Fluid-structure interaction (FSI), also known as fluid-structure analysis, is a physical phenomenon in which a fluid (a liquid or a gas) and a solid structure interact with each other. In FSI systems, the movements of the fluid interact with the deformations or movements of the structure, and vice versa. This phenomenon occurs in a variety of real-world applications and is critical to understanding and modeling the behavior of systems in different industries. FSI is often combined with numerical simulation methods such as Finite Element Analysis (FEA) or Computational Fluid Dynamics (CFD) to model and predict the interactions between fluids and structures. This enables engineers and researchers to study the behaviour of systems in complex and realistic scenarios and to optimize products and designs.