Coastal protection with submerged vertical flexible sheets

This study investigated the wave interactions with submerged vertical polypropylene (PP) sheets experimentally. The sheets with different lengths were tensioned and hinged at both ends. In addition, the study used the GoPro camera to record the wave measurement. Furthermore, the cameras and the imag...

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Main Author: Toh, Yong Jia
Other Authors: Law Wing-Keung, Adrian
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2021
Subjects:
Online Access:https://hdl.handle.net/10356/153932
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1539322021-12-15T14:00:05Z Coastal protection with submerged vertical flexible sheets Toh, Yong Jia Law Wing-Keung, Adrian School of Civil and Environmental Engineering CWKLAW@ntu.edu.sg Engineering::Civil engineering This study investigated the wave interactions with submerged vertical polypropylene (PP) sheets experimentally. The sheets with different lengths were tensioned and hinged at both ends. In addition, the study used the GoPro camera to record the wave measurement. Furthermore, the cameras and the image processing toolbox from MATLAB captured and identified the wave interaction with the sheet. Based on the results, the reflection coefficient was identified by the least square method. At the same time, the amplitude of the transmitted wave was identified as the average wave amplitude of transmitted waves. The results show that increased tension leads to increased rigidity which causes more reflected wave energy. Therefore, it had a higher reflection coefficient and lower transmission coefficient. When the wave period was near the sheet resonance frequency, there was a sudden increase in the transmission coefficient. In addition, the wave interactions with fully and partially tensioned penetrated sheets are discussed based on reflection and transmission coefficient and maximum sheet displacement. Further studies with different length of sheets and tension forces applied on the sheet need to be investigated in the future. Bachelor of Engineering (Civil) 2021-12-15T14:00:04Z 2021-12-15T14:00:04Z 2021 Final Year Project (FYP) Toh, Y. J. (2021). Coastal protection with submerged vertical flexible sheets. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/153932 https://hdl.handle.net/10356/153932 en application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Civil engineering
spellingShingle Engineering::Civil engineering
Toh, Yong Jia
Coastal protection with submerged vertical flexible sheets
description This study investigated the wave interactions with submerged vertical polypropylene (PP) sheets experimentally. The sheets with different lengths were tensioned and hinged at both ends. In addition, the study used the GoPro camera to record the wave measurement. Furthermore, the cameras and the image processing toolbox from MATLAB captured and identified the wave interaction with the sheet. Based on the results, the reflection coefficient was identified by the least square method. At the same time, the amplitude of the transmitted wave was identified as the average wave amplitude of transmitted waves. The results show that increased tension leads to increased rigidity which causes more reflected wave energy. Therefore, it had a higher reflection coefficient and lower transmission coefficient. When the wave period was near the sheet resonance frequency, there was a sudden increase in the transmission coefficient. In addition, the wave interactions with fully and partially tensioned penetrated sheets are discussed based on reflection and transmission coefficient and maximum sheet displacement. Further studies with different length of sheets and tension forces applied on the sheet need to be investigated in the future.
author2 Law Wing-Keung, Adrian
author_facet Law Wing-Keung, Adrian
Toh, Yong Jia
format Final Year Project
author Toh, Yong Jia
author_sort Toh, Yong Jia
title Coastal protection with submerged vertical flexible sheets
title_short Coastal protection with submerged vertical flexible sheets
title_full Coastal protection with submerged vertical flexible sheets
title_fullStr Coastal protection with submerged vertical flexible sheets
title_full_unstemmed Coastal protection with submerged vertical flexible sheets
title_sort coastal protection with submerged vertical flexible sheets
publisher Nanyang Technological University
publishDate 2021
url https://hdl.handle.net/10356/153932
_version_ 1720447095983308800