基于仿真数据库的固定式海上风—流联合发电机组尾流场数字孪生方法研究  

Research on Digital Twin Method of Wake Field of Fixed Offshore Wind-Current Combined Generator Based on Simulation Database

作　　者：曹宇 朱高阳 吴瑜 初文华[2] 王芳[1] CAO Yu;ZHU Gaoyang;WU Yu;CHU Wenhua;WANG Fang(College of Engineering Science and Technology,Shanghai Ocean University,Shanghai 201306,China;College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]上海海洋大学工程学院,上海201306 [2]上海海洋大学海洋科学学院,上海201306

出　　处：《中国造船》2024年第2期238-248,共11页Shipbuilding of China

摘　　要：海上风—流联合获能装置是未来海上新能源发电的优选设备型式之一,但联合发电机组尾流场相界面的变化规律尚不明确。论文将数字孪生方法与计算流体力学相结合,提出一种兼顾计算精度和速度的装置服役状态动力分析方法。基于VOF多相流模型和k-ε湍流模型建立流固耦合仿真模型,构建风-流联合发电机组尾流场仿真结果的数据库。然后应用线型插值和拉格朗日插值方法实现尾流场体积分数的空间映射和样本推演。提出的基于仿真数据库的数字孪生方法能实现对固定式海上风-流联合发电机组尾流场相界面变化规律的快速、精准预报。研究成果为优化海上新能源获能装置功率输出和快速、精准评估服役状态提供理论基础。Offshore wind-current combined generators are one of the preferred equipment types for future offshore new energy generation,but its influence on the phase interface in the wake field is still unknown.By combining the digital twin method with the computational fluid dynamics(CFD)method,a dynamic analysis method for the service state of the device is proposed.An air-fluid coupling simulation model is established based on the Volume of Fluid multiphase flow model and the k-εturbulence model,and a database of simulation results is built.The linear interpolation and Lagrangian interpolation methods are applied to achieve fast and accurate spatial mapping and derivation of the volume fraction in the wake field.The digital twin method is able to achieve fast and accurate prediction of the phase interface in the wake flow field,and the research results provide a theoretical basis for the optimal design of the power output of new offshore energy-generating devices and fast and accurate assessment of the service state.

关 键 词：风—流联合获能 CFD模型 数字模型 数字孪生 相界面 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]