Browsing UiS Brage by Author "Ong, Muk Chen"
Now showing items 21-40 of 113
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Comparison of spar and semi-submersible floating wind turbine concepts with respect to seasickness of the maintenance personnel
Kaptan, Mert (Master thesis, 2021)Floating offshore wind turbines (FOWTs) are remotely located structures that are operating without humans on board. The technicians are expected to be on board from time to time throughout the life cycle of FOWTs for ... -
Computational Fluid Dynamics (CFD) Investigations of Flow-Induced Vibrations of Two Rigidly Coupled Cylinders at High Reynolds Number
Pires Vieira Serta, Clarissa (Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2020)Two degree-of-freedom (2-DoF) flow-induced vibrations (FIV) of a single cylinder and two rigidly coupled cylinders are numerically investigated at the Reynolds number of 3.6 × 10^6. Two-dimensional (2D) Unsteady ... -
Computational Fluid Dynamics (CFD) simulation of two-dimensional(2D) cross sectional flow around twin-box girder bridge
Jeong, Wonmin (Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-15)Flow around a twin-box bridge with a fixed spacing between the decks has been investigated using the two dimensional (2D) Unsteady Reynolds-Averaged Navier–Stokes (URANS) equations with the k–ω Shear Stress Transport (SST) ... -
Contact stresses associated with the wedge-lock mechanism in a prototype subsea pipeline recovery tool
Xing, Yihan; Eriksson, Nicolai Bull; Ong, Muk Chen; Knutsen, C. (Peer reviewed; Journal article, 2019)This paper examines the contact stresses associated with the wedge-lock mechanism in a prototype subsea pipeline recovery tool (PRT) through numerical methods and experimental testing. The prototype PRT studied combines ... -
Convolutional Neural Networks and Feature Fusion for Flow Pattern Identification of the Subsea Jumper
Lin, Shanying; Xu, Jialu; Liu, Shengnan; Ong, Muk Chen; Li, Wenhua (Peer reviewed; Journal article, 2023)The gas–liquid two-phase flow patterns of subsea jumpers are identified in this work using a multi-sensor information fusion technique, simultaneously collecting vibration signals and electrical capacitance tomography of ... -
Design and Dynamic Analysis of a Novel Subsea Shuttle Tanker
Ma, Yucong (PhD thesis UiS;, Doctoral thesis, 2023)Underwater pipelines, tanker ships, and liquefied gas carriers have traditionally been employed to transport hydrocarbons between offshore oil and gas facilities and onshore locations. However, both methods come with ... -
Design, Testing and Analysis of a New Pipeline Recovery Tool
Eriksson, Nicolai Bull (Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-15)Pipeline Recovery Tools (PRT’s) are used in decommissioning and recovery of subsea pipelines. The PRT often use a mechanical system to insert and lock itself onto the subsea pipeline. This thesis examines a unique connection ... -
Development of a coupling algorithm for fluid-structure interaction analysis of submerged aquaculture nets
Cheng, Hui; Ong, Muk Chen; Li, Lin; Chen, Hao (Peer reviewed; Journal article, 2021-12)A coupling algorithm between two open-source numerical toolboxes, i.e., OpenFOAM and Code_Aster, is implemented for fluid-structure interaction analysis of submerged nets. This algorithm is developed to handle the wake ... -
Dynamic Analysis of a Floating Fish Cage with Feeding Systems
Bruset, Mathias (Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06)Aquaculture is one of the fastest growing industries in Norway, and one of the fastest growing food production industries in the world. Limited access to available locations along the coast is gradually forcing aquacultural ... -
Dynamic analysis of a two-rotor wind turbine on spar-type floating platform
El Beshbichi, Omar; Xing, Yihan; Ong, Muk Chen (Peer reviewed; Journal article, 2021-07)The dynamic response of a two-rotor wind turbine mounted on a spar-type floating platform is studied. The response is compared against the baseline OC3 single-rotor design. Structural design shows how the two-rotor design ... -
