Zobrazeno 1 - 10
of 116
pro vyhledávání: '"Carl M. Larsen"'
Publikováno v:
Journal of Applied Mathematics, Vol 2012 (2012)
Externí odkaz:
https://doaj.org/article/6ca412f6136a4a5cab65ca61d5840ea4
Publikováno v:
Marine Structures
Semi-empirical models are commonly used to predict vortex-induced vibrations (VIV). Empirical parameters are often based on forced harmonic motion tests of short rigid cylinders in one degree of freedom, which is a significant simplification of the t
Autor:
Carl M. Larsen, Hidetaka Senga
Publikováno v:
Journal of Fluids and Structures. 68:279-294
The hydrodynamic coefficients for straked cylinders were obtained from a set of forced motion experiments with a constant towing speed. Based on results from previous studies, two helical strake configurations were tested. The amplitude and frequency
Flexible risers might be subjected to large pressure and density fluctuations when transporting multiphase mixtures as different flow patterns may take place. Those fluctuations might induce large forces on the structure, which in turn may modify the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6fee984a22740757fd2337caff14615
http://hdl.handle.net/11250/2631088
http://hdl.handle.net/11250/2631088
Vortex-induced vibration of a flexible cylinder: Interaction of the in-line and cross-flow responses
Publikováno v:
Journal of Fluids and Structures. 63:238-258
It has been known that in-line (IL) response will influence cross-flow (CF) vortex shedding forces and vice versa. However, empirical codes for prediction of vortex induced vibrations (VIV) of slender marine structures have so far been limited to han
Publikováno v:
Ocean Engineering. 109:389-400
A large-scale model test of a truncated steel catenary riser (SCR) was performed in an ocean basin to investigate the riser responses under top vessel motion. Top end of the model was forced to oscillate at given motion trajectories, corresponded wit
Publikováno v:
141:011705
Journal of Offshore Mechanics and Arctic Engineering
Journal of Offshore Mechanics and Arctic Engineering
Vortex-induced vibrations (VIV) can lead to fast accumulation of fatigue damage and increased drag loads for slender marine structures. VIV responses mainly occur at the vortex shedding frequency, while higher harmonics can also be excited. Recent VI
A semi-empirical prediction tool for time domain analysis of cross-flow and in-line vortex-induced vibrations (VIV) is proposed. The model combines concepts from previous publications in a new way, which allows for time domain simulation of VIV toget
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3abaf19525aef8f204d7813c83add6b
http://hdl.handle.net/11250/2590788
http://hdl.handle.net/11250/2590788
Publikováno v:
Journal of Offshore Mechanics and Arctic Engineering. 140
Slender marine structures are subjected to ocean currents, which can cause vortex-induced vibrations (VIV). Accumulated damage due to VIV can shorten the fatigue life of marine structures, so it needs to be considered in the design and operation phas
Publikováno v:
Marine Structures. 41:200-222
A semi-empirical method for time domain simulation of vortex-induced vibrations (VIV) is used to calculate the in-line and cross-flow fatigue damage of a tensioned riser in uniform and sheared flow. Simulations are run for flow velocities ranging fro