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Keywords: pendulum
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Proceedings Papers
Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-342
... as a mathematical pendulum, thereby organizing a single-degree-of-freedom (SDOF) system. floating production system payload excitation marine transportation fpso operation icebreaker platform design subsea system roll motion floating production storage and offloading floating production storage...
Proceedings Papers
Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1164
... ABSTRACT Offshore wind turbines located in sea ice zones are subjected to severe ice-induced vibration. The present study uses a three-dimensional pendulum tuned mass damper (3d-PTMD) to mitigate the nacelle/tower and foundation dynamic response under the combined action of wind and ice loading...
Proceedings Papers
Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-704
... condition friction residual curvature section perturbation installation residual curvature endal offshore pipeline upstream oil & gas pendulum lateral rotate curvature tdp pipeline rotation reference rotation instability straightness Prediction of Pipeline Rotation During...
Proceedings Papers
Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, June 21–26, 2015
Paper Number: ISOPE-I-15-269
... with a specific case. Each of the cases consists of a free decay pendulum in water. To gain experimental reference data, the cases are set up in a water basin and the motion over time is recorded by an optical measurement system. In a second step the validation cases are set up in a Fluid-Multibody FSI code...
Proceedings Papers
Paper presented at the The Twenty-fourth International Ocean and Polar Engineering Conference, June 15–20, 2014
Paper Number: ISOPE-I-14-011
... Abstract The floating pendulum type wave energy converter device, a type of rotating body wave energy converter, directs wave energy into the water chamber of the floating body, converting the energy thereof into the alternating motion of the pendulum to generate electricity. The pendulum-type...
Proceedings Papers
Paper presented at the The Twenty-third International Offshore and Polar Engineering Conference, June 30–July 5, 2013
Paper Number: ISOPE-I-13-196
... ABSTRACT In order to evaluate performance of a floating pendulum wave energy converter (FPWEC) proposed by Watabe, a test model with a power take-off system composed of pulleys, belts and a generator is made and tank tests are carried out in regular waves. Free oscillation tests...
Proceedings Papers
Paper presented at the The Twenty-second International Offshore and Polar Engineering Conference, June 17–22, 2012
Paper Number: ISOPE-I-12-040
... ABSTRACT In this paper, we carried out a numerical investigation of the hydrodynamic performance of a floating pendulum wave energy converter (WEC). This movable-body-type device consists of three main parts: floater, pendulum and damping plate. The performance of the WEC device was evaluated...
Proceedings Papers
Paper presented at the The Twenty-first International Offshore and Polar Engineering Conference, June 19–24, 2011
Paper Number: ISOPE-I-11-637
... ABSTRACT: Fixed type pendulum wave energy converter is a kind of movable body type wave energy converter and it was invented by Kondo and Watabe with Muroran Institute of Technology in Japan. Some researches on this device were carried out experimentally and theoretically, and its high energy...
Proceedings Papers
Paper presented at the The Twentieth International Offshore and Polar Engineering Conference, June 20–25, 2010
Paper Number: ISOPE-I-10-380
... for the FPSO-SYMS mating operation. The scope of the virtual simulation covers various installation stages including a series of positioning trials, station keeping and temporary mooring to the pre-installed SYMS mooring tower, pendulum mating, and yoke ballasting to storm-safe, etc. The virtual simulation...
Proceedings Papers
Paper presented at the The Eighteenth International Offshore and Polar Engineering Conference, July 6–11, 2008
Paper Number: ISOPE-I-08-045
... ABSTRACT A non-linear pendulum model is developed to represent the motion of a sloshing fluid in real time. The forces imposed by the sloshing fluid are identified using multiphase RANS CFD simulations and subsequently included in the pendulum sloshing model. The pendulum sloshing model...
