A study on the effect of slotted airfoil on the performance of Darrieus vertical axis wind turbines in different wind regions.

ABSTRACT: Slotted airfoils mitigate the flow separation on the blades operating at high angles of attack in the upwind region, consequently augmenting the power coefficient and reducing the startup wind speed of Darrieus vertical axis wind turbines (VAWTs). Nonetheless, the presence of the slot structure alters the original flow dynamics, inducing flow separation when the blade operates in the downwind region and at elevated blade tip speed ratios (TSR), which leads to a reduction in the blade's power coefficient. This study establishes an aerodynamic model of the flow field migration around the blade surface by utilizing the lattice Boltzmann method in conjunction with large eddy simulation to ascertain the influence of the inlet and outlet positions of the slot on the flow field structure across d

SUBMITTER: Luo L 

PROVIDER: S-EPMC12503311 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature