2D computational study of the aerodynamics of the S4110 airfoil at low wind speeds using QBLADE and XFLR5

The design of the wind turbine blades has a significant impact on the operation of the wind turbine. Therefore, the cross-sectional structure of the airfoil needs to be simulated by specialized software to evaluate the impact on the performance of the wind turbine, especially in the low wind speed region. This paper studies the aerodynamic characteristics such as lift coefficient (CL), drag coefficient (CD) and ratio (CL/CD) in the attack angle ranges from -8 degrees to 10 degrees of the S4110 airfoil model under low wind velocity (3 m/s) using QBLADE and XFLR5 software with Reynolds coefficient margin conditions of 200000, Mach coefficient of 0.3 and Ncit coefficient of 9. Evaluate the ability to analyze aerodynamic parameters. The purpose of the study is to verify the accuracy of the two software in wind turbine design under low wind velocity by comparing the simulation results with experimental data from Airfoiltool. The results showed that both the QBLADE and XFLR5 achieve high accuracy at small attack angles (from -4.5 degrees to 4 degrees), with an error of less than 5%. Besides, the optimal angle of attack of the model is determined with the value of 4 degrees and a Ratio (CL/CD) value of 80.02