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Proceedings Papers

Paper presented at the SNAME 29th Offshore Symposium, February 20, 2024
Paper Number: SNAME-TOS-2024-014
... are based in fundamental physics and mathematics. A parametric study is carried out to understand the sensitivity of the response to the design characteristics. Also included is discussion of the implications for use as a vibration absorber in the frequency domain. The double pendulum model is further...
Proceedings Papers

Paper presented at the SNAME 28th Offshore Symposium, March 8, 2023
Paper Number: SNAME-TOS-2023-009
... wave gauges instead of traditional practice of three wave gauges which is unable to resolve higher wave harmonics. The results of this paper test the new technique by estimating the error bands for digitizing frequencies, noisy signals, and different wavelengths for a specific set of wave gauge spacing...
Proceedings Papers

Paper presented at the SNAME 27th Offshore Symposium, February 22, 2022
Paper Number: SNAME-TOS-2022-020
... and inertia, and centrifugal and Coriolis forces are included in the analysis. Rainflow counting method is used to calculate fatigue damage, which is similar to that used for wave loading fatigue analysis. Slug flow conditions are described in terms of lengths of slugs, slug velocity, slug frequency...
Proceedings Papers

Paper presented at the SNAME 27th Offshore Symposium, February 22, 2022
Paper Number: SNAME-TOS-2022-011
.... Additionally, the model can assist in design iteration. As the hull shape gradually changes, the new RAOs can be estimated to ensure that the design is progressing in an appropriate direction. artificial intelligence frequency th offshore symposium naval architect machine learning marine...
Proceedings Papers

Paper presented at the SNAME 27th Offshore Symposium, February 22, 2022
Paper Number: SNAME-TOS-2022-010
... of changing the wave characteristics, such as amplitude, frequency, and speed, on the power-generating ability of the spheroid buoy system. Three-dimensional Unsteady Reynolds-Averaged Navier-Stokes (URANS) simulations of the selected buoy were performed in OpenFOAM with the integration of a dynamic mesh...
Proceedings Papers

Paper presented at the SNAME 23rd Offshore Symposium, February 14, 2018
Paper Number: SNAME-TOS-2018-024
... are summarized in Table 1 and Table 2. The Y-Wind platform is assumed to be installed in the US offshore at a water depth of 200 m and designed to produce a power of 5MW for a service life of 25 years. Details of the Y-Wind can be found in Boo et al. (2017a, 2017 b). The natural frequencies of 6 DOF motions were...
Proceedings Papers

Paper presented at the SNAME 22nd Offshore Symposium, February 2, 2017
Paper Number: SNAME-TOS-2017-018
... is based on the assumption of a perfect fluid. This approach is known to overpredict the wave elevations close to the moonpool resonance frequencies, as it neglects viscous effects that in reality play a major role in limiting the wave kinematics. Thus, applying potential theory, without special treatment...
Proceedings Papers

Paper presented at the SNAME 21st Offshore Symposium, February 16, 2016
Paper Number: SNAME-TOS-2016-012
... Multiphase flow-induced dynamic loads in rigid tie-in spool are mainly generated by fluid density variation, slugging, and direction change at bends. When the frequencies of the induced dynamic loads are close to the natural frequencies of the rigid tie-in spool, resonance will occur. This may...
Proceedings Papers

Paper presented at the SNAME 21st Offshore Symposium, February 16, 2016
Paper Number: SNAME-TOS-2016-014
... angle from mean, low frequency and wave frequency for each component are extracted. Numerical results are presented to illustrate the significance of each of the motion components to the Flexible Joint rotation angle. The paper concludes with recommendations on the key design considerations...
Proceedings Papers

Paper presented at the SNAME 21st Offshore Symposium, February 16, 2016
Paper Number: SNAME-TOS-2016-024
... artificial intelligence statistics platform design wind energy 100-yrp condition steady wind case naval architect renewable energy tendon spectra subsea system frequency st offshore symposium turbulence houston WIND TURBULENCE EFFECTS IN GLOBAL RESPONSES OF A 5 MW WIND TURBINE THREE-COLUMN...
Proceedings Papers

