Sediment Entrainment and Suspension in Complex Flows

摘要CTS-0120135S。加州大学圣巴巴拉分校麦克莱恩：这是2001年8月结束的9634261年度资助金CTS-9634261“复杂水流中的泥沙输运机制”的续期建议。本文主要研究床型与水流的相互作用机理，以及水流以推移质或悬移质形式运动泥沙的过程。在水槽中进行了试验研究，提出了预测二维沙丘泥沙通量的简单方法。在目前的提案中，PI计划调查控制泥沙通量梯度如何引起河床地形变化的过程。更具体地说，建议研究五种不同类型的流，这些流的复杂性越来越高。

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.