Boundary layer control is the study and implementation of techniques to manipulate the behavior of the boundary layer, the layer of fluid adjacent to a solid surface where frictional effects are dominant. The goal of boundary layer control is to improve aerodynamic performance, increase efficiency, reduce drag, and enhance stability in various applications such as aerospace, automotive, and marine engineering. Some common techniques used in boundary layer control include active and passive flow control methods, such as the use of suction, blowing, roughness elements, vortex generators, and active flow control devices. By altering the characteristics of the boundary layer, researchers aim to optimize flow patterns, reduce separation, delay stall, and improve overall performance of vehicles and structures. Boundary layer control research is important in the development of more efficient and sustainable technologies, as it can lead to increased fuel efficiency, reduced emissions, and improved safety in various engineering applications.