Wave boundary layer flows and pore pressures in permeable beds

H. H. Hwung, K. S. Hwang, B. H. Lee

研究成果: Conference article

3 引文 斯高帕斯(Scopus)

摘要

The boundary layer flows and wave-induced pore pressures inside porous beds are both investigated in wave tank. Two kinds of porous beds are composed of two different grades of quartz sands which the porosities are 0.437 and 0.472 respectively. According to the experimental results, it is found that the larger pore pressure in permeable bed is induced by the longer wave period, and the pore pressure has an exponential attenuation with the wave steepness increasing. From the elaborate measurements in the boundary layer, the overshooting induced by wave motion is effected by bed porosity and it becomes smooth. In the experimental cases, the maximum horizontal overshooting occurs at Z/δ≈1.2, which is lower than the impermeable case of Z/δ≈2.7 obtained by Hwung and Lin (1989). Furthermore, the vertical overshooting has also been found in our experiments.

原文English
頁(從 - 到)3219-3230
頁數12
期刊Proceedings of the Coastal Engineering Conference
3
DOIs
出版狀態Published - 1997
事件Proceedings of the 1996 25th International Conference on Coastal Engineering. Part 1 (of 4) - Orlando, FL, USA
持續時間: 1996 九月 21996 九月 6

All Science Journal Classification (ASJC) codes

  • Ocean Engineering

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