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1-20 of 2014
Keywords: frequency
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Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-454
..., and viscosifying polymer is a concern in studies of performance of polymer flooding. upstream oil & gas subsurface corrosion pipeline corrosion geologist geology enhanced recovery well integrity mineral resistance riser corrosion materials and corrosion flowline corrosion frequency transfer...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-456
...., 2015). The research of sound transmission about periodically supported beams is done by (Mead and Pujara, 1971) using space harmonic expansions. virtual work frequency stl curve incident field cavity field frequency range resonance frequency upstream oil & gas insulation performance...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-461
..., its excitation force will cause the vibration of the equipment base at a fixed frequency, which will be transmitted to the raft frame through the vibration isolator installed on the equipment base, and the raft frame will be transmitted to the base installed on the boat body through the vibration...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-462
... vibration equation of rectangular plate considering point support is established, and the free vibration frequency and mode of rectangular plate are solved. The effectiveness and reliability of the proposed method are verified by comparing the calculated results with literature and finite results. Finally...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-468
... element method equation element model flexible body passenger transportation excitation element method coefficient deformation impact noise ship cabin hammer numerical prediction model virtual modal method iso frequency Proceedings of the Thirty-third (2023) International Ocean and Polar...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-479
...) equation is used for the sound field prediction. Among them, the nonlinear component is predicted by the direct volume integral method, and the dual mesh method is combined to reduce the calculation amount. The results show that the propeller nonlinear noise affects both high and low frequency ranges...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-485
... the resulting deformations. The computations consider the propeller at moderate loading and rudder deflection angles at neutral and ±4° The structural response of the rudder is dominated by lateral and torsional deformations, while the edgewise deformations are negligible. The lower frequencies of vibration...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-554
... that WIG effect thruster has a wider range of applicable conditions than propeller. After medium-high speed ships, WIG does not have an advantage in efficiency, but it can bring smaller thrust deduction fraction and lower working frequency. INTRODUCTION Wing-In-Ground (WIG) effect thruster is a new...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-556
..., amplitude, frequency of single foil on hydrodynamic performance. Comparison of the propulsive performance between single foil and dual-foil shows that the latter produces higher thrust values. By matching thrust of dual-foil and resistance of model-scale SUBOFF submarine, the simulations of dual-foil behind...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-564
... and several low-frequency band gaps are obtained. Different effective models are exploited to describe the characteristics of the metamaterial lattice, and effective parameters of the effective models are obtained, which are the effective mass density, effective stiffness, and effective modulus. Furthermore...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-580
... system imu position correlation cog position risk management estimation linear acceleration angular velocity lateral distance maximum lateral distance equation frequency longitudinal position australia government heave gravity iheave vessel response Proceedings of the Thirty-third...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-589
..., it would be possible to remove adherent organisms before they become attached to the ship's bottom and always maintain a smooth ship bottom. shock wave nozzle outlet flow field frequency water management orifice bubble motion mpa marine transportation high-luminance area orifice plate...
Proceedings Papers
Timothy Vervaet, Nicolas Quartier, Efrain Carpintero Moreno, Vasiliki Stratigaki, Peter Troch, Gael Verao Fernandez, Francesco Ferri
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-102
... by a Proportional (P) and Proportional Integral (PI) IM controller in the peak wave frequency of the design sea state, equivalent to a resistive and reactive controller, respectively. These causal IM controllers are implemented in a MATLAB-Simulink real-time control environment and experimentally tested...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-106
... as a reliable source of clean energy (Sheng, 2019). sustainability sustainable development wave condition frequency asia government ocean energy wec-rotor irregular wave condition efficiency pitch response stiffness europe government mechanism negative stiffness mechanism extraction social...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-110
... to the anchors. This design was also expected to reduce snap loading throughout the mooring system. sub-sea system unidirectional condition configuration directional spreading cable ocean energy frequency hinge angle stern float mooring system directional sea state buoy peak load wave...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-115
... to the complex marine environment, noise disturbance, non-stationary and nonlinear response. In this study, operational modal analysis (OMA) of the monopile OWT was conducted based on the in-situ monitoring data at an offshore wind farm. Various time and frequency domain signal processing methods combined...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-117
... ABSTRACT This study compares the results of an analytical and a numerical model simulating the coupled motion of crane vessel and crane load in regular waves. The analytical model is a frequency domain model, which uses hydrodynamic input data from a Boundary Element Method solver (i.e., Ansys...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-121
... and shipwreck to reduce sling tension and payload motion fluctuations. However, the resonance of payload displacement and sling tension may also occur in low wave frequencies due to the lack of system damping. Therefore, a proportional valve is added to the compensation system for flow rate regulation...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-125
... the motions. Typical draft conditions of a caisson during installation process are considered. The present methodology is verified through the free decay and the VIM of a cylinder simulations in two-dimension. Free decay simulations show that the natural frequency decrease with the increasing draft...
Proceedings Papers
Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-126
... dynamic response of the main girder are dominated by different structural vibration modes. It is recommended to adopt multi-frequency vibration reduction device to control. INTRODUCTION Compared to bridges built inland, bridges built across the sea are exposed to harsher environments, such as typhoons...
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