Particle tracking velocimetry in liquid gallium flow around a cylindrical obstacle

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Mihails Birjukovs - , University of Latvia (Author)
  • Peteris Zvejnieks - , University of Latvia (Author)
  • Tobias Lappan - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Martins Sarma - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Sascha Heitkam - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Pavel Trtik - , Paul Scherrer Institute (Author)
  • David Mannes - , Paul Scherrer Institute (Author)
  • Sven Eckert - , Helmholtz-Zentrum Dresden-Rossendorf (HZDR) (Author)
  • Andris Jakovics - , University of Latvia (Author)

Abstract

This paper demonstrates particle tracking velocimetry performed for a model system wherein particle-laden liquid metal flow around a cylindrical obstacle was studied. We present the image processing methodology developed for particle detection in images with disparate and often low signal- and contrast-to-noise ratios, and the application of our MHT-X tracing algorithm for particle trajectory reconstruction for the wake flow around the obstacle. Preliminary results indicate that the utilized methods enable consistent particle detection and recovery of long, representative particle trajectories with high confidence. However, we also underline the necessity of implementing a more advanced particle position extrapolation approach for increased tracking accuracy. Satisfactory tracking accuracy can be inferred from the fact that the fluctuations in the measured particle velocity are dominated by frequencies that agree sufficiently well with the expected frequencies of the cylinder wake. Graphical abstract: [Figure not available: see fulltext.].

Details

Original languageEnglish
Article number99
JournalExperiments in fluids
Volume63
Issue number6
Publication statusPublished - Jun 2022
Peer-reviewedYes
Externally publishedYes

External IDs

WOS 000804787900003
Scopus 85131155047

Keywords

Library keywords