An Optical Flow technique based on the use of Dynamic Programming has
been applied to Particle Image Velocimetry yielding a significant
increase in the accuracy and spatial resolution of the velocity field.
Results are presented for an interaction between a laminar boundary
layer and a cavity.
The experimental characterization of the interaction between a boundary layer and a cavity was developed in order to valid a three dimensional computation code based on the L.E.S. method (Large Eddies Simulation). The main application of this work is the study of the pollutant transport and dispersion in a canyon street.