Using PIV laser technique to determine velocity fields in laboratory turbulent flows.

Abstract

This work presents the use of laser velocimetry to obtain turbulence details and fluid flow characteristics, through the description of two studies in which this technique has been used: generation of turbulence by oscillating grids and sediment settling in a reduced physical model of a reservoir. In the first study, the laser velocimetry was used for observation and measurement of the generated turbulence. For the reservoir, it aided as a tool for the comparison between the sediment settling data and the predictions obtained with a numerical model, which demonstrated the advantages of using numerical procedures to predict settling. In both studies, developed in laboratory, the results showed the adequacy of such technique.

Keywords

• velocimetria a laser. velocimetria por imagem de partícula.