Numerical Investigation on Dynamic Responses of Classic Spar Platforms: Long Crested Waves vs. Short Crested Waves

In the real sea condition, only multi-directional waves or short crested waves are found. Short crested wave isdefined as thelinear summation of various long crested waves propagated tovarious angles, where the magnitude and direction generated are randomly varied. In this study, the dynamic res...

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Main Authors: Kurian, V.J., Ng , C.Y., Liew, M. S.
Format: Conference or Workshop Item
Published: 2012
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Online Access:http://eprints.utp.edu.my/8680/1/p725-kurian.pdf
http://eprints.utp.edu.my/8680/
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Institution: Universiti Teknologi Petronas
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spelling my.utp.eprints.86802017-01-19T08:21:16Z Numerical Investigation on Dynamic Responses of Classic Spar Platforms: Long Crested Waves vs. Short Crested Waves Kurian, V.J. Ng , C.Y. Liew, M. S. TC Hydraulic engineering. Ocean engineering TA Engineering (General). Civil engineering (General) In the real sea condition, only multi-directional waves or short crested waves are found. Short crested wave isdefined as thelinear summation of various long crested waves propagated tovarious angles, where the magnitude and direction generated are randomly varied. In this study, the dynamic responses of classic spar platform subjected to long crested and short crested waves are investigated numerically and compared. Two numerical simulations are developed by incorporating Diffraction theory to obtain the wave forces for long crested waves and short crested waves. The classic spar platform is assumed to be rigid with three degrees of freedom surge, heave and pitch, restrained by four mooring lines. For every time step, the mass, damping and stiffness matrices are evaluated. The equations of motion are formulated for the platform dynamic equilibrium and are solved by using Newmark Beta method in time domain. The results in terms of Response Amplitude Operator (RAO) for surge, heave and pitch motionsare obtained and compared. 2012-12 Conference or Workshop Item PeerReviewed application/pdf http://eprints.utp.edu.my/8680/1/p725-kurian.pdf Kurian, V.J. and Ng , C.Y. and Liew, M. S. (2012) Numerical Investigation on Dynamic Responses of Classic Spar Platforms: Long Crested Waves vs. Short Crested Waves. In: 2012 IEEE Colloquium on Humanities, Science and Engineering Research (CHUSER 2012), 3-4 December 2012, Kota Kinabalu. http://eprints.utp.edu.my/8680/
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/
topic TC Hydraulic engineering. Ocean engineering
TA Engineering (General). Civil engineering (General)
spellingShingle TC Hydraulic engineering. Ocean engineering
TA Engineering (General). Civil engineering (General)
Kurian, V.J.
Ng , C.Y.
Liew, M. S.
Numerical Investigation on Dynamic Responses of Classic Spar Platforms: Long Crested Waves vs. Short Crested Waves
description In the real sea condition, only multi-directional waves or short crested waves are found. Short crested wave isdefined as thelinear summation of various long crested waves propagated tovarious angles, where the magnitude and direction generated are randomly varied. In this study, the dynamic responses of classic spar platform subjected to long crested and short crested waves are investigated numerically and compared. Two numerical simulations are developed by incorporating Diffraction theory to obtain the wave forces for long crested waves and short crested waves. The classic spar platform is assumed to be rigid with three degrees of freedom surge, heave and pitch, restrained by four mooring lines. For every time step, the mass, damping and stiffness matrices are evaluated. The equations of motion are formulated for the platform dynamic equilibrium and are solved by using Newmark Beta method in time domain. The results in terms of Response Amplitude Operator (RAO) for surge, heave and pitch motionsare obtained and compared.
format Conference or Workshop Item
author Kurian, V.J.
Ng , C.Y.
Liew, M. S.
author_facet Kurian, V.J.
Ng , C.Y.
Liew, M. S.
author_sort Kurian, V.J.
title Numerical Investigation on Dynamic Responses of Classic Spar Platforms: Long Crested Waves vs. Short Crested Waves
title_short Numerical Investigation on Dynamic Responses of Classic Spar Platforms: Long Crested Waves vs. Short Crested Waves
title_full Numerical Investigation on Dynamic Responses of Classic Spar Platforms: Long Crested Waves vs. Short Crested Waves
title_fullStr Numerical Investigation on Dynamic Responses of Classic Spar Platforms: Long Crested Waves vs. Short Crested Waves
title_full_unstemmed Numerical Investigation on Dynamic Responses of Classic Spar Platforms: Long Crested Waves vs. Short Crested Waves
title_sort numerical investigation on dynamic responses of classic spar platforms: long crested waves vs. short crested waves
publishDate 2012
url http://eprints.utp.edu.my/8680/1/p725-kurian.pdf
http://eprints.utp.edu.my/8680/
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