| 风机基础TLP平台在波浪中运动性能的CFD数值分析 |
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| 引用本文： | 安筱婷,赵伟文,万德成.风机基础TLP平台在波浪中运动性能的CFD数值分析[J].海洋工程,2020,38(5):35-49. |
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| 作者姓名： | 安筱婷 赵伟文 万德成 |
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| 作者单位： | 上海交通大学 船舶海洋与建筑工程学院 海洋工程国家重点实验室 船海计算水动力学研究中心(CMHL), 上海 200240 |
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| 基金项目： | 国家自然科学基金项目（51879159）；国家重点研发计划项目（2019YFB1704200，2019YFCO312400）；长江学者奖励计划（T2014099）；上海市优秀学术带头人计划（17XD1402300）；工信部数值水池创新专项课题（2016-23/09） |
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| 摘 要： | 随着海上风能的开发向深水发展，支撑风机的载体平台越来越受到关注。在经济性与安全性、稳定性的多重要求下，张力腿平台（TLP）在海洋风能资源的开发中体现出了重要地位。采用基于开源平台OpenFOAM开发的计算流体动力学（CFD）水动力学求解器naoe-FOAM-SJTU对一座处于中等水深下的风机基础水下TLP（STLP）的运动响应进行了数值模拟与研究。文中使用弹簧锚链模型模拟STLP的垂向系泊锁链系统，模拟该平台在不同波浪环境下的运动响应情况。首先将STLP单自由度自由衰减CFD模拟结果与已有全耦合时域分析结果进行对比，验证了naoe-FOAM-SJTU求解器及使用弹簧模型模拟STLP系泊系统的准确性与可靠性。随后在考虑非线性波浪载荷的情况下研究极端海况下与一般作业海况下STLP的运动响应情况，计算工况中的风机基础所受弯矩及锚链受力情况，并详细展示流场、速度场信息，分析高阶波浪成分、不同海况等条件对于STLP运动性能的影响。研究结果表明，TLP在中等水深中具有良好的运动性能，naoe-FOAM-SJTU求解器可以有效模拟水中生产平台在波浪环境下的水动力问题，并可以对整个流场进行可视化展示与分析。
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| 关 键 词： | STLP 锚链系统 naoe-FOAM-SJTU求解器 水动力 |
| 收稿时间： | 2019/11/4 0:00:00 |
CFD numerical analysis of hydrodynamic and kinematic performance of a STLP |
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| AN Xiaoting,ZHAO Weiwen,WAN Decheng.CFD numerical analysis of hydrodynamic and kinematic performance of a STLP[J].Ocean Engineering,2020,38(5):35-49. |
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| Authors: | AN Xiaoting ZHAO Weiwen WAN Decheng |
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| Institution: | Computational Marine Hydrodynamics Lab, State Key Laboratory of Ocean Engineering, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China |
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| Abstract: | With the development of offshore wind energy to deep water, the carrier platforms supporting wind turbines have been paid more and more attention to. Under the multiple requirements of economy, safety and stability, tension leg platform (TLP) plays an important role in the development of offshore wind energy resources nowadays. The computional fluid dynamics (CFD) hydrodynamic solver naoe-FOAM-SJTU, based on open source platform OpenFOAM, is used in this study to do the numerical simulations of a turbine-based submerged TLP (STLP) at medium water depth. The spring mooring liner chain model is used to simulate the vertical mooring system of STLP, and the motion responses of the platform in different wave environments are also simulated. First of all, the results of the CFD simulation of single-degree-of-freedom free decay of STLP are compared with the results of the existing fully-coupled time domain analysis, and the accuracy and reliability of the naoe-FOAM-SJTU solver as well as the STLP mooring system are validated. Then, in considering the nonlinear wave load, the motion response of STLP under extreme sea conditions and moderate operating sea conditions is studied, the bending moment and mooring force of the platform in two conditions are calculated, and the flow field and velocity field information are shown in detail. The effects of the higher-order wave, different wind field types, and different sea conditions on the performance of STLP motion are studied. The results show that the TLP platform has good hydrodynamics performance in medium water depth, and the naoe-FOAM-SJTU solver can effectively simulate the hydrodynamic problem of the platform in a wave environment, and can visualize the flow field. |
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| Keywords: | STLP mooring system naoe-FOAM-SJTU solver hydrodynamics |
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