Fluid-structure interaction is a research area that studies the interactions between fluids (such as air or water) and structures (such as buildings, bridges, or vehicles). This field is important in various engineering applications, including aerospace engineering, civil engineering, and biomechanics. In fluid-structure interaction, the behavior of both the fluid and the structure are considered simultaneously, as they can influence each other's motion and properties. As the fluid flows around or interacts with the structure, it can exert forces, induce vibrations, or cause deformation in the structure. Conversely, the motion and deformation of the structure can also affect the flow of the fluid. Research in fluid-structure interaction involves the development of computational models, experimental techniques, and analytical methods to study and predict the behavior of fluid-structure systems. This research is crucial for designing and optimizing engineering systems that involve interactions between fluids and structures, such as aircraft wings, offshore platforms, and cardiovascular devices.