Dense particle tracking of inertial and Lagrangian particles in isotropic turbulence flows EuHIT Funded Project

Team

Angel Daniel Garaboa-Paz
University of Santiago de Compostela, Santiago de Compostela, Spain
Emilio Hernandez-Garcia
IFISC (CSIC-UIB), Palma de Mallorca, Spain
Florian Huhn
German Aerospace Center (DLR), Göttingen, Germany
Jan Molacek
Max Planck Institute, Göttingen, Germany
Daniel Schanz
Deutsches Zentrum für Luft- und Raumfahrt, Göttingen, Germany
Stephan Weiss
Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany

Overview

Research Infrastructure
Max Planck High-Turbulence Facility, Germany
Facilities used
von Karman Flow Apparatus (GTF3)
Project leader
Vicente Perez-Munuzuri
University of Santiago de Compostela, Santiago de Compostela, Spain

Abstract

Until now, Lagrangian particle tracking was limited to at most a few thousands of instantaneously tracked particles. With the novel Shake-The-Box tracking algorithm, the particle number can be increased by a factor of 100, depending on the size of the camera sensor, resulting in dense measurements of particle trajectories and the derived velocity and acceleration. We propose to perform three-dimensional time-resolved flow measurement with this method in isotropic turbulence. The von Karman flow facility allows for experimental research of high Reynolds number isotropic turbulence with well controlled boundary conditions, while providing optical access for multi-camera particle tracking. In this proposal, we plan to use the facility to measure dispersion and mixing properties from experimental data for different turbulent parameters. Experiments will include measurements with Lagrangian tracers in order to measure the flow field, as well as inertial particles, bubbles in particular, in order to study clustering and possibly observe collisions.