Dynamics of Flow-Sediment Interaction

水流-泥沙相互作用的动力学

• 批准号: 9217804
• 负责人: Stephen McLean
• 金额: --
• 依托单位: University of California-Santa Barbara
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-05-01 至 1997-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9217804&HistoricalAwards=false
• 关键词: Dynamics; Flow; Sediment; Interaction

A combined experimental and modeling approach will be utilized in an investigation of sediment transport and flow characteristics over topographically uniform and nonuniform bed forms. Three areas will be addressed: bedform mechanics, bedload transport, and suspended load transport. The theoretical aspects involve development of a model which includes the coupling of flow and erosion of the sediment bed. A novel feature is the utilization of a moving belt to hold a migrating dune in place for experimental observations. Predictions of sediment transport by ocean currents and in rivers is still unreliable and based on empiricism from limited data; this investigation will adavance understanding and predictive capabilities.

将采用试验和模拟相结合的方法，研究地形均匀和不均匀床面上的泥沙输移和水流特性。三个领域将被解决：底形力学，推移质运输和悬移质运输。理论方面涉及发展的模型，其中包括耦合的流动和侵蚀的沉积床。一个新的特点是利用一个移动的带举行迁移沙丘在实验观察的地方。海流和河流的泥沙输运预测仍然是不可靠的，并且是基于有限数据的经验主义;这项调查将促进理解和预测能力。