Abstract

CAPPELLETTI, Lucía; DEL GROSSO, Nicolás  and  COBELLI, Pablo. Development of a particle tracking velocimetry system for the lagrangian characterization of fluid flows. An. AFA [online]. 2018, vol.29, n.4, pp.97-110. ISSN 0327-358X.

In this paper we present the development and characterization of a velocimetry system based on individual particle tracking, specially designed for the lagrangian description of fluid flows. This system is based on the joint use of two high-speed cameras which synchronically observe a common region on the flow under study. We describe in detail the joint calibration procedure of the system, as well as the processing of individual images for calculating particle trajectories in three-dimensional space. Lastly, results are shown concerning the application of this measuring system to the dynamics of buoyant particle clustering on the free surface of a turbulent wave field.

Keywords : Velocimetry; Particle tracking; Lagrangian description of flows.