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VIV analysis of pipelines under complex span conditions
boundary condition (BC) fatigue limit state (FLS) force model (FM) kilometer post (KP) mode shape natural frequency response model (RM) vortex-induced vibration (VIV) ultimate limit state (ULS) unit stress
2011/9/13
Spans occur when a pipeline is laid on a rough undulating seabed or when upheaval buckling occurs due to constrained thermal expansion. This not only results in static and dynamic loads on the flowlin...
Wind-Stress coefficients over Sea surface near Neutral Conditions—A Revisit
Wind-Stress coefficients Neutral Conditions—A Revisit Sea surface
2009/2/16
A scaling law of wind-stress coefficients is presented to illustrate explicitly that the coefficient increases with wind velocity and decreases with fetch; physical reasonings of both trends are discu...
Model Studies of the Wind-Driven Transient Circulation in the Middle Atlantic Bight. Part 1：Adiabatic Boundary Conditions
Wind-Driven Transient Circulation Middle Atlantic Bight Adiabatic Boundary Conditions
2009/2/9
A numerical model of the wind-driven transient ocean circulation in the Middle Atlantic Bight is described. The model incorporates realistic topography and covers the continental shelf between the coa...
Observations of the Directional Distribution of Ocean-Wave Energy in Fetch-Limited Conditions
Directional Distribution Ocean-Wave Energy Fetch-Limited Conditions
2009/1/22
Directional energy distributions of wind-generated waves were observed with a relatively high directional resolution in fairly homogeneous and stationary wind fields in fetch-limited conditions using ...
On Tidal Motion in a Stratified Inlet, with Particular Reference to Boundary Conditions
Tidal Motion Stratified Inlet Boundary Conditions
2009/1/20
The method of characteristics is used to provide radiation-type boundary conditions appropriate to a portion of a two-layer inlet subject to tidal effects governed by one-dimensional shallow-water the...
Eastern Boundary Conditions and Weak Solutions of the Ideal Thermocline Equations
Boundary Conditions Weak Solutions Ideal Thermocline Equations
2009/1/13
It is argued that the ideal fluid thermocline equations have “weak” (i.e., nondifferentiable) solutions that satisfy no mass-flux boundary conditions at the East. This conclusion is based on a local a...
Initial Conditions for a General Circulation Model of Tropical Oceans
Initial Conditions General Circulation Model Tropical Oceans
2009/1/6
A general circulation model of the tropical Pacific Ocean, which realistically simulates El Niño of 1982–83, has been used to determine how different initial conditions affect the model. Given ...
Seabed Stresses in Combined Wave and Steady Flow Conditions on the Nova Scotia Continental Shelf：Field Measurements and Predictions
Seabed Stresses Combined Wave Steady Flow Continental Shelf
2009/1/5
A tripod holding electromagnetic flowmeters at two heights within 1 m above the seabed has been deployed at two shallow sites (25 and 45 m depths) on the continental shelf off Nova Scotia, Canada. Wav...
Testing a Coupled Ice-Mixed-Layer Model Under Subarctic Conditions
Coupled Ice-Mixed-Layer Model Subarctic Conditions
2009/1/5
A one-dimensional oceanic mixed-layer model has been coupled with a thermodynamic sea ice model in order to study the seasonal cycle of ice-ocean interaction in the subarctic ocean. The ice thickness ...
The Role of Mixed Boundary Conditions in Numerical Models of the Ocean’s Climate
Mixed Boundary Conditions Numerical Models Ocean’s Climate
2008/12/24
Several simple numerical experiments are conducted, using both single- and double-hemisphere ocean basins under symmetric steady forcing to study de ocean's thermohaline circulation. It is shown that ...
The Influence of Boundary Conditions on Midlatitude Jet Separation in Ocean Numerical Models
Boundary Conditions Midlatitude Jet Separation Ocean Numerical Models
2008/12/24
The separation Point of a midlatitude jet from the western boundary in ocean numerical models depends upon both the governing equations and the vertical coordinate used. Systematic differences in the ...
The Response of a Global Ocean General Circulation Model to Climatological Surface Boundary Conditions for Temperature and Salinity
ocean general circulation model Climatological Surface Boundary Conditions
2008/12/17
The response of a global ocean general circulation model (OGCM) to different surface heat and freshwater fluxes is examined. The aim is to determine the most appropriate way to spin up an OGCM prior t...
Instability of the Thermohaline Circulation with Respect to Mixed Boundary Conditions：Is It Really a Problem for Realistic Models?
Thermohaline Circulation Mixed Boundary Conditions Realistic Models
2008/12/15
A global primitive equations oceanic GCM and a simple four-box model of the meridional circulation are used to examine and analyze the instability of the thermohaline circulation in an ocean model wit...
Thermohaline Structure of an Eddy-Resolving North Atlantic Model：The Influence of Boundary Conditions
Thermohaline Structure Eddy-Resolving North Atlantic Model Boundary Conditions
2008/12/12
A T–S volumetric census, with a resolution of 0.2°C and 0.1 psu, for years 20-25 of the World Ocean Circulation Experiment Community Modeling Effort eddy-resolving simulation of the equatorial and Nor...
Model Study of Flow Conditions Causing the Large Meander of the Kuroshio South of Japan
large-meander Flow Conditions non-large-meander
2008/12/11
The upstream conditions for large-meander (LM) and non-large-meander (NLM) paths of the Kuroshio south of Japan were examined by calculating the current axis with a steady model imposed upstream flow ...