Journal of Offshore Mechanics and Arctic Engineering: Recent submissions
Now showing items 241-260 of 2185
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An Improved Method for Predicting Roll Damping and Excessive Acceleration for a Ship With Moonpool Based on Computational Fluid Dynamics Method
(The American Society of Mechanical Engineers (ASME), 2023)Excessive acceleration is one of the stability failure modes involving large roll motion of ships. The overset method is applied to solve the six degrees-of-freedom motion of the ship with moonpool in beam waves. Based on ... -
Mitigation of Wave Impact on Sea Wall by a Floating Elastic Plate and a Porous Structure
(The American Society of Mechanical Engineers (ASME), 2023)The purpose of the present study is to reduce the high wave load on a sea wall by utilizing an elastic plate (EP) kept at fixed distance from a porous structure (PS). Thin plate theory is used to model the flow past EP, ... -
Analyzing Extreme Sea State Conditions by Time-Series Simulation Accounting for Seasonality
(The American Society of Mechanical Engineers (ASME), 2023)This article presents an extreme value analysis on data of significant wave height based on time-series simulation. A method to simulate time series with given marginal distribution and preserving the autocorrelation ... -
UiS Subsea-Freight Glider: A Large Buoyancy-Driven Autonomous Cargo Glider
(The American Society of Mechanical Engineers (ASME), 2023)This study presents the baseline design for the autonomous subsea vehicle capable of traveling at a lower speed of 1 m/s with an operating range of 400 km. Owing to UiS subsea-freight glider’s (USFG) exceedingly economical ... -
Two-Dimensional Planar Modeling of the Depth Control of a Subsea Shuttle Tanker
(The American Society of Mechanical Engineers (ASME), 2023)A novel subsea shuttle tanker (SST) concept was proposed as a cost-effective alternative to subsea pipelines and tanker ships for liquid CO2 transportation between a source facility and a subsea well. The SST will be ... -
Assessing Fatigue Damage in the Reuse of a Decommissioned Offshore Jacket Platform to Support a Wind Turbine
(The American Society of Mechanical Engineers (ASME), 2023)An offshore energy transition, even if only a gradual one, from carbon-emitting fossil fuel extraction to cleaner sources is recommended, if we are to slow the harmful impacts of climate change. The potential for sustainable ... -
Power Performance and Response Analysis of a Semi-Submersible Wind Turbine Combined With Flap-Type and Torus Wave Energy Converters
(The American Society of Mechanical Engineers (ASME), 2023)An integrated offshore wind and wave energy system is an attractive concept in areas with abundant wind and wave energy resources. The sharing of supporting platform and facilities, e.g., mooring systems, offers significant ... -
Wave Effects on Vortex-Induced Vibrations of a Top-Tensioned Riser
(The American Society of Mechanical Engineers (ASME), 2023)Offshore drilling risers and many production risers are top-tensioned risers (TTRs), connecting the vessel and seabed via joints. External loads such as currents, waves, and vessel motions introduce cyclic loads and motions ... -
American and European Hydrostatic Tubular Beam-Column Equation Comparisons
(The American Society of Mechanical Engineers (ASME), 2023)For structural design engineers, there is an apparent gap in how the hydrostatic pressure is treated between the American and European systems. In API RP-2A, the beam-column equations treat the axial and bending capacities ... -
Analysis of the Experimental Data of Slamming Loads on a Liquefied Natural Gas Carrier in Abnormal Waves
(The American Society of Mechanical Engineers (ASME), 2022)The objective of the paper is to identify slamming characteristics of ships in abnormal waves by analyzing the experimental slamming loads for a liquefied natural gas (LNG) carrier from the model tests of the ship, which ... -
Weather Window Analysis in Operations and Maintenance Policies for Offshore Floating Multi-Purpose Platforms
(The American Society of Mechanical Engineers (ASME), 2022)In an emerging “blue economy,” the use of large multi-purpose floating platforms in the open ocean is being considered. Such platforms could possibly support a diversified range of commercial activities including energy ... -
Analysis of a Moored and Articulated Multibody Offshore System in Steep Waves
(The American Society of Mechanical Engineers (ASME), 2023)Wave-induced motions and loads on a moored and articulated multibody offshore structure are numerically analyzed, where a coupled mooring–joint–viscous flow solver is used to count for mooring dynamics, joint restrictions, ... -
Automatic Clustering of Metocean Conditions on the Brazilian Coast
(The American Society of Mechanical Engineers (ASME), 2023)This paper introduces a pipeline that assembles a dataset of metocean conditions consisting of wind, wave, and surface currents, and then clusters these data to find the characteristic environmental conditions of each ... -
Wave-By-Wave Prediction in Narrowly Spread Seas Using Fixed- and Drifting-Point Wave Records: Validation Using Physical Measurements
(The American Society of Mechanical Engineers (ASME), 2022)Accurate and reliable phase-resolved prediction of ocean surface waves is crucial for many offshore operations in ocean engineering and marine science. One important application is in optimal control of a power take-off ... -
Influence of Heave Plate on the Flow-Induced Motions of a Floating Offshore Wind Turbine
(The American Society of Mechanical Engineers (ASME), 2022)Flow-induce motions (FIM) small-scale model tests were performed for the Jappaku floating offshore wind turbines (JPK), a FOWT developed to operate in Brazilian waters. This paper aims to investigate the presence of FIM ... -
Lateral Buckling of an Elastic Pipe on a Frictional Seabed
(The American Society of Mechanical Engineers (ASME), 2023)Pipelines tend to buckle laterally under thermal expansion. In existing analytical solutions by Kerr and Hobbs, it is assumed that the seabed resistance q0 to lateral pipe movements is constant in magnitude and opposite ... -
A Simplified Method to Analyze Dynamic Response of VLFS Based on the Kane Method
(The American Society of Mechanical Engineers (ASME), 2022)A two-dimensional (2D) simplified model of the very large floating structure (VLFS) is formulated based on Huston's interpretation of the Kane methodology. In this proposed model, the VLFS is considered as a series of ... -
Numerical Investigation of Ship Waves and Associated Hydrodynamics Over a Sloping Bed With a Non-Hydrostatic Model
(The American Society of Mechanical Engineers (ASME), 2022)The ship waves and related hydrodynamics over a sloping bed are investigated numerically in this paper, and we aim to clarify the characteristics of ship wave deformation and its hydrodynamic effects. Laboratory experiments ... -
Influence on Structural Loading of a Wave Energy Converter by Controlling Variable-Geometry Components and the Power Take-Off
(The American Society of Mechanical Engineers (ASME), 2023)Oceans are harsh environments and can impose significant loads on deployed structures. A wave energy converter (WEC) should be designed to maximize the energy absorbed while ensuring the operating wave condition does not ... -
Numerical Investigations on Suspended Power Cable Configurations for Floating Offshore Wind Turbines in Deep Water Powering an FPSO
(The American Society of Mechanical Engineers (ASME), 2023)Floating offshore wind turbines (FOWTs) are an opportunity for floating production storage and offloading units (FPSOs) to reduce emissions. To avoid long connecting power cables with long transmission distances between a ...