Journal of Offshore Mechanics and Arctic Engineering: Recent submissions
Now showing items 581-600 of 2185
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Reliability Analysis of Pipelines With Local Corrosion Defects Under External Pressure
(The American Society of Mechanical Engineers (ASME), 2019)This paper aims at assessing the reliability of pipelines with local corrosion defects subjected to external pressure. Several collapse strength models are calibrated and then used to formulate the reliability problem of ... -
The 2010 Oil Spill in the Gulf of Mexico: Flow-Rate Estimation Based on Satellite-Images Analysis1
(The American Society of Mechanical Engineers (ASME), 2019)The Deepwater Horizon Mobile Offshore Drilling Unit (MODU) was one of several classes of floatable drilling systems. The explosion on April 20, 2010 led to fatalities and the worst oil spill in the U.S. We present an ... -
Effect of Fluke Inclination on Behavior of Drag Anchor in Uniform Clay Under Unidirectional and Combined Loading
(The American Society of Mechanical Engineers (ASME), 2019)Prediction of trajectory of drag anchor is important for the design and selection of drag anchor. Prediction based on yield envelope characterizing the anchor behavior under combined loading provides a promising method. ... -
Numerical Analysis of Second-Order Mean Wave Forces by a Stabilized Higher-Order Boundary Element Method
(The American Society of Mechanical Engineers (ASME), 2019)A stabilized higher-order boundary element method (HOBEM) based on cubic shape functions is presented to solve the linear wave-structure interaction with the presence of steady or slowly varying velocities. The m-terms ... -
Offshore Wind Turbine Nonlinear Wave Loads and Their Statistics
(The American Society of Mechanical Engineers (ASME), 2019)The development of an analytical model for the prediction of the stochastic nonlinear wave loads on the support structure of bottom mounted and floating offshore wind turbines is presented. Explicit expressions are derived ... -
Hydrodynamical Aspects of Pontoon Optimization for a Side-Anchored Floating Bridge
(The American Society of Mechanical Engineers (ASME), 2019)Long floating bridges supported by pontoons with span-widths between 100 m and 200 m are discrete hydro-elastic structures with many critical eigenmodes. The response of the bridge girder is dominated by vertical eigenmodes ... -
Valve Operability During a Fire
(The American Society of Mechanical Engineers (ASME), 2019)Fire and explosion are a major cause of concern for refinery, gas processing, petrochemical, and gas installations. The safest way to deal with a fire is to prevent it. However, fire prevention strategies are not always ... -
Loading and Blade Deflection of a Tidal Turbine in Waves
(The American Society of Mechanical Engineers (ASME), 2019)A coupled numerical model has been developed and validated to study the fluid–structural interaction responses of a three-bladed tidal turbine in aligned waves and current. The unsteady blade element momentum (BEM) theory ... -
Effect of Wake Alignment on Turbine Blade Loading Distribution and Power Coefficient
(The American Society of Mechanical Engineers (ASME), 2019)This paper describes the use of a lifting line model in order to determine the optimum loading on a marine turbine's blades. The influence of the wake and its geometry is represented though the use of a full wake alignment ... -
Numerical Investigation on Vortex-Induced Vibration caused by Vessel Motion for a Free Hanging Riser Under Small Keulegan-Carpenter Numbers
(The American Society of Mechanical Engineers (ASME), 2019)A free-hanging riser (FHR) is a typical riser configuration seen in the disconnected drilling riser, the water-intake riser, and the deep-sea mining riser. In offshore productions, these marine risers will move back and ... -
Prediction of Combined Inline and Crossflow Vortex-Induced Vibrations Response of Deepwater Risers
(The American Society of Mechanical Engineers (ASME), 2019)Deepwater risers are susceptible to vortex-induced vibrations (VIV) when subjected to currents. When responding at high modes, fatigue damage in the inline (IL) direction may become equally important as the crossflow (CF) ... -
Extreme Wave Generation, Breaking, and Impact Simulations Using Wave Packets in REEF3D
(The American Society of Mechanical Engineers (ASME), 2019)On several occasions, freak waves have been observed in the past, some causing severe damage. In order to model such extreme wave conditions, one possibility is to use focused waves of first- or second-order based on ... -
Wave Drift Forces' Calculation on Two Floating Bodies Based on the Boundary Element Method—Attempt for Improvement of the Constant Panel Method
(The American Society of Mechanical Engineers (ASME), 2019)An improved constant panel method for more accurate evaluation of wave drift forces and moment is proposed. The boundary element method (BEM) of solving boundary integral equations is used to calculate velocity potentials ... -
Influence of Wave-Induced Uplift Forces on Upheaval Buckling of Pipelines Buried in Sandy Seabeds
(The American Society of Mechanical Engineers (ASME), 2019)This study focuses on the buckling of pipelines in shallow waters subjected to surface gravity waves. The wave-induced uplift forces on pipelines buried in sandy seabeds are investigated using Biot's consolidation model. ... -
An Efficient Convex Formulation for Model-Predictive Control on Wave-Energy Converters1
(The American Society of Mechanical Engineers (ASME), 2018)Model-predictive control (MPC) has shown its strong potential in maximizing energy extraction for wave-energy converters (WECs) while handling hard constraints. However, the computational demand is known to be a primary ... -
On Modeling and Simulation of Innovative Ship Rescue System
(The American Society of Mechanical Engineers (ASME), 2018)Inflatable devices that provide reserve buoyancy to damaged ships, preventing capsizing and/or sinking, along with lifting wreckages from the seabed, were studied within the framework of the European funded project “SuSy” ... -
Lateral Earth Pressure Coefficient of Soils Subjected to Freeze–Thaw
(The American Society of Mechanical Engineers (ASME), 2018)Artificial frozen soils (AFS) have been used widely as temporary retaining walls in strata with soft and water-saturated soil deposits. After excavations, frozen soils thaw, and the lateral earth pressure penetrates through ... -
Key Techniques in Simulating Comprehensive Anchor Behaviors by Large Deformation Finite Element Analysis
(The American Society of Mechanical Engineers (ASME), 2018) -
Dynamic Analysis of an Offshore Platform With Compressor Packages—Application of the Substructure Method
(The American Society of Mechanical Engineers (ASME), 2018)This paper presents the substructure-based dynamic analysis of an offshore platform with compressor packages. Three typical substructure methods, the Guyan condensation method, the fixed-interface component mode synthesis ... -
Hydrodynamics of Flexible Pipe With Staggered Buoyancy Elements Undergoing Vortex-Induced Vibrations
(The American Society of Mechanical Engineers (ASME), 2018)Flexible pipe with staggered buoyancy elements such as lazy wave riser and drilling riser has been widely used in ocean engineering. Under the influence of sea current, both of the buoyancy elements and the riser may ...