Blar i Department of Mechanical and Structural Engineering and Materials Science (TN-IMBM) på forfatter "Ong, Muk Chen"
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Numerical investigation of scour beneath pipelines subjected to an oscillatory flow condition
Huang, Jun; Yin, Guang; Ong, Muk Chen; Myrhaug, Dag; Jia, Xu (Peer reviewed; Journal article, 2021-10)The present study carries out two-dimensional numerical simulations to investigate scour beneath a single pipeline and piggyback pipelines subjected to an oscillatory flow condition at a Keulegan–Carpenter (KC) number of ... -
Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements
Wu, Jie; Lekkala, Malakonda K. Reddy; Ong, Muk Chen (Peer reviewed; Journal article, 2020-01)This paper presents a numerical algorithm used together with a Finite-Element based Vortex-Induced Vibration (VIV) prediction software VIVANA to obtain a hydrodynamic force coefficient database based on response measurements ... -
Numerical investigation of wave-plus-current induced scour beneath two submarine pipelines in tandem
Li, Yuzhu; Ong, Muk Chen; Fuhrman, David R.; Larsen, Bjarke Eltard (Peer reviewed; Journal article, 2019-12)Two-dimensional (2D) local scour beneath two submarine pipelines in tandem under wave-plus-current conditions is investigated numerically. A fully-coupled hydrodynamic and morphologic model based on unsteady Reynolds-averaged ... -
Numerical Investigation on Aerodynamic Characteristics of Dual-Rotor Wind Turbines
Wang, Kai; Liu, Tianhui; Wan, Yuanchen; Ong, Muk Chen; Wu, Tiecheng (Peer reviewed; Journal article, 2022)Improving power output and reducing costs are crucial to the sustainable development of offshore wind power. In the present study, a dual-rotor wind turbine (DRWT) is proposed to improve wind energy capture efficiency by ... -
Numerical investigations of flow around subsea covers at high Reynolds numbers
Yin, Guang; Zhang, Yanni; Ong, Muk Chen (Peer reviewed; Journal article, 2021)Two-dimensional (2D) numerical simulations of flow over wall-mounted rectangular and trapezoidal ribs subjected to a turbulent boundary layer flow with the normalized boundary layer thickness of δ/D = 0.73,1.96,2.52 (D is ... -
Numerical Investigations on the Layout Design of Open Cage Fish Farm
Aydemir, Onur (Master thesis, 2023)Aquaculture, one of the fastest-growing food production method, has become Norway's second-largest export industry in the past decades. In Norway, the high-value fish like Atlantic Salmon are usually raised in multi-cage ... -
Numerical Modeling and Dynamic Analysis of Two-Rotor Floating Offshore Wind Turbines
El Beshbichi, Omar (PhD thesis UiS;682;, Doctoral thesis, 2023)The exploitation of offshore wind in deep waters by means of floating wind turbines is steadily gaining traction as a suitable option to produce renewable energy. Among the innovative technologies recently proposed, two-rotor ... -
Numerical Modelling and Global Response Assessment of Floating Docks towards Efficient, Safer and Autonomous Docking Operations
Zhang, Jianan (PhD thesis UiS;, Doctoral thesis, 2024)Floating docks are known for their construction efficiency and operational flexibility compared to traditional graving docks. They play an important role in shipyards by serving as essential platforms for vessel construction, ... -
Numerical Simulation of Breaking Wave Loading on Standing Circular Cylinders with Different Transverse Inclined Angles
Qu, Sen; Liu, Shengnan; Ong, Muk Chen; Sun, Shuzheng; Ren, Huilong (Peer reviewed; Journal article, 2020)The purpose of this paper is to numerically simulate the breaking wave past a standing cylinder with different transverse inclined angles. The numerical simulations are carried out by solving the Unsteady Reynolds-Averaged ... -
Numerical Simulation of Flow Around Subsea Covers at high Reynolds Numbers
Andersen, Martin (Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-15)The present study investigates turbulent flow over square and trapezoidal wall-mounted subsea covers in single and tandem configuration. The structures under investigation in the single configuration are subjected to a ... -
