What is particle tracking velocimetry?

Particle tracking velocimetry is an experimental technique used to measure the velocities and trajectories of moving objects, typically neutrally buoyant particles suspended in fluid flows. By tracking individual particles over time, it provides a Lagrangian approach to fluid mechanics research. This method includes both two-dimensional and advanced three-dimensional setups utilizing multiple cameras.

What we know

• Particle tracking velocimetry is a technique used to measure the velocities and trajectories of moving objects suspended in fluid flow. [1, 2]
• Unlike particle image velocimetry, which is an Eulerian method measuring fluid velocity at fixed observation points, particle tracking velocimetry tracks individual particles in a Lagrangian approach. [2]
• Three-dimensional particle tracking velocimetry uses a multi-camera stereoscopic system and photogrammetric techniques to determine instantaneous 3-D positions and trajectories. [2]

Where to go next

• compared withHow does particle image velocimetry differ?
• the bigger pictureWhat is fluid mechanics?
• how it workedHow does laser Doppler velocimetry work?
• how we knowWhat is time of flight measurement?
• a case in pointWhere is 3D particle tracking velocimetry applied?
• an unexpected connectionHow does time of flight relate to velocimetry?Time of flight technology can be used indirectly in laser Doppler velocimetry by measuring light scattered from objects.

Sources

• [1]Particle tracking velocimetry (Wikidata Q7140505) · CC0 1.0
• [2]Particle tracking velocimetry · CC BY-SA 4.0
• [3]Laser Doppler velocimetry · CC BY-SA 4.0
• [4]Time of flight · CC BY-SA 4.0
• [5]Fluid mechanics · CC BY-SA 4.0