... reasonably accurate estimates of the fatigue damage rate over the entire riser length. condition monitoring fatigue offshore installations sensor placement structural engineering vibrations vortices 02 01 2011 13 09 2011 02 02 2012 02 02 2012 2012 American Society...

...-phase flow vortices 10 11 2010 29 06 2011 01 02 2012 01 02 2012 2012 American Society of Mechanical Engineers ...

... in Fig. 9 . No regular vortices are shed from the cylinder for G / D  <  G / D c . For G / D  >  G / D c , vortex shedding appears and C Lrms increases rapidly. The present simulations under-predict C Lrms as compared with the experimental data by Jensen et al. [( 3 )] and Lei et al...

... and 2S 10 08 2009 15 11 2010 02 12 2011 02 12 2011 elastic hysteresis Navier-Stokes equations shapes (structures) shock absorbers structural engineering turbulence vibration control vortices wakes The present work investigates the hysteresis effect...

... in model tests with the real damping due to the risers in VIM. 01 04 2010 06 12 2010 13 10 2011 13 10 2011 damping design engineering offshore installations vortices water waves vortext-induced motion (VIM) monocolumn platform spar platform model test...

... blades shapes (structures) tidal power stations turbines vortices tidal/ocean current turbines vortex-lattice method (VLM) lifting line theory optimum loading on turbines blade design nonuniform currents effective wake There is a growing interest in renewable energy due...

... installations petroleum industry vortices vortex-induced motion (VIM) monocolumn platform model test two degrees-of-freedom (2DOF) This paper was presented at the 28th International Conference on Ocean, Offshore and Arctic Engineering, Honolulu, HI, May 31–June 5, Paper No. OMAE2009-79378...

...J. Baltazar; J. A. C. Falcão de Campos A low order potential based panel code is used to analyze the flow around the blades of a horizontal axis marine current turbine. An empirical vortex model is assumed for the turbine wake, which includes the variation of pitch of the helicoidal vortices...

...) elasticity flow instability flow measurement pipe flow shapes (structures) springs (mechanical) surface roughness vibrations vortices Marine risers are essential for the offshore petroleum industry. Risers are used for the drilling of subsea wells, for well intervention, and also for the flow...

... 2011 damping shapes (structures) vibrations vortices The ability to predict vortex induced vibration (VIV), at least within engineering accuracy, is very important for many engineering structures. This is more so for deep water risers and flow lines, where uncertainty driven designs...

... International Conference on Offshore Mechanics and Arctic Engineering , Paper No. OMAE2003-37151. 22 09 2009 03 02 2010 24 09 2010 24 09 2010 force structural engineering vortices vortex-induced motion (VIM) monocolumn platform model tests This paper includes...

... flow Navier-Stokes equations turbines vortices tidal power tidal-current discrete-vortex method unsteady flow viscous effect numerical simulation kinematic and dynamic validation towing tank test 2 This paper describes our use of a discrete-vortex method with free-wake...

... 17 03 2010 cables (mechanical) Navier-Stokes equations shear turbulence vibrations vortices The recent high oil prices and the prevailing unstable situation in the Middle East gives the offshore industry in the U.S. a more important and challenging status. Since the U.S. domestic...

... beam motion equation with external force obtained by integrating viscous and pressure loads on the riser surface. Then the critical parameters including riser VIV amplitude (a) to the riser outer diameter (D) ratio (a/D), vorticity contours, and motion trajectories were processed. The same parameters...

... widths is perhaps larger and stronger. A possible explanation for this is that, as the roll amplitude increases for a given frequency, the difference in velocity between the body and the fluid increases. Equation 16 states that, as this velocity difference increases, the vortices shed on each panel...

... of the LTFSW Channel and the end-plates of the model. channel flow fluid oscillations turbulence vibrations vortices Vortex induced vibration of bluff bodies typically cause damage to aero-, civil, mechanical, marine, offshore, and nuclear engineering structures. Ever since Leonardo da Vinci...

... segments associated with observed lock-in response. 27 06 2007 07 09 2008 26 02 2009 oil drilling statistical analysis vibrations vortices This study, divided into three parts, is concerned with the analysis of riser acceleration data and accompanying current velocity data...

... 12 2008 damping direct energy conversion power transmission (mechanical) renewable energy sources springs (mechanical) supports turbulence vibrations vortices Generation of energy by a VIVACE converter is based on extracting kinetic energy from a fluid flow by exciting a rigid...

... with detuning parameter (Period 2 solution; backward sweep; C D = 0.1 , C L = 0.6 ) 15 01 2007 05 04 2008 15 10 2008 drag flow instability fluid oscillations hydrodynamics ropes vibrations vortices In the past, especially in the past decade or so...

... vortices Ocean energy in the form of waves, currents, tides, and thermal and salinity gradients can provide an abundant supply of clean and renewable energy ( 1 ). Several studies attest to the abundance of ocean energy in general ( 2 ) and more specifically to ocean current energy ( 1...