浮式风机系统的气动-水动-锚泊系统耦合.PDF

浮式风机系统的气动-水动-锚泊系统耦合 的数值分析* 艾勇，程萍，万德成** (上海交通大学，海洋工程国家重点实验室，船舶海洋与建筑工程学院，高新船 舶与深海开发装备协同创新中心, 上海市东川路800号，邮编：200240 ，中国) 摘要：本文采用基于非稳态致动线模型求解三维N-S 方程的方法，对OC3 项目的 Hywindspar 形式的浮式风机进行其气动-水动-锚泊系统的耦合动力数值分析。本文计算分 析分为两个部分：一、将上部风轮受到的气动推力简化为定常力（力矩），作用于平台； 二、风机叶片简化为致动线模型耦合到万德成教授团队开发的CFD 求解器naoeFoam-SJTU 中，进行浮式风机系统的耦合动力分析。最后，对比分析两种情况下浮式风机系统的气动 以及水动力响应。分析结果显示，相对于简化力模型，基于致动线方法的耦合分析模型可 以有效且准确模拟分析浮式风机系统的气动-水动力性能。 关键词: 浮式风机；非稳态致动线；气动-水动力性能；耦合效应 Numerical Analysis of the Coupled Aerodynamics-Hydrodynamics-Mooring System for A Floating Offshore Wind Turbine Ai Yong, Cheng Ping, Wan Decheng (State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China) Abstract ：In this study, an unsteady actuator line model (UALM) coupled with a two-phase CFD solver is applied to solve 3-D N-S equation to focus on the coupled dynamic response of an aerodynamics-hydrodynamics-mooring system for a floating offshore wind turbine named OC3- hywindSpar. The numerical analysis is divided into two parts: first, the aerodynamic loads from the upper rotor is simplified into a constant thrust to apply to the platform; second, the UALM model is embed into the CFD solver called naoeFoam-SJTU to obtain the fully coupled dynamic effects with wind and wave excitation. Compared with the results conducted by simplified model and fully coupled model, it shows that the fully coupled model based on UALM can handle the interactive effects between the platform motion and aerodynamic loads more efficient and accurate. Keywords: floating offshore wind turbine; unsteady actuator line model ; aero-hydrodynamics; couple effects * 收稿日期： 作