从大型实验室波浪泥沙输运实验得到的启示

INSIGHTS ON WAVE-GENERATED SAND TRANSPORT PROCESSES FROM LARGE-SCALE LABORATORY EXPERIMENTS

展示了一些用于测量波浪输沙过程的基本特征的大型实验的关键结果。这些实验是在Delft水力研究所的大型振荡水槽中进行,还有一些是在阿伯丁振荡流隧道中进行,这一系列实验覆盖了各种水流与泥沙条件。在紊流区和层流区的结果都在这里进行介绍,揭示出在每个实验中的一些重要机理。论述的重点是在波浪输沙中的内部不稳定性。

The paper presents some key results from large- scale laboratory experiments designed to measure fundarnental aspects of wave - generated sand transport processes. The experiments were carried out in the Large Oscillating Water Tunnel （LOWF） at Delft Hydraulics and in the Aberdeen Oscillatory Flow Tunnel （AOFT） at Aberdeen University, and cover a wide range of flow and sand conditions. Results from both the ripple regime and the sheet flow regime are presented, giving insights into the fundamental processes in each case. The inherent unsteadi- ness of wave - generated sand transport is highlighted.