Controlling rotor blade flow separation and dynamic stall is required to improve the aerodynamic performance of horizontal axis wind turbine (HAWT) blades. Active and passive flow controls are the two basic methods for controlling the flow state. The use of passive and/or active flow management strategies to improve the aerodynamic performance of the blade is common. Many publications are currently being conducted to determine the impact of various passive and active strategies on the aerodynamics of blades. Active flow control is limited since it requires an extra controller, actuators, and power source to control the flow. Passive flow control, on the other hand, is more straightforward and less expensive. As a result, passive flow control is more beneficial in real-world applications, but only under certain conditions. Researchers are developing improved designs for HAWT blades, the main component of the turbine responsible for power generation. CFD is a versatile and powerful tool for simulating and analyzing airflow over wind turbines. It can provide detailed information about the flow field around the turbine, including velocity, pressure, and turbulence. This information can be used to understand the aerodynamic forces acting on the turbine and to identify areas for improvement. CFD has been used to develop a variety of design and optimization strategies for wind turbines, leading to significant improvements in aerodynamic performance.