Flow visualization is a research area that focuses on creating visual representations of fluid flow patterns and dynamics. This visual representation can help researchers and engineers better understand and analyze the behavior of fluids in various systems and environments. Flow visualization techniques can include using dyes, particles, or sensors to track the movement of fluids, as well as using advanced imaging technologies such as high-speed cameras or computer simulations to capture and analyze flow patterns. These visualizations can provide valuable insights into phenomena such as turbulence, vortices, and boundary layer separation, and can be used to optimize the design and performance of various systems, such as aircraft, vehicles, and pipelines.