碩士 / 國立成功大學 / 水利及海洋工程學系碩博士班 / 96 / The main objective of this paper is to experimentally investigate the
fluid-structure interaction between a plunging breaking solitary wave impinging and
overtopping a smooth impermeable sloping seawall. The incident waves with
different wave nonlinearity and freeboard in the present experiments can be
categorized as three types: (1) a turbulent bore rushing inland and subsequently
impacting and overtopping on the seawall, (2) a plunging breaking wave directly
impinging and then overturning on the seawall and (3) a wave straightforwardly
overturning over the seawall. Detailed measurements on free surface evolution,
dynamic impact pressure, total overtopping discharge and subsequent run-up
behaviors in the vicinity of seawall are systematically reported. Qualitative
laboratory information by using the high-speed camera photography are also
undertaken to observe detailed wave evolution courses. The maximum impact
pressure distribution with regard to all cases on the seawall are examined and
discussed. The kinematic properties of run-up and total overtopping discharge are
also discussed by comparing against the available empirical formulae.
Based on our analyses, it is found that the time history of dynamic pressure has
an inclination to that of local free surface elevation except the instant of wave
impingement. In addition, we also found that the presence of seawall can
approximately reduce 20 % the maximum run-up height compared to the case
where the seawall is absence. Eventually the total overtopping discharge is
summarized and is compared with the available model. Fairly good agreements are
achieved.
| Identifer | oai:union.ndltd.org:TW/096NCKU5083042 |
| Date | January 2008 |
| Creators | Wei-jia Chen, 陳韋嘉 |
| Contributors | Hwung-Hweng Hwung, 黃煌煇 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 85 |
Page generated in 0.0068 seconds