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An experimental and numerical study of plunging wave impact on a box-shape structure

Bin Yan, Min Luo Orcid Logo, Wei Bai

Marine Structures, Volume: 66, Pages: 272 - 287

Swansea University Author: Min Luo Orcid Logo

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DOI (Published version): 10.1016/j.marstruc.2019.05.003

Abstract

The plunging wave impacts on a box-shape structure are investigated experimentally and numerically, focusing on three typical scenarios with distinct features, i.e. the wave impact occurs after, upon and before wave breaking. In the experiments, the plunging wave is generated by a piston-type wave m...

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Published in: Marine Structures
ISSN: 0951-8339
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa50386
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spelling 2022-11-15T16:35:28.2427531 v2 50386 2019-05-16 An experimental and numerical study of plunging wave impact on a box-shape structure 91e3463c73c6a9d1f5c025feebe4ad0f 0000-0002-6688-9127 Min Luo Min Luo true false 2019-05-16 GENG The plunging wave impacts on a box-shape structure are investigated experimentally and numerically, focusing on three typical scenarios with distinct features, i.e. the wave impact occurs after, upon and before wave breaking. In the experiments, the plunging wave is generated by a piston-type wave maker whose motion is governed by the focused wave theory. The fixed box-shape structure mimics the offshore platform structures. Measured are the wave elevations at typical positions, the wave impact pressures on the front and bottom (violent impact is very likely to occur) of the platform, and the wave profiles of the transient wave impact process. The experiment identifies the pressure maximums both on the front and bottom walls under three different wave impacts. The pressure oscillation along the front wall is observed and analyzed by examining the evolution of air cavity. The experimental parameters and dimensions including the actual wave maker motion signal were inputted into the numerical model to reproduce the same case. Numerical simulations using an improved immersed boundary method are compared with the experimental results with roughly good agreements being achieved. Besides, numerical pressure distributions along the front and bottom walls are presented to find different modes of wave impact. Finally, the maximal pressures on the front wall of the box-shape structure are normalized by two approaches and compared with the documented maximal pressure ranges. Journal Article Marine Structures 66 272 287 0951-8339 Plunging wave, Pressure oscillation, Wave impact, Box-shape structure, Immersed boundary method 31 12 2019 2019-12-31 10.1016/j.marstruc.2019.05.003 http://e-space.mmu.ac.uk/622878/ COLLEGE NANME General Engineering COLLEGE CODE GENG Swansea University 2022-11-15T16:35:28.2427531 2019-05-16T09:18:00.5244905 Faculty of Science and Engineering School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering Bin Yan 1 Min Luo 0000-0002-6688-9127 2 Wei Bai 3 0050386-07062019092203.pdf yan2019.pdf 2019-06-07T09:22:03.1530000 Output 23421722 application/pdf Proof true 2020-05-14T00:00:00.0000000 false eng
title An experimental and numerical study of plunging wave impact on a box-shape structure
spellingShingle An experimental and numerical study of plunging wave impact on a box-shape structure
Min Luo
title_short An experimental and numerical study of plunging wave impact on a box-shape structure
title_full An experimental and numerical study of plunging wave impact on a box-shape structure
title_fullStr An experimental and numerical study of plunging wave impact on a box-shape structure
title_full_unstemmed An experimental and numerical study of plunging wave impact on a box-shape structure
title_sort An experimental and numerical study of plunging wave impact on a box-shape structure
author_id_str_mv 91e3463c73c6a9d1f5c025feebe4ad0f
author_id_fullname_str_mv 91e3463c73c6a9d1f5c025feebe4ad0f_***_Min Luo
author Min Luo
author2 Bin Yan
Min Luo
Wei Bai
format Journal article
container_title Marine Structures
container_volume 66
container_start_page 272
publishDate 2019
institution Swansea University
issn 0951-8339
doi_str_mv 10.1016/j.marstruc.2019.05.003
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Aerospace, Civil, Electrical, General and Mechanical Engineering - General Engineering
url http://e-space.mmu.ac.uk/622878/
document_store_str 1
active_str 0
description The plunging wave impacts on a box-shape structure are investigated experimentally and numerically, focusing on three typical scenarios with distinct features, i.e. the wave impact occurs after, upon and before wave breaking. In the experiments, the plunging wave is generated by a piston-type wave maker whose motion is governed by the focused wave theory. The fixed box-shape structure mimics the offshore platform structures. Measured are the wave elevations at typical positions, the wave impact pressures on the front and bottom (violent impact is very likely to occur) of the platform, and the wave profiles of the transient wave impact process. The experiment identifies the pressure maximums both on the front and bottom walls under three different wave impacts. The pressure oscillation along the front wall is observed and analyzed by examining the evolution of air cavity. The experimental parameters and dimensions including the actual wave maker motion signal were inputted into the numerical model to reproduce the same case. Numerical simulations using an improved immersed boundary method are compared with the experimental results with roughly good agreements being achieved. Besides, numerical pressure distributions along the front and bottom walls are presented to find different modes of wave impact. Finally, the maximal pressures on the front wall of the box-shape structure are normalized by two approaches and compared with the documented maximal pressure ranges.
published_date 2019-12-31T04:01:49Z
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score 11.016235

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