Particle Image Velocimetry (PIV) is a powerful optical technique used to measure fluid flow velocities in a wide range of applications. In PIV experiments, tiny tracer particles are seeded into the fluid, and a laser sheet illuminates the particles, which scatter light captured by the high frame rate camera. By capturing successive images of the illuminated particles at high frame rates, the camera records their displacement over a short time interval. PIV software then analyzes these image pairs to determine the velocity field of the fluid. High-speed cameras enable PIV systems to capture rapid fluid flow phenomena with precision, providing detailed velocity measurements essential for understanding fluid dynamics in aerodynamics, hydrodynamics, combustion, and other fields. The high temporal and spatial resolution afforded by high-speed cameras allows researchers to investigate complex flow phenomena, optimize designs, and improve the efficiency of various engineering systems.
