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