Particle Imaging Velocimetry technique has gained
significant popularity in engineering and scientific
fluid mechanics from aerospace wind tunnels
to prosthetic heart valve vortex formation.
PIV is used to measure instantaneous velocities
and other properties in fluids and gases.
Fluid, seeded with small tracer particles
that follow flow dynamics, is
illuminated by a laser to make the
particles visible. A camera takes a
series of images from which speed
and direction of the particles