Zamana bağlı akış alanının açık kaynak programlar ile aerodinamik incelemesi

In this study, the aerodynamic analysis of the NREL S826 wind turbine blade profile, which has been a frequent topic of research in recent years, was conducted using the open-source computational fluid dynamics (CFD) software OpenFOAM. For the solution of the two-dimensional flow field, the k-ω SST and Langtry-Menter Transition SST (\gamma-{\widetilde{R}e}_{\theta t}) turbulence models were employed, while the Transition SST (\gamma-{\widetilde{R}e}_{\theta t}) model was used for three-dimensional analyses. All simulations were time-dependent and solved using pimpleCentralFoam, a pressure-based, semi-implicit hybrid solver. The obtained data were compared with experimental results and examined in detail. The findings revealed that the hybrid solver used, combined with the Transition SST (\gamma-{\widetilde{R}e}_{\theta t}) turbulence model—frequently preferred for modeling transition to turbulence—worked efficiently together and produced results closely aligned with experimental data. Additionally, the numerical method employed in this study offered a unique approach compared to other studies in the literature, demonstrating significant success in predicting the characteristics of pre-stall, stall, and post-stall conditions.