Proceedings Papers
Paper presented at the The Seventeenth International Offshore and Polar Engineering Conference, July 1–6, 2007
Paper Number: ISOPE-I-07-010
.... A cosine power "2s" function applied to a Pierson-Moskowitz spectrum is chosen to model the directional spreading. The linearized equations of the device motion, including the motion of the internal pendulum wheel are presented. Numerical results are shown for the power recovered by the device in random...
Proceedings Papers
Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-020
... ABSTRACT A new technique for VIM reduction was tested at the Offshore Model Basin. It can be described as a passive dynamic method, where the VIM of relatively small and mobile structures (pendulums) affects the VIM of a larger floating structure. The new approach was verified for two...
Proceedings Papers
Paper presented at the The Sixteenth International Offshore and Polar Engineering Conference, May 28–June 2, 2006
Paper Number: ISOPE-I-06-036
.... The report presents the constructions of unique high-rise structures that are equipped with dampers in the form of a double inverted pendulum as well as the test results of a lattice tower under vibrations along and across direction of the wind flow in the presence of a damper and without it. INTRODUCTION...
Proceedings Papers
Paper presented at the The Twelfth International Offshore and Polar Engineering Conference, May 26–31, 2002
Paper Number: ISOPE-I-02-100
... ABSTRACT The Pendulum Wave Energy Converter is basically formed by a channel of parallel walls with a reflector wall on the back (caisson) and a pendulum a distance from the back wall being able to perform rotational motion around a horizontal axis, by the action of the waves. This oscillatory...
Proceedings Papers
Paper presented at the The Eleventh International Offshore and Polar Engineering Conference, June 17–22, 2001
Paper Number: ISOPE-I-01-089
.... A pendulum hangs down in a water chamber, which is placed in a caisson. From the opening mouth, incident waves come into the water chamber and alter the standing waves by superposing upon them with reflecting waves. The reciprocal flow of the standing waves at the nodal plane drives the pendulum, placing...
Proceedings Papers
Paper presented at the The Ninth International Offshore and Polar Engineering Conference, May 30–June 4, 1999
Paper Number: ISOPE-I-99-021
... efficiency was 60~80% that was 22–42% higher than the 1st stage. INTRODUCTION The authors invented a wave power converter New Pendulor. It consists of a pendulum and a large vane pump placed on the pendulum shat~ as a part of it as shown in Fig. 1. Incident waves become standing waves in the water chamber...
Proceedings Papers
Paper presented at the The Seventh International Offshore and Polar Engineering Conference, May 25–30, 1997
Paper Number: ISOPE-I-97-016
... of the water of incident waves comes into the backward chamber when the wave hei~dht becomes bigger than a critical evel, ® then the water in the chamber pushes the pendulum against he incident waves by using damping pressure. This damping system does not need any moving parts such as the variable propeller...
Proceedings Papers
Paper presented at the The Sixth International Offshore and Polar Engineering Conference, May 26–31, 1996
Paper Number: ISOPE-I-96-112
... offset due to current. rot motion cable vertical excursion vertical rot motion snapshot plot simulation configuration upstream pendulum model repositioning water depth rot system rigid pendulum model rot ship motion cable response ship subsea system grosenbaugh pendulum...
Proceedings Papers
Paper presented at the The Fourth International Offshore and Polar Engineering Conference, April 10–15, 1994
Paper Number: ISOPE-I-94-323
... of two coupled pendula of mass m and spring constant k The length of the nghthand pendulum is disordered by a fractiOnal amount 6 down of the perturbatiOn scheme of Pierre and Dowell (1987) as their expanSiOn would have a radius of convergence only up to the nearest branch P0111t 111 the complex plane...
Proceedings Papers
Paper presented at the The Fourth International Offshore and Polar Engineering Conference, April 10–15, 1994
Paper Number: ISOPE-I-94-050
... consisted of a pendulum and a cylinder pump as illustrated in Fig.1. As soon as the pendulum was placed in the water, the pendulum began moving whenever the waves were there. So, coupling work with the pump to the pendulum was very dangerous. It required a water gate to shut incoming waves out. Concerning...
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