Journal of Offshore Mechanics and Arctic Engineering: Recent submissions
Now showing items 481-500 of 2185
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Assessment of Data-Inherited Uncertainty in Extreme Wave Analysis
(The American Society of Mechanical Engineers (ASME), 2020)Accurate estimation of extreme wave condition is desired for the rational design of offshore structures, but the estimation results are known to have uncertainty from various sources. The quality and quantity of the available ... -
Stern Flap–Waterjet–Hull Interactions and Mechanism: A Case of Waterjet-Propelled Trimaran With Stern Flap
(The American Society of Mechanical Engineers (ASME), 2020)To research the stern flap (SF) and waterjet–hull interaction, unsteady Reynolds-averaged Navier–Stokes (URANS) simulations for a waterjet-propelled trimaran considering sinkage and trim are performed. Uncertainty analysis ... -
Performance of S1210 Profile Used in Current Turbine Blades With Tubes Inserted at a Regular Interval
(The American Society of Mechanical Engineers (ASME), 2020)The annual power output of a current turbine is affected by flow separation followed by the stall condition in an environment of varying current speed. Flow separation appears as the fluid in the boundary layer over the ... -
Analysis of the Effect of a Series of Back Twist Blade Configurations for an Active Pitch-To-Stall Floating Offshore Wind Turbine
(The American Society of Mechanical Engineers (ASME), 2020)For a turbine mounted on a floating platform, extreme induced loads can be increased by up to 1.6 times those experienced by a turbine situated on a fixed base. If these loads cannot be reduced, towers must be strengthened ... -
Inner Flow-Induced Buckling of Fiber-Reinforced Polymeric Catenary Risers
(The American Society of Mechanical Engineers (ASME), 2020)Production and deep-sea mining risers should have sufficient flexibility to avoid severe loading due to vessel motions. Free hanging catenary is the simplest and cheapest configuration because of the ease of installation ... -
Human Reliability Analysis of Ship Maneuvers in Harbor Areas
(The American Society of Mechanical Engineers (ASME), 2020)During a ship life cycle, one of the most critical phases in terms of safety refers to harbor maneuvers, which take place in restricted and congested waters, leading to higher collision and grounding risks in comparison ... -
Mooring Fatigue Assessment Evaluating Chain Twist and Out-of-Plane Bending for a Semi-submersible
(The American Society of Mechanical Engineers (ASME), 2020)A mooring fatigue assessment for mooring chain links of a semi-submersible in Offshore West Africa (OWA) is presented. Three cases that mooring chain links are subjected to pure tension, out-of-plane bending (OPB), and ... -
Fatigue Life Estimation for HFMI-Treated Weldments Considering Weld Toe Magnification Factors
(The American Society of Mechanical Engineers (ASME), 2020)High-frequency mechanical impact (HFMI) post-treatment is a proven method to improve the fatigue life of welded structures. The positive effects of HFMI treatment are influenced by the weld toe geometries and residual ... -
Parametric Estimation of Volterra Kernel for the Dynamic Response of an Offshore Structure Using Laguerre Polynomials
(The American Society of Mechanical Engineers (ASME), 2020)The behavior of a nonlinear dynamic system under arbitrary excitation can be represented by the Volterra series if the Volterra kernels of different orders are known. This study presents a methodology for a direct estimation ... -
Development of the Analysis Procedure for the Ice-Induced Fatigue Damage of a Ship in Broken Ice Fields
(The American Society of Mechanical Engineers (ASME), 2020)A simplified analysis method was developed to evaluate the fatigue damage of an ice-going ship under broken ice conditions. The ice resistance, which is available in the early design stages of an ice-going vessel, and the ... -
Fluid–Structure Interaction Effects on Free Vibration of Containerships
(American Society of Mechanical Engineers (ASME), 2019)The interaction between fluid and structure affects the vibration response of the structure due to the additional hydrodynamic pressure. These effects are accounted for by incorporating the so-called added mass into the ... -
Influence of Sea Current on Stabilization of Moments and Forces in Risers
(American Society of Mechanical Engineers (ASME), 2019)One of the important aspects in the design of floating, production, storage, and offloading (FPSO) systems is to ensure a fairly constant load on risers despite the base motion caused by sea waves. The paper presents the ... -
Soil–Structure Interaction Effects in Offshore Wind Support Structures Under Seismic Loading
(American Society of Mechanical Engineers (ASME), 2019)This paper explores the performance of a 10 MW offshore wind turbine (OWT) supported either on a large diameter monopile or a 4-legged jacket emphasizing on the nonlinear response of its belowseabed foundation. The seabed ... -
Numerical Investigation of Sediment Transport of Sandy Beaches by a Tsunami-Like Solitary Wave Based on Navier–Stokes Equations
(American Society of Mechanical Engineers (ASME), 2019)To improve our current understanding of tsunami-like solitary waves interacting with sandy beach, a nonlinear three-dimensional numerical model based on the computational fluid dynamics (CFD) tool OpenFOAM® is first ... -
Scattering of Surface Gravity Waves by a Pair of Floating Porous Boxes
(American Society of Mechanical Engineers (ASME), 2019)A numerical model is developed based on multidomain boundary element method (MBEM) to investigate the scattering of surface gravity waves by a pair of floating porous boxes. This study reveals that there is a significant ... -
A Three-Step Hybrid Method to Study the Influence of Green Water Impact on a Large Containership in Time Domain
(American Society of Mechanical Engineers (ASME), 2019)The paper introduces a simplified coupled computational fluid dynamics–boundary element method–finite element method (CFD–BEM–FEM)-based approach to study the effect green water induced loading on global structural responses ... -
Technique for Early Consideration of Human Reliability: Applying a Generic Model in an Oil Tanker Operation to Study Scenarios of Collision
(American Society of Mechanical Engineers (ASME), 2019)In the oil sector, analysis, evaluation, and management of risk are vital, considering the accidents potential severity with respect to human life, environment and property. Since most accidents in this sector include human ... -
Coupling Effect of Vortex-Induced Vibration of a Submarine Pipeline and Local Scour Under Steady Current
(American Society of Mechanical Engineers (ASME), 2019)The dynamic interaction between pipeline vibration and local scour is investigated numerically. The sediment scour model is adopted to calculate the local scour below pipeline. The general moving objects (GMO) model fully ... -
Numerical Simulations of Breaking Waves and Steep Waves Past a Vertical Cylinder at Different Keulegan–Carpenter Numbers
(American Society of Mechanical Engineers (ASME), 2019)A three-dimensional (3D) numerical two-phase flow model based on solving unsteady Reynolds-averaged Navier–Stokes (URANS) equations has been used to simulate breaking waves and steep waves past a vertical cylinder on a ... -
New Moonpool Design of Drillship for Operability Improvement
(American Society of Mechanical Engineers (ASME), 2019)This study suggests three different designs of the moonpool to reduce the internal flow of the moonpool. The experimental and numerical studies were performed to improve the dillship's operability by the flow reduction in ...