1-20 of 1947
Keywords: frequency
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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-22-433
... of rotational speeds, the main frequency of pressure pulsation coefficient is blade frequency, the pressure pulsation at the downstream blade is much stronger. Blade tip develops a maximum deformation and maximum equivalent stress is located near the blade root. Prestress has little influence on the modal...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-437
... of the wave resonance on motions and sectional loads is also investigated. Several conclusions are summarized, which may provide useful guidance for the further design of the tourism platform. platform tourism platform wave elevation frequency radiation potential wave direction free surface...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-455
... circular piston characteristic excitation plane wave transmission loss frequency fourier transform angular spectrum method inverse fourier transform coordinate system Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5 10, 2022...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-259
... been demonstrated for uniform straight (flexible) risers in uniform flow using displacement data. This work extends the framework and applies it to the straight riser problem using only limited strain measurements. The predicted amplitude and frequency responses are compared with experimental results...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-263
... spectrum of nonlinear waves and linear wave elevation responses obtained from frequency domain. The nonlinear air gap of a semi-submersible unit, including the effect of nonlinear wave elevations and nonlinear wave excitation forces, is investigated in time domain. Comparisons between the linear...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-275
... the relationship between the characteristic parameters of wind and wave currents and the comfort of the trestle construction environment to evaluate the comfort of the trestle construction environment. construction environment water depth water level frequency trestle structure dynamic response...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-278
... research frequency Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5 10, 2022 Copyright © 2022 by the International Society of Offshore and Polar Engineers (ISOPE) ISBN 978-1-880653-81-4; ISSN 1098-6189 www.isope.org Observation...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-286
...; Rosano, Begovic, Boccadamo and Rinauro, 2020). upstream oil & gas cfd method simulation ship motion lateral acceleration coefficient test value wave condition marine transportation excessive acceleration roll motion amplitude rankine panel method frequency different numerical...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-288
... conducted a numerical simulation of three-dimensional extreme waves encountered by a large container ship. Wang et al. (2019) presented a multi-directional irregular wave implementation in the open-source CFD model REEF3D. The non-directional frequency spectra Joint North Sea Wave Observation Project...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-588
... background noise. In this paper, a method based on Wavelet Threshold Denoising and Variational Mode Decomposition (WTD-VMD) is proposed to extract these features efficiently and accurately. For the original signal with low frequency and weak feature, Wavelet Threshold Denoising is used to remove the medium...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-590
... were all considered. The frequency dependent mechanical parameters were identified from experimental curves. Then, the equivalent FEM model of the vibration isolating system was built layer-by-layer. Results suggested that the impedance of each layer could be simulated with high accuracy. On this basis...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-533
... to calculate the hydrodynamic interactions of two ships under different conditions such as speed, transverse distance, longitudinal distance, wave height and frequency, and the effects of the above factors on the hydrodynamic interactions of two ships were analyzed. With the rapid development of the shipping...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-557
... in irregular waves. (e.g. Yasukawa et al, 2015; Seo et al. 2018). reservoir simulation maneuvering shaft speed consideration irregular wave propeller curve light propeller curve ship ship maneuvering frequency rudder coefficient propulsion power ocean engineering numerical simulation...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-558
... north america government marine transportation artificial intelligence shaft generator propulsion system engine battery controller frequency fuel injection torque shaft system shaft speed united states government electrical industrial apparatus diesel engine propeller simulation...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-394
...-frequency vibrations may occur in both the in-line and cross-flow directions (Vandiver et al., 1996; Chaplin et al., 2005; Lucor et al., 2006; Bourguet et al., 2013b). As reported in Bourguet et al. (2013b), the profile of the normal component of oncoming flow is identified to control the mono- or multi...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-400
... onset span length lf14-4 dpp weld root span length assessment operation condition frequency upstream oil & gas fatigue damage residual lay tension dnvgl-rp-f105 maximum lay tension midstream oil & gas lay tension sand wave weld cap viv onset span length Proceedings...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-421
... frequency spatial derivative experimental result boussinesq model experimental data two-layer boussinesq-type model high accuracy Proceedings of the Thirty-second (2022) International Ocean and Polar Engineering Conference Shanghai, China, June 5 10, 2022 Copyright © 2022 by the International...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-423
... propagation equation steepness depth change frequency wave propagation reflection coefficient gravity wave wave profile wave amplitude skewness wave frequency kurtosis surface elevation efficiency conformal mapping method engineering ABSTRACT In this paper, propagation...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-012
... production control amplitude doussis free end internal flow velocity production monitoring flow velocity condition eq metrikine argand diagram pipe cantilevered pipe critical velocity boundary condition eq natural frequency vibration reservoir surveillance frequency instability...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-020
... flexible pipes is investigated. Based on various attenuation models, the ECAH model, UA model, HT model and BLBL model are compared, and the ultrasonic attenuation mechanisms at different frequencies, particle sizes and concentrations are analyzed. The multilayer model was established by COMSOL...

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