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An Investigation on the Down-Rushing Flow on a Seadike
|摘要:||當波浪作用於海堤時, 在堤面發生溯升現象後, 水體沿堤面迴流下刷 ,
The down-rushing flow to the toe of a seadike is thought to be the main cause of the scouring of the sand bed at its front. This study is aimed to investigate the characteristics of the flow by means of model experiments in a wave flume , associating with the technique of the flow visualization. The range of the incident wave condition which can produce the down-rushing flow to the toe is firstly investigated , then the intensity of the flow is measured. It is found that the case of the steeper slope has wider range of the incident wave condition to produce down-rushing flow to the toe. The intensity of the down-rushing flow of the milder slope is weaker then that of the steeper slope. The dimensionless values of the maximum flow velocity and its pressure on the toe are increasing with the relative height of the wave run-up.
|Appears in Collections:||土木工程學系所|
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