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Dynamic behaviours of damaged stability for floating energy storage unit after accidental collision

The transient dynamic behaviour of floating energy storage unit (FESU) is a result of coupling between three non-linear effects, which are sloshing of floodwater, wave loading, and FESU dynamics. The coupling of these effects would result in the catastrophic failure of the FESU in extreme conditions...

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Main Authors:	Kang, Hooi-Siang, Choo, Hau-Wei, Khor, Wei-Han, Lee, Kee-Quen, Tey, Wah Yen, Lee, Kiat Moon, Liu, Yu-Jie, Chong, Wen Tong
Format:	Conference or Workshop Item
Published:	IOP PUBLISHING LTD 2020
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://eprints.um.edu.my/37052/ https://iopscience.iop.org/article/10.1088/1755-1315/463/1/012110
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spelling	my.um.eprints.370522023-06-02T01:43:48Z http://eprints.um.edu.my/37052/ Dynamic behaviours of damaged stability for floating energy storage unit after accidental collision Kang, Hooi-Siang Choo, Hau-Wei Khor, Wei-Han Lee, Kee-Quen Tey, Wah Yen Lee, Kiat Moon Liu, Yu-Jie Chong, Wen Tong TJ Mechanical engineering and machinery The transient dynamic behaviour of floating energy storage unit (FESU) is a result of coupling between three non-linear effects, which are sloshing of floodwater, wave loading, and FESU dynamics. The coupling of these effects would result in the catastrophic failure of the FESU in extreme conditions. Computational Fluid Dynamics (CFD) has shown that it holds great potential in solving the problem in the time domain, which is suitable for the transient stage. In this study, CFD simulation of damaged stability was conducted by using OpenFOAM to determine the dynamic response of FESU under the effects of floodwater and wave in transient flooding. OpenFOAM CFD simulation was conducted for the flooding of barge shaped FESU with different water inlet and air outlet sizes in still water condition followed by damaged stability in Stokes' fifth-order beam wave and head wave condition. Dynamic responses of FESU, such as roll, pitch, heave, and floodwater volume flow rates were determined using the dynamic meshing solver of OpenFOAM. Simulation results showed similarity to experimental results within the time frame of 16 seconds. Reduction in water inlet area and air outlet area decreased the flooding time and flow rate of flood water. The amplitude of vibration of roll and pitch motion increased as the flood water volume was increased due to the force of floodwater exerted on the wall. Sloshing effects also caused the model to roll and pitch in secondary vibrational motion. Due to the coupling effect of the three non-linear criteria, the inflow and outflow of floodwater changed with time, which concludes that transient effects should not be ignored in the damaged stability assessment of FESU. IOP PUBLISHING LTD 2020 Conference or Workshop Item PeerReviewed Kang, Hooi-Siang and Choo, Hau-Wei and Khor, Wei-Han and Lee, Kee-Quen and Tey, Wah Yen and Lee, Kiat Moon and Liu, Yu-Jie and Chong, Wen Tong (2020) Dynamic behaviours of damaged stability for floating energy storage unit after accidental collision. In: International Conference on Sustainable Energy and Green Technology (SEGT), 11-14 December 2019, Bangkok, Thailand. https://iopscience.iop.org/article/10.1088/1755-1315/463/1/012110
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Kang, Hooi-Siang Choo, Hau-Wei Khor, Wei-Han Lee, Kee-Quen Tey, Wah Yen Lee, Kiat Moon Liu, Yu-Jie Chong, Wen Tong Dynamic behaviours of damaged stability for floating energy storage unit after accidental collision
description	The transient dynamic behaviour of floating energy storage unit (FESU) is a result of coupling between three non-linear effects, which are sloshing of floodwater, wave loading, and FESU dynamics. The coupling of these effects would result in the catastrophic failure of the FESU in extreme conditions. Computational Fluid Dynamics (CFD) has shown that it holds great potential in solving the problem in the time domain, which is suitable for the transient stage. In this study, CFD simulation of damaged stability was conducted by using OpenFOAM to determine the dynamic response of FESU under the effects of floodwater and wave in transient flooding. OpenFOAM CFD simulation was conducted for the flooding of barge shaped FESU with different water inlet and air outlet sizes in still water condition followed by damaged stability in Stokes' fifth-order beam wave and head wave condition. Dynamic responses of FESU, such as roll, pitch, heave, and floodwater volume flow rates were determined using the dynamic meshing solver of OpenFOAM. Simulation results showed similarity to experimental results within the time frame of 16 seconds. Reduction in water inlet area and air outlet area decreased the flooding time and flow rate of flood water. The amplitude of vibration of roll and pitch motion increased as the flood water volume was increased due to the force of floodwater exerted on the wall. Sloshing effects also caused the model to roll and pitch in secondary vibrational motion. Due to the coupling effect of the three non-linear criteria, the inflow and outflow of floodwater changed with time, which concludes that transient effects should not be ignored in the damaged stability assessment of FESU.
format	Conference or Workshop Item
author	Kang, Hooi-Siang Choo, Hau-Wei Khor, Wei-Han Lee, Kee-Quen Tey, Wah Yen Lee, Kiat Moon Liu, Yu-Jie Chong, Wen Tong
author_facet	Kang, Hooi-Siang Choo, Hau-Wei Khor, Wei-Han Lee, Kee-Quen Tey, Wah Yen Lee, Kiat Moon Liu, Yu-Jie Chong, Wen Tong
author_sort	Kang, Hooi-Siang
title	Dynamic behaviours of damaged stability for floating energy storage unit after accidental collision
title_short	Dynamic behaviours of damaged stability for floating energy storage unit after accidental collision
title_full	Dynamic behaviours of damaged stability for floating energy storage unit after accidental collision
title_fullStr	Dynamic behaviours of damaged stability for floating energy storage unit after accidental collision
title_full_unstemmed	Dynamic behaviours of damaged stability for floating energy storage unit after accidental collision
title_sort	dynamic behaviours of damaged stability for floating energy storage unit after accidental collision
publisher	IOP PUBLISHING LTD
publishDate	2020
url	http://eprints.um.edu.my/37052/ https://iopscience.iop.org/article/10.1088/1755-1315/463/1/012110
_version_	1768007305518907392
score	13.211869

Dynamic behaviours of damaged stability for floating energy storage unit after accidental collision

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