Journal of Offshore Mechanics and Arctic Engineering: Recent submissions
Now showing items 501-520 of 2185
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Efficient Wave Modeling Using Nonhydrostatic Pressure Distribution and Free Surface Tracking on Fixed Grids
(American Society of Mechanical Engineers (ASME), 2019)For the estimation of wave loads on offshore structures, relevant extreme wave events need to be identified. In order to achieve this, long-term wave simulations of relatively large scales need to be performed. Computational ... -
Position Prediction of Marine Seismic Streamer Cables Using Various Kalman Filter Methods
(American Society of Mechanical Engineers (ASME), 2019)Towed seismic streamer cables are extensively employed for offshore marine petroleum exploration. With the increasing need for accurate streamer steering due to rising number and length of streamers and decreasing intrastreamer ... -
Experimental Assessment of the Performance of CECO Wave Energy Converter in Irregular Waves
(American Society of Mechanical Engineers (ASME), 2019)The performance assessment of a wave energy converter (WEC) is a key task. Depending on the layout of the WEC system and type of power take-off (PTO) mechanism, the determination of the absorbed power at model scale involves ... -
On the Development of an Efficient Surrogate Model for Predicting Long-Term Extreme Loads on a Wave Energy Converter
(American Society of Mechanical Engineers (ASME), 2019)Accurate prediction of long-term extreme loads is essential for the design of wave energy converters (WECs), but it is also computationally demanding due to the low probabilities associated with their occurrence. Although ... -
Special Issue Honoring Professor Torgeir Moan
(American Society of Mechanical Engineers (ASME), 2019) -
Fatigue Analysis of a Jacket Structure to Linear and Weakly Nonlinear Random Waves
(American Society of Mechanical Engineers (ASME), 2019)Jacket structures have been widely used in oil and gas industry and are increasingly becoming competitive as a support structure of wind turbines at different water depths. These types of structures usually fix in transition ... -
Composite Patch Repair for Underwater Aluminum Structures
(American Society of Mechanical Engineers (ASME), 2019)Both experimental and numerical studies were conducted to investigate the effectiveness of composite patch repair on underwater structures, especially aluminum alloy structures. Physical samples were prepared using 5XXX ... -
Analytical and Experimental Analysis of Static Friction Forces of Moving Cables Inside Curved Pipes
(American Society of Mechanical Engineers (ASME), 2019)In-pipe robots are a powerful tool for hydrate plug removal inside ultradeepwater pipes. Most of these robots operate with the energy supplied by umbilical cables. The present work focuses on the development of a general ... -
Basic Characteristics of the Primary Conversion of an Oscillating Water Column Type Wave Energy Converter Installed on a Wave-Dissipating Double Caisson
(American Society of Mechanical Engineers (ASME), 2019)Several types of oscillating water column (OWC) type wave energy converters (WECs) are researched and developed in the world. They are floating types and fixed types. In case of a fixed type, wave-dissipating caissons could ... -
Application of Boundary Element Method for Determination of the Wavemaker Driving Signal
(American Society of Mechanical Engineers (ASME), 2019)A method for the generation of steep nonlinear broad-banded wave trains having an arbitrary prescribed shape is developed. It is shown that the second-order contributions to the velocity field are negligible in deep water, ... -
Effect of Surface Wave on Development of Turbulent Boundary Layer Over a Train of Rib Roughness
(American Society of Mechanical Engineers (ASME), 2019)In this paper, detailed experimental results are reported to study the effect of the surface wave of different frequencies on unidirectional current over the bed-mounted train of rib roughness. The model roughness used in ... -
Finite Element Analysis of Flexible Pipes Under Compression: Influence of the Friction Coefficient
(American Society of Mechanical Engineers (ASME), 2019)In order to study the compressive behavior of flexible pipes, a nonlinear finite element model was developed. This fully tridimensional model recreates a five-layer flexible pipe with two tensile armor layers, an external ... -
Wind Turbine Controller to Mitigate Structural Loads on a Floating Wind Turbine Platform
(American Society of Mechanical Engineers (ASME), 2019)This paper summarizes the control design work that was performed to optimize the controller of a wind turbine on the WindFloat structure. The WindFloat is a semisubmersible floating platform designed to be a support structure ... -
Discussion: “Unsteady RANS Simulations of Wells Turbine Under Transient Flow Conditions” (Hu and Li, ASME J. Offshore Mech. Arct. Eng., 140(1), p. 011901)
(American Society of Mechanical Engineers (ASME), 2019)The work by Hu and Li (2018, “Unsteady RANS Simulations of Wells Turbine Under Transient Flow Conditions,” ASME J. Offshore Mech. Arct. Eng., 140(1), p. 011901) presents the numerical simulation of a high-solidity Wells ... -
Mooring System Engineering for Offshore Structures
(American Society of Mechanical Engineers (ASME), 2019) -
Modeling of a Semisubmersible Floating Offshore Wind Platform in Severe Waves
(American Society of Mechanical Engineers (ASME), 2019)Floating offshore wind platforms may be subjected to severe sea states, which include both steep and long waves. The hydrodynamic models used in the offshore industry are typically based on potential-flow theory and/or ... -
Real-Time Parameter Estimation of a Nonlinear Vessel Steering Model Using a Support Vector Machine
(American Society of Mechanical Engineers (ASME), 2019)The least-square support vector machine (LS-SVM) is used to estimate the dynamic parameters of a nonlinear marine vessel steering model in real-time. First, maneuvering tests are carried out based on a scaled free-running ... -
Numerical Investigation on Weld-Induced Imperfections in Aluminum Ship Plates
(American Society of Mechanical Engineers (ASME), 2019)The present work aims at better understanding and predicting the thermal and structural responses of aluminum components subjected to welding, contributing to the design and fabrication of aluminum ships such as catamarans, ... -
Simulation of Wind, Waves, and Currents During Hurricane Sandy for Planned Assessment of Offshore Wind Turbines
(American Society of Mechanical Engineers (ASME), 2019)The simulation of wind and wave fields for the evaluation of jacket-supported offshore wind turbines during Hurricane Sandy of 2012 is the focus of this study. For realistic load assessment of offshore wind turbines, it ... -
Determination of Reaction Forces of a Deck Crane in Wave Motion Using Screw Theory
(American Society of Mechanical Engineers (ASME), 2019)In this paper, we present a method for calculating reaction forces for a crane mounted on a ship moving in waves. The method is used to calculate the reaction forces between the crane base and the vessel deck. This includes ...