Three-dimensional tracking of the long time trajectories of suspended particles in a lid-driven cavity flow
Resource
Experiments in Fluids 40: 314-328
Journal
Experiments in Fluids 40
Pages
314-328
Date Issued
2006
Date
2006
Author(s)
Abstract
Stereo imaging methods are used to measure the positions of solid spherical particles suspended in a viscous liquid and enclosed in a transparent cubic cavity. The liquid and particle motions are driven at the top lid by a conveyor belt operated at constant speed. Based on sequences of stereo views of the full cavity, the particles are tracked continuously along their three-dimensional orbits. The corresponding position histories are treated as noisy stochastic data and processed using Kalman filters to fill data gaps and attenuate the effect of measurement errors. The lid-driven viscous flow is characterised by an intricate internal structure which is mirrored in the particle paths. The tracks of the solid particles align with long exposure images of laser-illuminated micro-particles in selected transverse planes. Nevertheless, their long time trajectories appear to cluster along preferential pathways of the internal circulation pattern.
Type
journal article
File(s)![Thumbnail Image]()
Loading...
Name
2.pdf
Size
791.79 KB
Format
Adobe PDF
Checksum
(MD5):ad9446795f30e8049a5bf928d44f25c7