Recent Advances in Shake-the-Box Lagrangian Particle Tracking

3D Lagrangian particle tracking (LPT) allows for position, velocity, and acceleration to be determined alongside a large number of individual particle tracks in the investigated volume. The advent of the dense 3D LPT technique Shake-The-Box (STB) in the past decade has opened further possibilities for characterizing unsteady flows by delivering input data for statistical analysis and powerful data assimilation techniques that use Navier–Stokes constraints. As a result, high-resolution Lagrangian and Eulerian data can be obtained, including long particle trajectories embedded in time-resolved 3D velocity and pressure fields. In the presentation recent advances in some key aspects of the STB technique will be addressed that aim at higher accuracies and particle image densities.