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Keywords: frequency
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Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 27–29, 2021
Paper Number: SNAME-SMC-2021-021
... and finite element (FE) analyses are performed to obtain the structural response for various wave conditions. A set of specific wave headings and frequencies is selected to construct base wave modes, and the structural response can be reconstructed under arbitrary wave loads. Case studies using...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 27–29, 2021
Paper Number: SNAME-SMC-2021-053
... (Johannessen, MSc thesis, 2020). marine transportation anti-singing edge johannessen naca 0009 upstream oil & gas simulation vortice propeller vibration bevel angle frequency hydrofoil inflow velocity vortex shedding passenger transportation strouhal number numerical study hydrofoil...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 27–29, 2021
Paper Number: SNAME-SMC-2021-077
... floating production system smc2021 turbine basu roger floating production storage and offloading upstream oil & gas farm requirement deeper water mexico frequency offshore structure jacket structure gulf SNAME Maritime Convention 2021 27-29 October, Providence RI Copyright © 2021...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 27–29, 2021
Paper Number: SNAME-SMC-2021-091
... on DNVGL recommended practice, DNVGL-RP-F105. It provides a brief introduction to a software application used to calculate parameters addressing how free-spanning pipelines are affected considering stresses, damage and fatigue life. offshore pipeline frequency sea state software piping simulation...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, September 29–October 2, 2020
Paper Number: SNAME-SMC-2020-080
... To determine the risk involved in operations around offshore structures, static and dynamic traffic models can be used to assess the individual probabilities of incidents. This paper describes the underlying models to determine ramming (powered) as well as drifting collision frequencies...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, September 29–October 2, 2020
Paper Number: SNAME-SMC-2020-039
... results reinforcing this approaches capabilities. frequency prediction reservoir simulation calculation ile marine transportation virtual event refinement rotation propeller setup interaction kimmerl smc2020 tip vortex turbulence upstream oil & gas radiated noise experiment...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 30–November 1, 2019
Paper Number: SNAME-SMC-2019-064
... maintained a constant forward speed of u = 2 m/s, and oscillated in the lateral di- rection according to v (t) = v0 cos ( t) = u tan 0 cos ( 4pikUt ` ) (2) The variable k = f`/2U is the reduced frequency of the motion, and is used here as the non-dimensional parameter which describes the degree of unsteadi...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 30–November 1, 2019
Paper Number: SNAME-SMC-2019-074
... farm concept, a series of 1:120 model scale experiments were conducted at the University of Southampton Towing Tank (dimensions L=138m, W=6m, D=3.5m) in regular waves, over a range of frequencies (0.6Hz to 1.0Hz in 0.1Hz increments) and wave heights (0.04m to 0.08m). The 1:120 model spar (height 0.8m...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 30–November 1, 2019
Paper Number: SNAME-SMC-2019-003
... motions using two different methods. The first method uses time stepping of forces acting on the ship to determine resulting motions. The second method uses motion response amplitude operators (RAOs) computed in the frequency domain to determine wave-induced motions when the ship is travelling...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 30–November 1, 2019
Paper Number: SNAME-SMC-2019-016
... at the center of mass. Some discussion addressing the practical nature of asymmetry in seakeeping computations is provided, attempting to relate the theoretical and numerical findings back to the practical application. marlante asymmetric condition heel angle head sea frequency ship motion matrix...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 30–November 1, 2019
Paper Number: SNAME-SMC-2019-078
... of the moonpool wave motions and therefore the overall vessel resistance. It was also determined that 3D effects were necessary to adequately capture moonpool hydrodynamics. froude number moonpool natural frequency three-dimensional simulation simulation oscillation recess series 60 molin elevation...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 24–27, 2018
Paper Number: SNAME-SMC-2018-053
... wind-generated waves. Nondimensionalized first-order power models relating frequency and fetch were developed through laboratory studies in the University of Michigan's Wind-Wave Tank. Dimensional first-order power correlations between frequency, significant wave height, fetch, and wind speed...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 24–27, 2018
Paper Number: SNAME-SMC-2018-031
... of this work was to explore the effects of proximity to the free surface and the influence of waves on the dynamic hydro elastic response of a surface-piercing strut. The results showed that the natural frequencies decreased with increasing submergence, and the relative change was mode dependent. In addition...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 24–28, 2017
Paper Number: SNAME-SMC-2017-060
... technique, quantitative risk calculations including both the frequency and consequence associated with property damage and oil spills, the hull girder collapse risk in tow operations during salvage, and the exceedance frequency associated with risk acceptance criteria. The procedure is applied to a VLCC...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 24–28, 2017
Paper Number: SNAME-SMC-2017-068
..., is the wave number, is the longitudinal position of the section node, is the wave encounter frequency, and is time. = + cos + (22) One will notice that as is still dependent upon we have seemingly only complicated the problem. However, if we invoke a small time-step assumption, it is possible...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 24–28, 2017
Paper Number: SNAME-SMC-2017-077
... speed Green function in the frequency domain to provide hydrodynamic forces in both the frequency and time domains. Numerical predictions highlight the sensitivity of forces and motions to encounter frequency and the slow decay of retardation functions when two ships are in close proximity...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 24–28, 2017
Paper Number: SNAME-SMC-2017-087
... offshore plant for oil and gas production is excited by various types of dynamic environmental loads. The stress response from dynamic environmental loads are usually described by spectrum in frequency domain. At the initial design stage of the offshore plant, relevant fatigue damage models are useful...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, October 24–28, 2017
Paper Number: SNAME-SMC-2017-103
... design space candidate 2 strut swath vessel spectrum surrogate model geometry artificial intelligence irregular wave upstream oil & gas fidelity prediction strip theory frequency optimization problem algorithm bayesian optimization displacement Multi-Fidelity Bayesian Optimization...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, November 1–5, 2016
Paper Number: SNAME-SMC-2016-107
... Sound travels 4.5 times faster in water than in air and low frequency sounds (<100 Hz) can travel vast distances (>1000 km) with very little attenuation (NRC 2003). This transmission efficiency is likely why most marine animals, including whales and dolphins, are adapted to use sound...
Proceedings Papers

Paper presented at the SNAME Maritime Convention, November 1–5, 2016
Paper Number: SNAME-SMC-2016-089
... valve cylinder upstream oil & gas frequency range marine transportation software mechanical benefit maintenance pt curve vibration artificial intelligence engine failure derivative curve inspection vibration data frequency peak firing pressure signature SMC-089-2016.R2 Economic...

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