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Comparison of impulsive wave forces on a semi-submerged platform deck, with and without columns and considering air compressibility effects, under regular wave actions

The decks of oil-extracting platforms could be damaged by great wave impact loads under harsh ocean conditions. Our understanding of the pressure distribution characteristics under the deck, especially those influenced by columns, is incomplete. A series of experiments are carried out to study the...

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Main Authors: Zhai, G., Zhou, T., Ma, Z., Ren, N., Chen, J., Teh, H.-M.
Format: Article
Published: Taylor and Francis Ltd. 2021
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85120182468&doi=10.1080%2f19942060.2021.1999858&partnerID=40&md5=30b468c6e8b47d041e842310048bc1d3
http://eprints.utp.edu.my/29369/
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spelling my.utp.eprints.293692022-03-25T01:40:18Z Comparison of impulsive wave forces on a semi-submerged platform deck, with and without columns and considering air compressibility effects, under regular wave actions Zhai, G. Zhou, T. Ma, Z. Ren, N. Chen, J. Teh, H.-M. The decks of oil-extracting platforms could be damaged by great wave impact loads under harsh ocean conditions. Our understanding of the pressure distribution characteristics under the deck, especially those influenced by columns, is incomplete. A series of experiments are carried out to study the spatial and instantaneous distribution of the impact pressure generated by regular waves acting on the deck, and two cases are considered: a flat plate (FP for short) and a plate with four vertical columns (CP for short). Three-dimensional numerical simulations using a modified wave generating tool are conducted and compared to experimental data. Both compressible and incompressible flow solvers are applied to further quantitatively analyse the effect of air compressibility on impacting forces. The results show marked changes in both the pressure distribution scatter under the deck and the magnitude of the impact pressure when comparing the two cases. It has been demonstrated that run-up along the columns can cause intense localized pressure on the deck, and a close relationship exists between this increased pressure and fluid velocity. Additionally, the preliminary results showed that the phase compressibility increases the peak pressure compared with that of an incompressible solver, and the former matches the experimental measurements better. © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. Taylor and Francis Ltd. 2021 Article NonPeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85120182468&doi=10.1080%2f19942060.2021.1999858&partnerID=40&md5=30b468c6e8b47d041e842310048bc1d3 Zhai, G. and Zhou, T. and Ma, Z. and Ren, N. and Chen, J. and Teh, H.-M. (2021) Comparison of impulsive wave forces on a semi-submerged platform deck, with and without columns and considering air compressibility effects, under regular wave actions. Engineering Applications of Computational Fluid Mechanics, 15 (1). pp. 1932-1953. http://eprints.utp.edu.my/29369/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description The decks of oil-extracting platforms could be damaged by great wave impact loads under harsh ocean conditions. Our understanding of the pressure distribution characteristics under the deck, especially those influenced by columns, is incomplete. A series of experiments are carried out to study the spatial and instantaneous distribution of the impact pressure generated by regular waves acting on the deck, and two cases are considered: a flat plate (FP for short) and a plate with four vertical columns (CP for short). Three-dimensional numerical simulations using a modified wave generating tool are conducted and compared to experimental data. Both compressible and incompressible flow solvers are applied to further quantitatively analyse the effect of air compressibility on impacting forces. The results show marked changes in both the pressure distribution scatter under the deck and the magnitude of the impact pressure when comparing the two cases. It has been demonstrated that run-up along the columns can cause intense localized pressure on the deck, and a close relationship exists between this increased pressure and fluid velocity. Additionally, the preliminary results showed that the phase compressibility increases the peak pressure compared with that of an incompressible solver, and the former matches the experimental measurements better. © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
format Article
author Zhai, G.
Zhou, T.
Ma, Z.
Ren, N.
Chen, J.
Teh, H.-M.
spellingShingle Zhai, G.
Zhou, T.
Ma, Z.
Ren, N.
Chen, J.
Teh, H.-M.
Comparison of impulsive wave forces on a semi-submerged platform deck, with and without columns and considering air compressibility effects, under regular wave actions
author_facet Zhai, G.
Zhou, T.
Ma, Z.
Ren, N.
Chen, J.
Teh, H.-M.
author_sort Zhai, G.
title Comparison of impulsive wave forces on a semi-submerged platform deck, with and without columns and considering air compressibility effects, under regular wave actions
title_short Comparison of impulsive wave forces on a semi-submerged platform deck, with and without columns and considering air compressibility effects, under regular wave actions
title_full Comparison of impulsive wave forces on a semi-submerged platform deck, with and without columns and considering air compressibility effects, under regular wave actions
title_fullStr Comparison of impulsive wave forces on a semi-submerged platform deck, with and without columns and considering air compressibility effects, under regular wave actions
title_full_unstemmed Comparison of impulsive wave forces on a semi-submerged platform deck, with and without columns and considering air compressibility effects, under regular wave actions
title_sort comparison of impulsive wave forces on a semi-submerged platform deck, with and without columns and considering air compressibility effects, under regular wave actions
publisher Taylor and Francis Ltd.
publishDate 2021
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85120182468&doi=10.1080%2f19942060.2021.1999858&partnerID=40&md5=30b468c6e8b47d041e842310048bc1d3
http://eprints.utp.edu.my/29369/
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score 13.211869

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