Analysis of a Moored and Articulated Multibody Offshore System in Steep Waves

IF 1.3 4区工程技术 Q3 ENGINEERING, MECHANICAL

Journal of Offshore Mechanics and Arctic Engineering-Transactions of the Asme Pub Date : 2022-12-19 DOI:10.1115/1.4056522

Changqing Jiang, Peng Xu, O. el Moctar, Guiyong Zhang

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引用次数: 2

Abstract

Wave-induced motions of and loads on a moored and articulated multibody offshore structure are numerically analyzed, where a coupled mooring-joint-viscous flow solver was used to account for mooring dynamics, joint restrictions, nonlinear rigid body motions, and viscous flow effects. The considered concepts consisted of two MFSs connected by two types of connections, namely a rigid joint and a flexible joint, and positioned by four symmetrical catenary mooring lines. The analyzed responses comprised multibody motions as well as associated forces acting in the hinged joints and the mooring lines. Results indicated that surge motions of the articulated bodies were almost identical to each other, whereas the effects of the joint on heave motions were not pronounced. However, highly dynamic pitch motions between two hinged MFSs were observed. Apart from motion responses, forces acting on the hinged joint and the mooring lines were estimated. The coupled mooring-joint-viscous flow solver demonstrated its capability to predict wave-induced motions of and loads on a moored multibody offshore structure articulated by various types of joints.

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系泊和铰接式多体海洋系统在巨浪中的分析

对系泊和铰接多体海上结构的波浪诱导运动和载荷进行了数值分析，其中使用耦合系泊关节粘性流求解器来考虑系泊动力学、关节限制、非线性刚体运动和粘性流效应。所考虑的概念包括两个MFS，它们由两种类型的连接件连接，即刚性接头和柔性接头，并由四条对称的悬链线系泊缆定位。分析的响应包括多体运动以及作用在铰接接头和系泊缆中的相关力。结果表明，铰接体的涌浪运动基本相同，而关节对升沉运动的影响并不明显。然而，观察到两个铰接MFS之间的高度动态俯仰运动。除了运动响应外，还估算了作用在铰接接头和系泊缆上的力。耦合系泊关节粘性流求解器证明了其预测由各种类型的关节铰接的系泊多体海上结构的波浪诱导运动和载荷的能力。

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来源期刊

Journal of Offshore Mechanics and Arctic Engineering-Transactions of the Asme 工程技术-工程：大洋

CiteScore

4.20

自引率

6.20%

发文量

审稿时长

6-12 weeks

期刊介绍： The Journal of Offshore Mechanics and Arctic Engineering is an international resource for original peer-reviewed research that advances the state of knowledge on all aspects of analysis, design, and technology development in ocean, offshore, arctic, and related fields. Its main goals are to provide a forum for timely and in-depth exchanges of scientific and technical information among researchers and engineers. It emphasizes fundamental research and development studies as well as review articles that offer either retrospective perspectives on well-established topics or exposures to innovative or novel developments. Case histories are not encouraged. The journal also documents significant developments in related fields and major accomplishments of renowned scientists by programming themed issues to record such events. Scope: Offshore Mechanics, Drilling Technology, Fixed and Floating Production Systems; Ocean Engineering, Hydrodynamics, and Ship Motions; Ocean Climate Statistics, Storms, Extremes, and Hurricanes; Structural Mechanics; Safety, Reliability, Risk Assessment, and Uncertainty Quantification; Riser Mechanics, Cable and Mooring Dynamics, Pipeline and Subsea Technology; Materials Engineering, Fatigue, Fracture, Welding Technology, Non-destructive Testing, Inspection Technologies, Corrosion Protection and Control; Fluid-structure Interaction, Computational Fluid Dynamics, Flow and Vortex-Induced Vibrations; Marine and Offshore Geotechnics, Soil Mechanics, Soil-pipeline Interaction; Ocean Renewable Energy; Ocean Space Utilization and Aquaculture Engineering; Petroleum Technology; Polar and Arctic Science and Technology, Ice Mechanics, Arctic Drilling and Exploration, Arctic Structures, Ice-structure and Ship Interaction, Permafrost Engineering, Arctic and Thermal Design.