Invited: Recent Advances in Particle Image Velocimetry

Recent advances in particle image velocimetry (PIV) have taken it far beyond its original role as a two-dimensional velocity measurement technique. The combination of improved hardware, algorithmic innovations and interdisciplinary synergies positions PIV as a highly flexible and powerful tool supporting modern aerospace science applications. In this article, important current developments will be presented in detail to demonstrate their capabilities for volumetric measurement, time-resolved data sequences, large-scale applications, Lagrangian particle tracking, overcoming optical access restrictions, incorporation of machine-learning technologies, and adoption of emerging camera technologies.