FlowFit3: Fast Data Assimilation for Recovering Instantaneous Details of Incompressible Flows based on scattered data

Kurzfassung

This works presents an evolution of the FlowFit method for reconstructing incompressible flow fields (specifically velocity and pressure) based on scattered velocity and acceleration data. It can thus be used to process the data obtained from Lagrangian Particle Tracking (LPT) in order to recover structures of fluid motion. The goal of this development was to improve both accuracy and speed over its predecessor so this method can be used in experiments with large measurement domains and/or a high number of seeding particles. The method will be explained and assessed in comparison with its predecessor using synthetic data derived from fluid simulations.