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Keywords: mechanism
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Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1205
... sustainability fowt mooring system support structure reference turbine turbine maintenance operation subsea system social responsibility mechanism operation friction lock availability hourglass interface entrance platform sustainable development renewable energy maintenance bluewind floater...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1281
... Abstract The paper considers the main factors influencing the height of ice rubble pile formed during the interaction of ice and an inclined structure. The main factors determining the development of ice rubble pile against an obstacle are presented. The article suggests the mechanisms...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-3215
... or suppress such vortex–induced vibration. In this paper, we firstly simulate typical vortex dominant flow problems (e.g. around rigid cylinder flows) by commercial software STAR–CCM+ and the in–house unstructured Navier–Stokes solver. This helps to investigate the mechanism of vortex formation in the wake...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1104
... joint delay feedback control (L-S DFC) mechanism, established by controlling the boom's pitch and rotation motion. This paper also has given the real-time simulation of the controller carried out in time domain. The experimental results show that, compared with the existing control method based...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-1129
... Abstract The measuring precision of the velocity plays an important role in the motion control system. This paper proposes a high-precision underwater velocity measurement system based on a mechanical velocity measurement device and the Kalman filter algorithm; which can effectively increase...
Proceedings Papers

Paper presented at the The 31st International Ocean and Polar Engineering Conference, June 20–25, 2021
Paper Number: ISOPE-I-21-2151
... for silts during shear, they could be regarded as cohesive soils in the analysis of foundation bearing capacity (Chi et al., 2019). Brown and Meyerhof (1969) and SNAME (2008) indicated that there are at least three different foundation failure mechanisms in layered soils: I) general shear failure; II...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1107
... the requirements of walking speed and crossing obstacles as far as possible, the currently underwater walking robots commonly use a fixed track walking mechanism. However, the speed of the fixed track mechanism can not be effectively improved in hard ground and a single wheel mechanism may not move quickly in soft...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2210
... Field tests suggest that the T-bar factor may vary over a large range for calcareous soils. As the T-bar penetrates very deep into soft soil, a full flow-round mechanism is formed around the T-bar. Examining the stress states around this mechanism suggests that soil elements are subjected...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2179
... significant narrowing of the range in which the material behaves linearly and is particularly pronounced for steels that are not subjected to (light) heat treatment after cold forming. The collapse mechanism is a typical design driver for pipelines in deep and ultra-deep water. However, it can also...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3122
... strategy based on Gaussian Process Regression (GPR), drastically reducing the number of simulations and accelerating the scientific findings. We also discussed the effects of parameters on different hydrodynamic coeffcients, and verified the feasibility of this strategy. The mechanism of this asymmetric...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2111
... sets two basic behaviors of altitude keeping and collision avoidance and a behavior fusion control mechanism. The fuzzy Proportion Differentiation (PD) controller is used to achieve the fixed height behavior, and the fuzzy logic control is used to achieve a collision avoidance behavior. It can overcome...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2139
... will largely affect the growth of Tin-whiskers. This article summarizes the current research on Tin-whiskers: the mechanism of its growth and latest methods of attenuating whiskers' growth, which provide theoretical and experimental support for higher reliability and lower cost of maintenance of off-shore...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3104
... and ALDR are all present in the experimental test. MBDR is dominant for low flux rate while ALDR is dominant for high flux rate. Their transition is restricted to a very narrow region, similar to a phase transition characterized by a sharp jump from one mechanism to another. Based on such observations we...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-3146
... is applied to investigate the ISWs interaction with the submarine slopes with different inclinations, and a qualitatively analysis of the different breaking mechanisms is performed. INTRODUCTION Due to the rapid changes of temperature and salinity, the density stratification phenomena have been frequently...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-324
... the maximum bearing capacity of the stronger layer and hence causing the spudcan to penetrate rapidly into the lower softer layer which has a much lower bearing capacity (Teh et al., 2009). It may lead to the leg buckling or even toppling of the rig. To study the punch through mechanism in the location where...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-038
... ABSTRACT In order to study the inhibition effects of placed obstacles and control mechanism of the re-entrant jet on the generation of the cloud cavitation, numerical simulations are performed on elliptic nose hydrofoils equipped with and without obstacles. A new modified stabilized SST k-ω...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-015
... like STAR-CCM+ and Abaqus, including the experimental study in our cycle water tank. This helps to investigate the mechanism of vortex formation in the wake and free-surface for typical problems involving the flow around a cylinder, water entry or exit or both and viscous hydroelasticity of the ship...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-180
... ABSTRACT To study the dynamic process, damage evolvements, and failure mechanisms of rock under the impact of angled water jet, the Lagrangian-Euler algorithm is used. Based on the fluid-solid coupling, a model of angled water jet impacting rock that could reflect the influence of the water...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-234
... A New Recommender System for Determining Trim and Flight Parameters of Seagliders Enrico Anderlini and Giles Thomas Department of Mechanical Engineering, University College London London, United Kingdom Catherine Harris Marine Autonomous and Robotic Systems, National Oceanography Centre...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-356
... is used to calculate the unsteady natural and ventilated cavitating flow and the accuracy of the numerical simulation method is validated by comparison with the experimental results. The evolution characteristics of the pressure fluctuations and the cavity shedding are analyzed. The evolution mechanism...

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