Particle Image Velocimetry Techniques

This course covers the comprehensive understanding of Particle Image Velocimetry (PIV), a flow visualization technique used in aerodynamics. It explains the process of using tracer particles to measure flow field velocity, the role of illumination, lasers, optics, and computer techniques in capturing accurate images. The course also discusses the importance of homogeneous distribution of these particles and the potential for improving temporal resolution with high-speed lasers and cameras. For instance, the course provides an example of using PIV in a wind tunnel setup. It further delves into the intricacies of light sheet optics, the role of lenses, and the use of different types of cameras in PIV applications. The course concludes with practical examples of PIV applications in experimental setups and a discussion on how to measure the test section Mach number in a supersonic wind tunnel.