Journal of Offshore Mechanics and Arctic Engineering: Recent submissions
Now showing items 961-980 of 2185
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Efficient Predictions of Unsteady Viscous Flows Around Bluff Bodies by Aerodynamic Reduced Order Models
(The American Society of Mechanical Engineers (ASME), 2014)This paper describes an efficient reduced order model (ROM) applied in the aerodynamic analysis of bluff bodies. The proposed method, which is based on eigensystem realization algorithm (ERA), uses the impulse response of ... -
Rigid Body Water–Surface Impact Dynamics: Experiment and Semianalytical Approximation
(The American Society of Mechanical Engineers (ASME), 2014)An experimental study of the dynamics of a generic rigid body during water impact and an equivalentradius approximate analytical procedure is developed and calibrated in this study. The experimental tests in a wave basin ... -
Numerical Analysis and Scaled High Resolution Tank Testing of a Novel Wave Energy Converter
(The American Society of Mechanical Engineers (ASME), 2013)This paper presents a novel point absorber wave energy converter (WEC), developed by Columbia Power Technologies (COLUMBIA POWER), in addition to the related numerical analysis and scaled wave tank testing. Three hydrodynamic ... -
Influence of Model Geometry and Boundary Conditions on the Ultimate Strength of Stiffened Panels Under Uniaxial Compressive Loading
(The American Society of Mechanical Engineers (ASME), 2013)The aim of this paper is to determine an appropriate configuration of the boundary conditions and geometric model to calculate the ultimate strength of a continuous stiffened panel under compressive loading in the finite ... -
Experimental and Numerical Plastic Response and Failure of Laterally Impacted Rectangular Plates
(The American Society of Mechanical Engineers (ASME), 2013)Experimental and numerical results of drop weight impact test are presented on the plastic behavior and fracture of rectangular plates stuck laterally by a mass with a hemispherical indenter. Six specimens were tested in ... -
Effects of Diameter to Thickness Ratio and External Pressure on the Velocity of Dynamic Buckle Propagation in Offshore Pipelines
(The American Society of Mechanical Engineers (ASME), 2013)In this paper, a numerical study of the dynamic buckle propagation, initiated in long pipes under external pressure, is presented. For a long pipe, due to the high exerted pressure, local instability is likely to occur; ... -
Turbulent Flow Around a Semi Submerged Rectangular Cylinder
(The American Society of Mechanical Engineers (ASME), 2013)The present work is motivated by phenomena occurring in the flow field around structures partly submerged in water. A threedimensional (3D) unsteady flow around a rectangular cylinder is studied for four different submergence ... -
Reliability Based Factors of Safety for Vortex Induced Vibration Fatigue Using Field Measurements
(The American Society of Mechanical Engineers (ASME), 2013)The development of a vortex induced vibration (VIV) fatigue factor of safety (FoS) consistent with stateoftheart industry design practice is cast within the coherent framework of reliability analysis. The proposed methodology ... -
Application of Groebner Basis Methodology to Nonlinear Static Cable Analysis
(The American Society of Mechanical Engineers (ASME), 2013)The governing equations for large deflections of cables have a highly nonlinear and coupled nature, which precludes exact analytical solutions except in a few simplified cases. The present study demonstrates the utility ... -
Penetration and Removal of the Mooring Dolphin Platform With Three Caisson Foundations
(The American Society of Mechanical Engineers (ASME), 2013)Mooring dolphin platforms (MDPs) with three caisson foundations were installed in the icedrifting Bohai Sea of China. Before installation, prototype tests of penetration and removal processing were conducted near the design ... -
Fatigue Assessment of Aluminum Ship Details by Hotspot Stress Approach
(The American Society of Mechanical Engineers (ASME), 2013)This paper presents a robust methodology for fatigue assessment of aluminum ship details using a hotspot stress range approach. A series of fatigue tests of a typical aluminum ship detail was carried out to obtain a design ... -
Effects of Joint Discontinuity on the Vibration Power Flow Propagation in a Submerged Cylindrical Shell
(The American Society of Mechanical Engineers (ASME), 2013)The propagation characteristics of the vibration power flow in a submerged cylindrical shell with joint discontinuity are investigated by the wave propagation approach. The motion of the cylindrical shell and the pressure ... -
Performance Enhancements and Validations of a Generic Ocean Wave Energy Extractor
(The American Society of Mechanical Engineers (ASME), 2013)This paper evaluates two aspects of enhancements made to a generic oceanwave energy extraction device, developed recently at University of California (UC)Berkeley with features reported in Yeung et al. (2010, “Design, ... -
Interference Between Two Stationary or Elastically Supported Rigid Circular Cylinders of Unequal Diameters in Tandem and Staggered Arrangements
(The American Society of Mechanical Engineers (ASME), 2013)Analysis of model test results was carried out to investigate the hydrodynamic interaction between pairs of fixed or elastically supported rigid cylinders of dissimilar diameters in a water flume. The two cylinders are ... -
Multicylinder Flow Induced Motions: Enhancement by Passive Turbulence Control at 28,000<Re<120,000
(The American Society of Mechanical Engineers (ASME), 2013)The VIVACE converter was introduced at OMAE2006 as a single, smooth, circularcylinder module. The hydrodynamics of VIVACE is being improved continuously to achieve higher density in harnessed hydrokinetic power. Intercylinder ... -
Latching Control of an Oscillating Water Column Spar Buoy Wave Energy Converter in Regular Waves
(The American Society of Mechanical Engineers (ASME), 2013)The present paper concerns an oscillating water column (OWC) sparbuoy, possibly the simplest concept for a floating OWC wave energy converter. It is an axisymmetric device (and so insensitive to wave direction) consisting ... -
Notes on the Prediction of Extreme Ship Response
(The American Society of Mechanical Engineers (ASME), 2013)In this note the relation between two simple approaches to estimate the extreme ship response used when no, or a limited, amount of data are available is discussed. The first one employs the long term distribution of the ... -
Phase Averaged Flow Analysis in an Oscillating Water Column Wave Energy Converter
(The American Society of Mechanical Engineers (ASME), 2013)This paper presents the application of phase averaging to experimental data obtained during scale model testing of a forward facing bent duct oscillating water column (OWC). Phase averaging is applied to both wave probe ... -
Evaluation of Weld Root Failure Using Battelle Structural Stress Method
(The American Society of Mechanical Engineers (ASME), 2013)Weld related fatigue failure is one of the most common concerns in welded structures. From the fatigue design point of view, weld toe failure is preferable to weld root failure. Base plate thickness is a controlling parameter ... -
Influence of Proximity of the Seabed on Hydrodynamic Forces on a Submarine Piggyback Pipeline Under Wave Action
(The American Society of Mechanical Engineers (ASME), 2013)Experimental investigations were mainly carried out to clarify the influence of the seabed proximity on hydrodynamic forces on a submarine piggyback pipeline under regular and irregular wave action. Nondimensional force ...