Visualizing large-scale flow using synthetic aperture PIV

Journal article (2020)

Authors

Josje van Houwelingen Eindhoven University of Technology
Ad P.C. Holten Eindhoven University of Technology
Herman J.H. Clercx Eindhoven University of Technology
Rudie P.J. Kunnen Eindhoven University of Technology
Jaap Molenaar Wageningen University & Research
W. van de Water Eindhoven University of Technology, Fluid Mechanics - Mechanical, Maritime and Materials Engineering
Research Group
Fluid Mechanics (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2020 Josje van Houwelingen, Ad P.C. Holten, Herman J.H. Clercx, Rudie P.J. Kunnen, Jaap Molenaar, W. van de Water
DOI: https://doi.org/10.1007/s00348-019-2836-9
More Info
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Published Date

2020

Language

English

Faculty

Mechanical, Maritime and Materials Engineering

Department

Process and Energy

Research Group

Fluid Mechanics

Abstract

Abstract: We discuss the application of synthetic aperture particle image velocimetry for measuring the flow around human swimmers using small bubbles as tracer. We quantify the two-dimensional projection of the velocity field in planes perpendicular to the viewing direction of an array of six cameras. With help of simulations, modelled after the experiment, we address questions about depth selectivity and occlusion in dense bubble fields. Using vortex rings in the swimming pool, we provide a proof of principle of the method. It is further illustrated by the vorticity field produced by a human swimmer. Graphic abstract: [Figure not available: see fulltext.].