Numerical Simulation of Flow around Subsea Covers at High Reynolds Numbers
Zhang, Yanni (Masteroppgave/UIS-TN-IKBM/2019;, Master thesis, 2020-01-15)Glass Reinforced Plastic (GRP) covers are widely used to protect the subsea equipment from external damage. In this work, numerical simulations of a fully developed turbulent boundary layer flow over square and trapezoidal ... -
Numerical simulation of flow around two 5:1 rectangular cylinders at a high Reynolds Number
Yin, Guang; Monaci, T.; Ong, Muk Chen (Peer reviewed; Journal article, 2019)The unsteady flows around two stationary rectangular cylinders with a chord-to-thickness ratio of B/D = 5 at ReD = 2 × 105 (based on the free stream velocity and the width length D), are investigated using two-dimensional ... -
Numerical simulation of oxygen transport in land-based aquaculture tank
Yin, Guang; Ong, Muk Chen; Lee, Jihoon; Kim, Taeho (Peer reviewed; Journal article, 2021-10)Dissolved oxygen is an important indicator of the water quality and important for fish survival in aquaculture. The distribution of the dissolved oxygen is highly dependent on the flow motions, the pressure and the temperature ... -
Numerical simulation of piggyback pipelaying under current loadings
Lee, Chern Fong; Ji, Guomin; Janocha, Marek Jan; Ong, Muk Chen; Borsheim, Andreas (Peer reviewed; Journal article, 2023)For piggyback pipelaying operations, current-induced force and its effect on the piggyback pipe have not been thoroughly studied. In the present study, an improved method in hydrodynamic load calculation and structural ... -
Numerical simulations of flow around two tandem wall-mounted structures at high Reynolds numbers
Yin, Guang; Andersen, Martin; Ong, Muk Chen (Peer reviewed; Journal article, 2020)In the present study, the flow around two-dimensional (2D) square and trapezoidal wall- mounted structures in tandem on a horizontal flat wall has been simulated using two-dimensional Reynolds-averaged Navier-Stokes (RANS) ... -
Numerical Simulations of Flow Over Bottom-Mounted Structures at High Reynolds Number
Serta Fraga, Vinicius (Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2019-06)A common challenge in on-bottom stability design is to select accurate hydrodynamic quantities, such as drag and lift coefficients, to compute the forces on structures subject to fluid flow. The objective of the present ... -
Numerical simulations of flow-induced vibrations of two rigidly coupled cylinders with uneven diameters in the upper transition Reynolds number regime
Pires Vieira Serta, Clarissa; Janocha, Marek Jan; Yin, Guang; Ong, Muk Chen (Peer reviewed; Journal article, 2021)Two degree-of-freedom (2-DoF) flow-induced vibrations (FIV) of two rigidly coupled cylinders are numerically investigated at the Reynolds number of 3.6 × 106. Two- dimensional (2D) Unsteady Reynolds-Averaged Navier–Stokes ... -
Numerical Simulations of Near-Wall Vortex-Induced Vibrations of two Circular Cylinders in Tandem
Eie, Kjartan (Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06-15)Free-spanning subsea pipelines may experience vortex-induced vibrations (VIV) when exposed to fluid flow. These resonant motions can cause fatigue-related problems and in some cases failure of the pipe. A common configuration ... -
Numerical simulations of the sliding impact between an ice floe and a ship hull structure in ABAQUS
Zhang, Jianan; Liu, Zhenhui; Ong, Muk Chen; Tang, Wenyong (Peer reviewed; Journal article, 2022)This paper studies the hull structural responses of a steel grillage subjected to sliding ice loads, which have been rarely investigated in the literature. Sliding ice loads are modelled using nonlinear finite element ... -
Numerical Simulations of Turbulent Flow through Piping Systems
Jurga, Agata (Master thesis, 2022)Piping systems have a wide range of applications across many different industries. Pipelines are essential infrastructure in the offshore oil & gas installations. One of the key challenges when operating complicated piping ...