Particle Image Velocimetry is a state-of-the-art non-intrusive flow ... Employing image analysis techniques instantaneous velocity vector fields are obtained in high spatial and temporal resolution.

The German Aerospace Center (Deutsches Zentrum für Luft- und Raumfahrt; DLR) large-scale PIV facility enables the quantitative visualisation of complex flow phenomena by means of instantaneous ...

By comparing the particle positions in successive images, the speed and direction of the flow can be precisely calculated ...