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Sensitivity Analysis of Wave Forces on Monopod Platform under Metocean Condition by Simulation

Tiong, Jacky Ket Chiing (2014) Sensitivity Analysis of Wave Forces on Monopod Platform under Metocean Condition by Simulation. IRC, Universiti Teknologi PETRONAS. (Unpublished)

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Abstract

Stokes wave theory for deep water condition is employed in PETRONAS Technical Specification (PTS) for all water condition in Peninsular Malaysia Operation, Sarawak Operation and Sabah Operation. This research aims to address this through predicting wave forces from wave theories using simulation study and analyzing the sensitivity of wave forces to wave theories and deviated wave height criteria. In PTS, for 100-year storm event, the wave height criteria recorded shows fluctuation of 140% from the wave height criteria for operating event. With reference to this, it is feasible to adopt a deviation of ±40% with assumption that the wave height is reduced to 40% less is during the extreme low tidal waves. Wave theories are used in theoretical predictions of wave kinematic using the measured wave height, wave period and water depth. Extensive literature review has been done to better understand the wave forces, water condition and prediction wave kinematics by wave theories. Structural Analysis Computer Software (SACS) v3.5 is used as the main tools in the methodology. The monopod structure is modeled in SACS for PMO, SKO and SBO region. Stokes wave theory is identified as conservative for monopod structure design in PMO zone. For SKO zone, the wave force is recognized as sensitive towards wave theories. Based on analysis result, Cnoidal wave theory is identified as conservative over other applicable wave theories. Samarang in SBO zone is having transitional water condition. Wave force is recognized to be changing sensitively by Cnoidal wave theory. Analysis results reflected that Cnoidal is more conservative due to more critical values of wave forces predicted, higher order wave theory and best describe the transitional water condition.

Item Type: Final Year Project
Academic Subject : Academic Department - Civil Engineering - Water and environment - Environmental - Hazardous waste
Subject: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Engineering > Civil
Depositing User: Ahmad Suhairi Mohamed Lazim
Date Deposited: 28 Jan 2015 09:48
Last Modified: 25 Jan 2017 09:36
URI: http://utpedia.utp.edu.my/id/eprint/14552

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