The formulas of velocity distribution, flow resistance and bed load transport rate are obtained, in which the flow and sediment movement are considered simultaneously. The formulas obtained are varified by 295 sets of flume data and the agreement is good. |
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| Keywords: | movable bed grain resistance velocity distribution bed load sediment transport rate two-phase flow |
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