Journal of Offshore Mechanics and Arctic Engineering: Recent submissions
Now showing items 641-660 of 2185
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Drag Reduction and Vortex-Induced Vibration Suppression Behavior of Longitudinally Grooved Suppression Technology Integral to Drilling Riser Buoyancy Units
(The American Society of Mechanical Engineers (ASME), 2018)Drilling risers are regularly deployed in deep water (over 1500 m) with large sections covered in buoyancy modules. The smooth cylindrical shape of these modules can result in significant vortex-induced vibration (VIV) ... -
Nonlinear Piecewise Restoring Force in Hydrokinetic Power Conversion Using Flow-Induced Vibrations of Two Tandem Cylinders
(The American Society of Mechanical Engineers (ASME), 2018)Flow-induced vibrations (FIVs) of two tandem, rigid, circular cylinders with piecewise continuous restoring force are investigated for Reynolds number 24,000 ≤ Re ≤ 120,000 with damping, and restoring force function as ... -
Computational Fluid Dynamics Simulations of Regular and Irregular Waves Past a Horizontal Semi-Submerged Cylinder
(The American Society of Mechanical Engineers (ASME), 2018)Two-dimensional (2D) numerical simulations have been performed to investigate both regular and irregular waves past a fixed horizontally semisubmerged circular cylinder. The 2D simulations are carried out by solving ... -
Dynamic Response of Steel Catenary Riser in an Internal Wave Field
(The American Society of Mechanical Engineers (ASME), 2018)This paper proposes a dynamic model for steel catenary risers (SCRs) based on the principle of virtual work, where the equations of motion are obtained by combining Euler's equation and initial conditions. The motion ... -
Subsea Pipeline Lateral Buckling Design—Strain Concentration or Strain Capacity Reduction Factors
(The American Society of Mechanical Engineers (ASME), 2018) -
Fatigue Design and Analysis of Offshore Pipelines and Risers Subjected to Waves and Currents
(The American Society of Mechanical Engineers (ASME), 2018)The industry consensus would appear that the effect of currents on wave-induced fatigue damage accumulation is assumed as insignificant and can be ignored. Only when dealing with stability, ultimate limit state design, and ... -
An Investigation on Creep and Creep-Rupture Behaviors of HMPE Ropes
(The American Society of Mechanical Engineers (ASME), 2018)Creep tests of high modulus polyethylene (HMPE) samples are performed to obtain the corresponding creep and creep-rupture curves. The results show that the secondary creep stage is especially pronounced, and its creep rate ... -
Wave-Induced Accelerations of a Fish-Farm Elastic Floater: Experimental and Numerical Studies
(The American Society of Mechanical Engineers (ASME), 2018)Numerical simulations and experiments of an elastic circular collar of a floating fish farm are reported. The floater model without netting structure is moored with nearly horizontal moorings and tested in regular deep-water ... -
Influence of Vortex-Induced Loads on the Motion of SPAR-Type Wind Turbine: A Coupled Aero-Hydro-Vortex-Mooring Investigation
(The American Society of Mechanical Engineers (ASME), 2018)The nonlinear coupling effect between degree-of-freedom (DOFs) and the influence of vortex-induced loads on the motion of SPAR-type floating offshore wind turbine (FOWT) are studied based on an aero-hydro-vortex-mooring ... -
Centrifuge Model Study on the Effect of Lattice Leg and Sleeve on the Postconsolidation Bearing Capacity of Spudcan Foundation
(The American Society of Mechanical Engineers (ASME), 2018)Up to now, the postconsolidation bearing capacity enhancement of jack-up spudcan foundation has been explored using centrifuge model tests and numerical analyses, which however ignored the realistic jack-up lattice leg. ... -
Effects of Soil Profile Variation and Scour on Structural Response of an Offshore Monopile Wind Turbine
(The American Society of Mechanical Engineers (ASME), 2018)This paper presents an engineering approach to study the effects of soil profile variation and scour on structural response of an offshore monopile wind turbine. A wind-wave model for finite water depth is proposed to ... -
Numerical Analysis of a Vessel-Shaped Offshore Fish Farm
(The American Society of Mechanical Engineers (ASME), 2018)The aquaculture industry is aiming to move fish farms from nearshore areas to open seas because of many attractive advantages in the open water. However, one major challenge is to design the structure to withstand the ... -
Springing Responses Analysis and Segmented Model Test on a 550,000 Dead Weight Tonnage Ore Carrier
(The American Society of Mechanical Engineers (ASME), 2018)In hydroelastic model tests, segmented ship models are usually used to make sure that the model scale and the full size ship satisfy the similarity law of structural natural frequency and distribution of ship bending ... -
Ultimate Bearing Capacity Assessment of Hull Girder With Asymmetric Cross Section
(The American Society of Mechanical Engineers (ASME), 2018)The objective of this study is to investigate the variation of neutral axis of ship hull girder due to asymmetric geometry or asymmetric load, and its influence on the ultimate strength (ULS) of hull girder. In order to ... -
The Influence of the Ship's Speed and Distance to an Arbitrarily Shaped Bank on Bank Effects
(The American Society of Mechanical Engineers (ASME), 2018)In shallow and restricted waterways, the water displaced by a sailing ship is squeezed under and along its hull. These confinements result in increased velocities of the return flow along the hull and the induced pressure ... -
Two Tandem Cylinders With Passive Turbulence Control in Flow-Induced Vibration: Relation of Oscillation Patterns to Frequency Response
(The American Society of Mechanical Engineers (ASME), 2018)Flow-induced vibrations (FIV) are conventionally destructive and should be suppressed. Since 2006, the Marine Renewable Energy Laboratory (MRELab) of the University of Michigan has been studying FIV of multiple cylinders ... -
A Rubber Bag for Liquid Cargo to Improve Ship Collision Resistance
(The American Society of Mechanical Engineers (ASME), 2018)Collisions and grounding accidents of ships, but also the failure of the hull-integrity, can lead to oil leakage. Examples are the Rena in 2011, the Hebei Spirit in 2007, and the much known accident of the Prestige in 2002. ... -
Wave Motion Control Over Submerged Horizontal Plates
(The American Society of Mechanical Engineers (ASME), 2018)The interaction of surface gravity waves with horizontal pitching plate for actively control waves is investigated based on the linearized theory of water waves. The three-dimensional (3D) problem is formulated for the ... -
Weight-Estimation Method of FPSO Topsides Considering the Work Breakdown Structure
(The American Society of Mechanical Engineers (ASME), 2018) -
Detailed Study on Breaking Wave Interactions With a Jacket Structure Based on Experimental Investigations
(The American Society of Mechanical Engineers (ASME), 2018)Wave breaking is one of the major concerns for offshore structures installed in shallow waters. Impulsive breaking wave forces sometimes govern the design of such structures, particularly in areas with a sloping sea bottom. ...