When a fluid, such as air, flows past a cylinder, the aerodynamics of the flow are influenced by several phenomena. One of the most significant factors is the formation of a boundary layer, which is a thin layer of fluid that develops along the surface of the cylinder. This boundary layer is characterized by a gradual increase in velocity from zero at the surface of the cylinder to the free stream velocity of the fluid outside the boundary layer. The thickness of the boundary layer depends on various factors such as the velocity and viscosity of the fluid and the size of the cylinder. The behavior of the boundary layer is important in determining the drag and lift forces on the cylinder, which are crucial in many practical applications such as aerodynamics of vehicles, fluid flow through pipelines, and wind turbine design.