Dynamic Analysis of a Vessel-shaped Fish Farm for Open Sea
Høiland, Andreas Vangdal (Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-15)In recent years, aquaculture has been the fastest-growing animal food producing industry in the world. However, the absence of suitable production areas might potentially become the most limiting factor for future production ... -
Dynamic analysis of flexible gravity-based fish cages under accidental failures in the mooring system
Dewan, Pulkit (Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-15)A growing population needs an increasing amount of high-protein and nutritious food. Having acknowledged that, there is a substantial increase in seafood production in the world today. Due to spatial and environmental ... -
Dynamic analysis of gravity based fish cage
Chang, Ying (Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-07-06)With the development of economy and growth of population, we are constantly facing the challenge of decreasing fish population and increasing needs in the fish market. Aquaculture is a practical way to fulfill this demand. ... -
Dynamic and Fatigue Analyses of Suspended Power Cables for Multiple Floating Offshore Wind Turbines
Beier, Dennis (Master thesis, 2023)Floating offshore wind turbines (FOWTs) are installed to effectively capture energy from offshore wind in deeper water areas where building bottom-fixed offshore wind turbines is not practical. The present study focuses ... -
Effects of mooring line breakage on dynamic responses of grid moored fish farms under pure current conditions
Cheng, Hui; Li, Lin; Ong, Muk Chen; Aarsæther, Karl Gunnar; Sim, Jaesub (Peer reviewed; Journal article, 2021)Due to the lack of sheltered area, Norwegian fish farms are expanding to more exposed and remote sites. The severe environmental conditions in exposed sites can increase the risk of structural failure during aquaculture ... -
The effects of slab geometries and wave directions on the steep wave-induced soil response and liquefaction around gravity-based offshore foundations
Li, Yuzhu; Ong, Muk Chen; Gudmestad, Ove Tobias; Hjertager, Bjørn H (Peer reviewed; Journal article, 2019)Gravity-based offshore foundations generally consist of a bottom slab and one or more cylindrical shafts on top of it. The slab geometry can strongly affect the surrounding flow pattern, dynamic wave pressure distribution ... -
Estimation of Hydrodynamic Forces on Cylinders Undergoing Flow-Induced Vibrations Based on Modal Analysis
Yin, Guang; Janocha, Marek Jan; Ong, Muk Chen (Peer reviewed; Journal article, 2022)The objective of the present study is estimating hydrodynamic forces acting on cylinders undergoing vortex-induced vibration (VIV) using dynamic mode decomposition (DMD). The cylinders are subjected to a uniform incoming ... -
An evaluation of different RANS turbulence models for simulating breaking waves past a vertical cylinder
Qu, Sen; Liu, Shengnan; Ong, Muk Chen (Peer reviewed; Journal article, 2021)The purpose of the present study is to evaluate the performance of different turbulence models for predicting the interaction between breaking waves and a vertical cylinder based on the volume of fluid (VOF) method. Six ... -
Experimental and Numerical Study on the Slug Characteristics and Flow-Induced Vibration of a Subsea Rigid M-Shaped Jumper
Li, Wenhua; Li, Jiahao; Yin, Guang; Ong, Muk Chen (Peer reviewed; Journal article, 2023)The subsea jumper has become an essential part of subsea production systems as a gas–liquid mixing pipeline connecting the pipeline end manifold (PLEM) to the Christmas tree. During oil and gas transportation, as a common ... -
Experimental Investigation and Numerical Modeling of Two-Phase Flow Development and Flow-Induced Vibration of a Multi-Plane Subsea Jumper
Li, Wenhua; Zhou, Qing; Yin, Guang; Ong, Muk Chen; Li, Gen; Han, Fenghui (Peer reviewed; Journal article, 2022)As an essential component in the offshore oil and gas industry, subsea jumpers are likely to encounter the cyclic-induced stresses caused by the alternating movement of gas plugs and liquid slugs while transporting a ...