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Keywords: oscillation
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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-23-226
... united states government stiffness horizontal coordinate non-linear kpa oscillation Proceedings of the Thirty-third (2023) International Ocean and Polar Engineering Conference Ottawa, Canada, June 19-23, 2023 Copyright © 2023 by the International Society of Offshore and Polar Engineers (ISOPE...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-272
..., this paper proposes a Piecewise fuzzy adaptive PID control method. This control method can control the underwater vehicle to reach the target speed smoothly and quickly, and the oscillation amplitude of the traction force is small during the traction process. INTRODUCTION Common linear drive methods...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-042
... in the referred model tests, which are reproduced by the present second-order time-domain model with reasonably good accuracy. The linear model is shown to significantly underestimate the motion responses close to the wave-focusing time and the large-amplitude transient LF oscillations when the focused waves have...
Proceedings Papers

Paper presented at the The 33rd International Ocean and Polar Engineering Conference, June 19–23, 2023
Paper Number: ISOPE-I-23-389
... oscillation amplitude fiv response bare cylinder flow velocity united states government vibration circular cylinder seyed-aghazadeh velocity range cylinder splitter plate flexible cylinder frequency flexible splitter plate modarre-sadeghi vortex-induced vibration flow-induced...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-293
... ABSTRACT The article provides information on various types of oscillations that arise during iceberg towing; both long-period and short-period oscillatory processes are considered; simple formulas for calculating the periods of oscillations are given. The results presented in the article...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-033
... of this paper is to investigate the contribution to the damping and added mass coefficients for different diameters of the heave plates by using forced oscillations of the FOWT. The effects of Keulegan-Carpenter ( KC ) number range from 0.18 to 1.11 and frequency of forced oscillation range from 0.40 Hz to 1.43...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3107
... fpso floating production storage and offloading subsea system floating production system numerical analysis floating production storage & offloading high frequency oscillation time history cfd in-house code green water model test data numerical error upstream oil & gas...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3268
... regime inside the BDS. Different solutions on the draining surface are considered, namely different arrangements of the holes within the water flows through. This work aims at investigating the influence on the drainage performances when an oscillating groundwater level (simulating the swash infiltration...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3226
... Abstract The effects of symmetric strips on the flow-induced oscillation (FIO) of a cylinder in a uniform flow are investigated numerically. A pair of symmetric smooth strips are attached parallelly to a cylinder at different angles a from the frontal stagnation point. One degree of freedom...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1285
...; Joughin et al., 2012). Numerous research has been devoted to the Oscillation (AAO) response by modulating the coupling between the interannual variability of the sea ice in Southern Ocean, but the stratosphere and troposphere. The AAO tends to play a bridge role in question whether the observed changes...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1290
... characteristic upstream oil & gas force behavior iceberg oscillation peak-to-peak swing calm sea condition sea condition Proceedings of the Thirty-first (2021) International Ocean and Polar Engineering Conference www.isope.org Rhodes, Greece, June 20 25, 2021 Copyright © 2021 by the International...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1289
... Abstract This paper discusses mathematical models of iceberg towing that considered iceberg shape characteristics in an explicit form. These models allowed to analyze oscillations appearing in towing system at begging of iceberg motion and during its mode change, when dynamic action is applied...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1267
... Interdecadal Changes of the Solar-Arctic Oscillation Relationship and Their Effects on the Arctic Climate Change during Boreal Winter Qun Zhou 1 , Wen Chen 2 1National Marine Environmental Forecasting Center, Ministry of Natural Resources. Beijing, Beijing, China 2Center for Monsoon System...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1183
... wind energy floating production system model test offshore projects planning and execution platform design frequency fpso renewable energy vim surge sway oscillation vortex-shedding frequency hydrodynamic response current load subsea system upstream oil & gas engineering...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1266
... to interaction with the seawater, the icebergs have their natural oscillations, which under certain environmental conditions can significantly complicate the towing process due to resonance phenomena. We should also notice that during the melting, icebergs will change form and motion characteristics. The paper...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3264
...), or by the placement of a small control cylinder in the cylinder wake (Strykowski & Sreenivansan, 1990). Active control methods include streamwise or transverse cylinder oscillations (Blackburn & Henderson 1999; Cetiner & Rockwell 2003), base-flow blowing or suction in either steady mode (Fransson et al...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3147
... ABSTRACT In Smoothed Particle Hydrodynamics (SPH) schemes, the density renormalization and density dissipation term are usually employed to suppress the unphysical high-frequency oscillation of pressure. The application of both the former two algorithms in liquid sloshing has been further...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3329
...-averaged current (RAC) showed the generation of 3-h oscillation embedded in the semidiurnal tidal current. The 3-h oscillation energy, about 3.7 h periods is bigger than 6-h period energy in the lower layer (V1 and V2) of power spectral density analysis. FIELD EXPERIMENT CAT System The CAT system consists...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3155
... machine learning parameter identification cross coupling algorithm system identification method artificial intelligence simulation coefficient system identification reinforcement learning ship oscillation heave-pitch motion engineering random sea identification haddara & xu...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-433
... encounter numerical instabilities, degenerate scale, and numerical dissipation problem. In order to eliminate the high-order numerical oscillations and noise disturbances on the boundary, the vector regularization method (VRM) and the multiple scale characteristic lengths (CLs) are applied. At the same time...

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