Paper presented at the SNAME 21st Offshore Symposium, February 16, 2016
Paper Number: SNAME-TOS-2016-040
... requiring the generation of a-priori ambient flow time histories. Ambient turbulence intensity and mean flow speed are user input parameters and Kolmogorov's five-thirds law is utilized to obtain the frequency spectra upon which the algorithm is based. st offshore symposium velocity component us...
Proceedings Papers

Paper presented at the SNAME 20th Offshore Symposium, February 17, 2015
Paper Number: SNAME-TOS-2015-017
... (WAMIT Inc., 2006), OrcaFlex (Orcina Ltd FAST (Jonkman and Buhl, 2005) and BMODES (Bir, 2007). WAMIT and OrcaFlex are widely used in the offshore industry for frequency domain and time domain modeling of floating structures, respectively. FAST is a commercially available program for the modeling...
Proceedings Papers

Paper presented at the SNAME 20th Offshore Symposium, February 17, 2015
Paper Number: SNAME-TOS-2015-026
...). The electrical aspects of the design of these consumers are likely to be derived from existing standards (IEEE 519-2014), ( IEC 60034 Series), (IEC 61800 Series), etc., that constrain electrical supply power quality, i.e. acceptable time dependent variations of frequency and voltage as well as harmonic content...
Proceedings Papers

Paper presented at the SNAME 19th Offshore Symposium, February 6, 2014
Paper Number: SNAME-TOS-2014-013
.../s range for a typical ocean environment it is evident that the product of frequency, f, and structure diameter is also constant; that is large structures have low frequency vortex shedding and small structures have higher frequencies. The position or time when the vortices are released depends...
Proceedings Papers

Paper presented at the SNAME 19th Offshore Symposium, February 6, 2014
Paper Number: SNAME-TOS-2014-025
... have also been examined. construction texas texas section installation artificial intelligence th offshore symposium platform diameter naval architect proceedings pipe riser pipe frequency diameter riser design concept riser stiffness houston Proceedings of the 19th Offshore...
Proceedings Papers

Paper presented at the SNAME 16th Offshore Symposium, February 9, 2010
Paper Number: SNAME-TOS-2010-003
.... tension-leg platform renewable energy platform design spiral upstream oil & gas water depth frequency proceedings th offshore symposium artificial intelligence mooring system wind turbine tltp optimization problem subsea system texas texas section offshore wind turbine naval architect...
Proceedings Papers

Paper presented at the SNAME 16th Offshore Symposium, February 9, 2010
Paper Number: SNAME-TOS-2010-004
... incident wave amplitude impedance social responsibility wec platform loss factor sustainable development ocean energy texas texas section turbine renewable energy sustainability naval architect frequency wave energy converter houston th offshore symposium Proceedings of the 16th...
Proceedings Papers

Paper presented at the SNAME 16th Offshore Symposium, February 9, 2010
Paper Number: SNAME-TOS-2010-005
... frequency subsea system body 1 body 12 texas texas section green water concept green water proceedings reservoir pitch motion social responsibility relative wave motion naval architect water concept ocean energy sustainable development renewable energy houston Proceedings of the 16th...
Proceedings Papers

Paper presented at the SNAME 16th Offshore Symposium, February 9, 2010
Paper Number: SNAME-TOS-2010-007
... point of view. For dynamic stiffness the influencing parameters mean load, load range and frequency are distinguished and it is mentioned that according to previous research in a real wave situation the parameters load range and frequency can be ignored. A first example case discusses a renewable wave...
Proceedings Papers

Paper presented at the SNAME 16th Offshore Symposium, February 9, 2010
Paper Number: SNAME-TOS-2010-008
... process. To predict and possibly mitigate the resonance of the system, it is crucial to accurately estimate the natural frequency from the total added-mass of the system. The objective of this study is to determine the total added-mass coefficient of a suction pile through model tests. KEY WORDS: Added...

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