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DYNAMIC RESPONSE OF SPAR PLATFORM SECURED WITH MOORING SYSTEM USING ANSYS-AQWA

Rao, Syam Sundhara (2015) DYNAMIC RESPONSE OF SPAR PLATFORM SECURED WITH MOORING SYSTEM USING ANSYS-AQWA. IRC, Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

Oil and gas exploration has moved to deeper water in recent years and the type of offshore structures used are also changing. A spar has a deep draft cylindrical hull and is suitable for use in deep water regions. Since spar is a floating structure, it uses mooring lines to hold its position even though the wave and current loading will cause a motion response on the spar. To understand the motion as well as the tension loadings in the mooring lines, a dynamic analysis has been conducted in the time domain. The analysis uses a regular wave profile with 6m height and a period of 10s. The spar is secured with four mooring lines and is subjected to this wave loading and using the Linear Airy Wave Theory for computation. The forces acting on the spar and mooring lines is governed by the Morrison’s Equation. The responses of surge, heave, pitch and tension is then compared to a benchmark case obtained from previous study for validation purpose. Upon validation parametric study on the crosssectional area of mooring lines and the number of mooring lines was performed. Simulation was performed using ANSYS AQWA finite element software and the results obtained are consistent with previous studies.

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Petroleum
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Ahmad Suhairi Mohamed Lazim
Date Deposited: 07 Oct 2015 10:17
Last Modified: 25 Jan 2017 09:36
URI: http://utpedia.utp.edu.my/id/eprint/15670

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