Sediment Entrainment and Suspension in Complex Flows

复杂水流中的泥沙夹带和悬浮

• 批准号: 0120135
• 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: 2001
• 资助国家: 美国
• 起止时间: 2001-12-15 至 2006-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0120135&HistoricalAwards=false
• 关键词: Sediment; Entrainment; Suspension; Complex; Flows

AbstractCTS-0120135S. McLean, University of California Santa BarbaraThis is a renewal proposal of the Grant CTS-9634261 "Mechanism of sediment transport in complex flows" which ended in August 2001. In this Grant, the research is focused on the interaction mechanisms between the bed forms and the flow, and the processes by which the flow field moves the sediment grains as bedload or suspended load. The investigations were carried out by experiments in a flume and simple method of predicting sediment flux over a two-dimensional dune was developed. In the present proposal, the PI plans to investigate the processes governing how gradients in sediment flux give rise to changes in bed topography. More specifically, it is proposed to investigate five different types of flow with increasing complexity.

摘要CTS-0120135S。麦克莱恩，加州大学圣塔芭芭拉分校这是2001年8月结束的CTS-9634261“复杂流中沉积物输送机制”资助项目的更新提案。在这项资助中，研究的重点是床层形态和水流之间的相互作用机制，以及流场移动沉积物颗粒作为床质或悬浮负荷的过程。研究是通过水槽中的实验进行的，并开发了预测二维沙丘上沉积物通量的简单方法。在目前的提案中，PI 计划研究控制沉积物通量梯度如何引起河床地形变化的过程。更具体地说，建议研究复杂性不断增加的五种不同类型的流。