Sediment Entrainment and Suspension in Complex Flows

abstractcts - 0120135。这是2001年8月结束的补助金CTS-9634261“复杂水流中泥沙运移机制”的更新提案。本项目主要研究河床形态与水流之间的相互作用机制，以及流场将泥沙颗粒作为床载或悬载移动的过程。在水槽中进行了实验研究，并提出了二维沙丘上泥沙通量的简单预测方法。在目前的提议中，PI计划调查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，建议研究五种不同类型的流随着复杂性的增加。

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.