Effects of particle size, concentration and surface coating on turbulent flow properties obtained using PIV/PTV

T. Hadad, R. Gurka

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

It is commonly assumed that seeding particle parameters have negligible influence on the deduced velocity field when making measurements using Particle Image Velocimetry (PIV) and Particle Tracking Velocimetry (PTV) methods. Although there is extensive research examining various aspects of PIV/PTV analysis there is limited research examining the effects of the seeding particles on the turbulent flow results. In this study, we investigated the influence of the particles on the derived fields. For that purpose, we have measured the velocity field in a canonical flow of lid driven cavity using PIV and PTV while varying only the particle parameters. We examine the particle influence on the turbulent quantities as well as the velocity derivatives by applying a standard statistical test. At higher Reynolds numbers the influence of the particle parameters was larger. The size of seeding particles had the largest influence on velocity and acceleration in comparison to the other parameters. The concentration and the chemical treatment did not affect the results independently. However, there is some effect when these two parameters were changed in conjunction.

Original languageEnglish
Pages (from-to)203-212
Number of pages10
JournalExperimental Thermal and Fluid Science
Volume45
DOIs
StatePublished - 1 Feb 2013

Keywords

  • Cavity flow
  • Particle image velocimetry
  • Particle tracking velocimetry
  • Tracer particles

ASJC Scopus subject areas

  • General Chemical Engineering
  • Nuclear Energy and Engineering
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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