... & gas offshore structure simulation wind tunnel test estimation drag coefficient fpso boundary layer reynolds number experiment current load floating production system cfd result shear component offshore technology conference coefficient velocity profile subsea system Cao , Y...

... be achieved if 2D stability methods are relied upon. For small diameter pipelines, less than 10 cm for example, or for cables; a significant limitation in the current recommend practice is that the wave velocity correction due to the seabed boundary layer effect is not accounted for. The specific gravity...

... at high Reynolds number. equation boundary layer mooring system high reynolds number turbulence model subsea system cylinder production logging openfoam circular cylinder coefficient time history transition model flow regime reynolds number upstream oil & gas production monitoring...

... of production facilities located in the Gulf of Mexico The investigation found that the provisions of API RP 2MET do not provide a good representation of the structure of the hurricane boundary layer. A major reason that the provisions of API RP 2MET do not model the hurricane boundary layer well...

... as it wil be explained in this work. For the recent development of PBM applied to separation and wall/film interaction see Dorao et al. (2009) and Patruno et al. (2009a, 2009b, 2009c). separation and treating boundary layer separator variation background fluid upstream oil & gas experiment...

... industry-accepted tools for frequency domain VIV analysis (Shear7). upstream oil & gas turbulence model configuration marine riser lift coefficient cfd viscosity eddy viscosity otc 18348 equation boundary layer reynolds calculation riser cross-section boundary engineering...

... be represented by a fourth order differential equation with nonlinear forcing but a method is presented which assumes that the complete response can be broken down into distinct phases from "early motion" to "taut line" to 'yield and breaking", The selection of appropriate force coefficients and boundary layer...

... failure maps in [3] and [4]. shape factor wedge angle ice load wedge indentor strength indentor ice failure mode annula cylindrical indentor aspect ratio contact area strain rate boundary layer failure mode single wedge indentor ice force rubble ice ice contact unbroken ice...

.... The experimental arrangement and different test conditions achieved are major topics of the presentation. The influence of seabed roughness (boundary layer effects) on both oscillatory and steady loads have been investigated for a pipe on a flat seabed. The measured forces do not conform to the simple formulae...

... ABSTRACT The flow boundary layer was studied with measurements of tidal current and wave velocity made at 0.10, 0.25, 0.50, 1.00, 3.00 and 5.00 m above the seafloor at two locations in the North Sea in 70 m and 102 m water depths. The data cover a range of combined current and wave conditions...

... ABSTRACT The objective of the field measurement program was to provide accurate data for flow velocities in the seabed boundary layer and other parameters having influence on the flow boundary layer, especially storm waves, suspended sediment concentrations and bottom roughness. Measurements...

... ABSTRACT The stress exerted on the seabed by currents in a turbulent oceanic bottom boundary layer influences many aspects of offshore operations. It is important that those stress components containing a vertical velocity term be quantified so that, combined with sediment properties, rates...

... ABSTRACT The paper summarises the results of a laboratory study of the separate and combined effects of bed proximity and large velocity gradients on the frequency of vortex shedding from pipeline spans immersed in the thick boundary layers of tidal currents. Tests have been carried out using...

... in this paper are based on the extensive wind tunnel model tests of offshore gas/oil production platforms performed by the Environmental Aerodynamics Group, Cranfield Institute of Technology, England. Introduction The large scale movements of the air in the Earth's boundary layer result from pressure...

... platform. To study the wind loads, a representative mobile platform modeled after a Marathon 116-C class jack-up drilling rig was employed. A wind tunnel program was designed and executed featuring a marine atmospheric boundary layer and a compliant sea surface simulation. Six components of force...

... Abstract The processes of scour hole formation are divided into components and discussed. The descriptive physics of ocean boundary layer flow and sedimentdynamics are used to detail the similarities and differences between the processes of scour hole formation in marine and river environments...

... boundary layer relative roughness variation cylinder rough cylinder displacement ratio smooth cylinder sarpkaya circular cylinder coefficient diameter roughness reynolds number equation oscillatory flow upstream oil & gas OTC 3760 AREVIEW OF DRAG AND INERTIA FORCES ON CIRCULAR...

... speed over a suitable period of time and the fluctuating speed described by standard deviation. variation frequency offshore structure engineering spectrum spectra upstream oil & gas fluctuation wind tunnel boundary layer wind loading turbulence roughness characteristic dynamic...

... of the helideck to a new location. The study included moderate and strong wind cases and the influence of approach wind direction. subsea system flow characteristic shear layer turbulence wave wind upstream oil & gas air gap platform helideck boundary layer wind direction original helideck...

... the suspended load is carried in the current direction, the direction of the transport of bed load deviates from the current direction due to gravity effect on the bed load moving on the slopes of the dredged trench. trench preben mortensen sediment boundary layer sedimentation gravity effect...