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Keywords: wind
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Journal Articles
Publisher: ASME
Article Type: Ocean Engineering
J. Offshore Mech. Arct. Eng. November 2011, 133(4): 041103.
Published Online: April 12, 2011
... state (ULS)) or fatigue limit (fatigue limit state) is exhausted. The focus in this paper is on the determination of extreme responses for ULS design checks, considering coupled wave and wind induced motion and structural response in harsh condition up to 14.4 m significant wave height and 49 m/s 10 min...
Journal Articles
Publisher: ASME
Article Type: Structures, Safety and Reliability
J. Offshore Mech. Arct. Eng. November 2010, 132(4): 041604.
Published Online: September 23, 2010
... likelihood estimation of ξ and σ ̃ u is used here ( 9 ). For our POT analyses, we therefore extract the largest peak value from each 3–4 days cluster of peak wind speed values. As already mentioned, an underlying assumption for the applicability of the POT method...
Journal Articles
Publisher: ASME
Article Type: Safety And Reliability
J. Offshore Mech. Arct. Eng. November 2009, 131(4): 041601.
Published Online: September 8, 2009
...P. Agarwal; L. Manuel In the design of wind turbines—onshore or offshore—the prediction of extreme loads associated with a target return period requires statistical extrapolation from available loads data. The data required for such extrapolation are obtained by stochastic time-domain simulation...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Offshore Mech. Arct. Eng. August 2009, 131(3): 034501.
Published Online: June 3, 2009
...Dag Myrhaug; Muk Chen Ong This paper considers the effect of wave age on wind gust spectra over wind waves. Here, two wind gust spectra based on maritime data are used to serve the purpose of demonstrating the effect of wave age; the spectra according to Wills et al. (1986 “Offshore Mean Wind...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Offshore Mech. Arct. Eng. August 2008, 130(3): 031008.
Published Online: July 16, 2008
...P. Roux de Reilhac; F. Bonnefoy; P. Ferrant In the present work, we study the capabilities of a one-side segmented wavemaker to generate multidirectional sea states. We want to reproduce typical West Africa sea conditions in a rectangular basin, that is, two spectra representing swell and wind...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Offshore Mech. Arct. Eng. November 2006, 128(4): 265–270.
Published Online: December 18, 2004
... partitioning bimodal wave spectra into wind-sea and swell components and then fitting a spectral function to each component, while the third assigns an average spectral shape based on the integrated spectral parameters. The partitioning methods involve separating the wave spectrum into two frequency bands...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Offshore Mech. Arct. Eng. August 2004, 126(3): 202–212.
Published Online: September 20, 2004
...Se´bastien Fouques; Dag Myrhaug; Finn Gunnar Nielsen Statistical information about the joint occurrence of metocean parameters is of importance for many offshore activities. For instance, in marine operations, environmental limitations may be brought about by both wind and wave conditions. Thus...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Offshore Mech. Arct. Eng. February 2004, 126(1): 105–112.
Published Online: March 2, 2004
.... Furthermore, comparisons of the empirical data with some probabilistic models often used in practice shows that none of these models is able to characterize adequately all the cases of combined sea-states examined. In fact, they might be used only in the case of wind-sea dominated sea-states with small...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Offshore Mech. Arct. Eng. February 2004, 126(1): 96–104.
Published Online: March 2, 2004
... system was examined. Only vortex-induced vibrations (VIV) of a moored spar were considered for this study, although it is believed that similar active-control systems can contend equally well with low-frequency wave-drift and wind-induced motions. VIV has been selected for this demonstration due...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Offshore Mech. Arct. Eng. August 2003, 125(3): 219–220.
Published Online: July 11, 2003
... 07 2003 wind ocean waves mechanical engineering Myrhaug and Slaattelid 1 (hereafter referred to as MS) considered the effects of sea roughness and atmospheric stability on the sea surface wind stress over waves, which are in local equilibrium with the wind, by using...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Offshore Mech. Arct. Eng. August 2003, 125(3): 198–204.
Published Online: July 11, 2003
... 01 June 2002 11 07 2003 mechanical engineering statistical analysis wind ocean waves height measurement Most work on developing probabilistic models of short-term sea state characteristics has concentrated on wind waves in single wave systems, which are appropriately...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Offshore Mech. Arct. Eng. May 2003, 125(2): 87–93.
Published Online: April 16, 2003
...P. Teigen; A. Naess The paper highlights the problem of evaluating the extreme surge response of a floating, deep water structure subjected to stochastic loading from concurrent wind and waves. Additional load effects associated with ocean currents are also briefly discussed. Both long-crested...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Offshore Mech. Arct. Eng. November 2002, 124(4): 219–225.
Published Online: October 22, 2002
... of motion in surge, sway, and yaw of the DP vessel can be formulated as: (1) Mv ˙ + C RB v v + C A v r v r + D NL v r , γ r v r + D L v r = τ wind + τ wave 2 + τ thr where v is the velocity...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Offshore Mech. Arct. Eng. August 2002, 124(3): 169–172.
Published Online: August 1, 2002
...Dag Myrhaug; Olav H. Slaattelid The paper considers the effects of sea roughness and atmospheric stability on the sea surface wind stress over waves, which are in local equilibrium with the wind, by using the logarithmic boundary layer profile including a stability function, as well as adopting...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Offshore Mech. Arct. Eng. February 2002, 124(1): 14–21.
Published Online: August 4, 2001
... Oil Company PETROBRAS in Campos Basin to study the main oceanographic features of the region. In terms of wind and wave measurements, a heave-pitch-roll buoy was moored in a depth over 1000 m at position 22 ° 31 ′   S and 39 ° 58 ′   W from March 1991 to March 1993...
Journal Articles
Publisher: ASME
Article Type: Technical Papers
J. Offshore Mech. Arct. Eng. November 2001, 123(4): 170–176.
Published Online: July 2, 2001
...Bertrand Bobillier; Subrata Chakrabarti; Poul Christiansen Wind is an important environmental parameter that influences the design of floating offshore structures, particularly in harsh environment. Because wind spectrum is broad-banded, computation of wind load on the floating structure...