| Main Site areas:
Where can you go from here? |
PIV - Particle Image Velocimetry
PIV is the recently developed technique for fluid velocity measurements.
It has advantages over other fluid velocity measurement techniques, these are:-
 | Quantitative fluid velocity information |
| Instantaneous 2-dimensional fluid velocity fields |
| No disturbance to fluid flows |
| Vorticity and strain rate information by converting velocity fields |
The Principle of PIV
This technique is two-dimensional and produces two component velocity maps of a plane. The flow is seeded with small particles, then the plane of interest is pulsed with laser light. The multiple images of particles in the plane are captured on camera and then analysed. Then with the use of information from timing tests the velocities of the particles are captured.
Fig.1 Particle image recording in PIV
Determining the velocity vector in one grid.
Fig.2 Schematics of PIV image analysis. Dividing into grids and determination of particle moving displacement is illustrated
| OELWeb Features: |
| Undergraduate course notes can be found
here.
Download FRAN, our fringe analysis software that's free for non-commercial use. Ever heard an opera singer shake the house down? See what they are doing to themselves. Do you know how an internal combustion engine works? Find out here. |