Abstract: The VGs(Vortex generators) parametric model of can effectively improve the numerical simulation efficiency of wind turbine blades with VGs. At present, the VGs parametric model has some problems such as low accuracy and poor applicability. In order to improve the application accuracy of VGs parametric model on blade segment, the application methods of VGs parametric model are proposed, such as source term adding method, location and the grid of source term region. Based on the array VGs parametric model, Lamb-Oseen vortex model and the above application methods, the DU91-w2-250 blade with VGS is taken as the research object. The parametric simulation data are compared with the VGs solid model and the literature test results, and the results show that the three are in good agreement, which proves the effectiveness of the simulation method and the credibility of the data. The numerical results of parametric modeling and solid modeling are compared and analyzed at different incoming wind velocities and angle of attack to verify the universality of the simulation method under operating conditions. The research results show that:the vortex structure and pressure coefficient distribution calculated by the two models have high consistency on the whole, and are less affected by the incoming flow power angle and the incoming wind velocities, which proves that the parametric model has high accuracy and universality, and can be applied to wind turbine blade instead of solid model.

Key words: vortex generator, parametric modeling method, numerical simulation, wind turbine, DU91-W2-250