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Title: | STUDY OF EXTREME BREAKING WAVE AND ITS IMPACT ON A VERTICLE WALL SUSPENDED ABOVE FREE SURFACE | Authors: | YANG XIAOXIAO | ORCID iD: | orcid.org/0000-0002-6504-2055 | Keywords: | extreme breaking wave, extreme breaking wave impact, wave-structure interaction, dynamic impact pressure, wave velocity field, PIV, ISPH | Issue Date: | 21-Dec-2020 | Citation: | YANG XIAOXIAO (2020-12-21). STUDY OF EXTREME BREAKING WAVE AND ITS IMPACT ON A VERTICLE WALL SUSPENDED ABOVE FREE SURFACE. ScholarBank@NUS Repository. | Abstract: | This thesis presents an integrated approach involving precision-controlled experimentation and fit-for-purpose numerical simulation, to derive deeper insights pertaining to the physics of extreme waves and extreme wave impacts. This includes a systematic variation of the impact scenarios, and a suite of high-speed, high-resolution and highly-synchronised sensing techniques to quantify the details of fluid-structure interactions, velocity fields and spatial-temporal variations of the dynamic pressures. The physical measurements were further complemented with ISPH modelling efforts, that provided further details not tractable in the experiments. Based on results obtained, five broad impact types have been identified and defined, guided by the incident wave profiles just prior to impact. Each impact scenario had led to impact pressure time history with distinct key features. The highest impact pressures were associated with a convergence of the horizontally impinging overturning crest and the vertical surge of the wall boundary water mass. The resulting effect of a focusing incident wave front also led to the highest impact forces. | URI: | https://scholarbank.nus.edu.sg/handle/10635/191281 |
Appears in Collections: | Ph.D Theses (Open) |
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01Part_YANGXX.pdf | 16.88 MB | Adobe PDF | OPEN | None | View/Download | |
02Part_YANGXX.pdf | 24.13 MB | Adobe PDF | OPEN | None | View/Download |
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