Numerical Study of the Flow Around the S818-NR Aerodynamic Profile Based on Modern Turbulence Models

This study examines the subsonic airflow around a S818-NR air foil at angles of attack from 0° to 20° through numerical simulation. The calculations were done in COMSOL Multiphysics using the finite element method. The Shear Stress Transport (SST) model was used to accurately capture the complicated nature of turbulence. We got numerical results for important aerodynamic parameters like lift coefficient, pressure distribution, and velocity components. A comparative analysis of various Reynolds numbers was performed to assess their impact on the flow structure. The simulation results were very similar to the experimental data, which showed that the chosen turbulence model and numerical method were reliable. The data collected help us better understand how turbulent flow works around aerodynamic profiles, and they can be used to design and improve wind turbines.

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