Proof-of-concept study of Coherent Point Drift registration for particle pairing in Particle Tracking Velocimetry
Résumé
The Coherent Point Drift (CPD) technique is applied for the first time to find pairs of particles between two subsequent sets of particles in the context of 3D Particle Tracking Velocimetry. Contrary to conventional method, CPD does not require any prior knowledge on the flow. The performances of this pairing method are quantitatively assessed on sets of particles generated from a synthetic turbulent flow. The method is found to provide consistent results for displacements up to two times the mean distance between particles, even when the number of ghost particles is equal to the number of true particles. The displacements obtained from the particle pairing are then successfully regularized to obtain velocity fields on a regular grid via an interpolation based on radial basis functions with a constraint on the divergence of the field.
Origine : Fichiers produits par l'(les) auteur(s)
Licence : CC BY NC - Paternité - Pas d'utilisation commerciale
Licence : CC BY NC - Paternité - Pas d'utilisation commerciale