Particles for tracing turbulent liquid helium

Gregory P. Bewley, K. R. Sreenivasan, Daniel P. Lathrop

Research output: Contribution to journalArticlepeer-review


We address the problem of making quantitative measurements of local flow velocities in turbulent liquid helium, using tracer particles. We survey and evaluate presently available particles and previous work to establish the need to develop new particles for the purpose. We present the first practical solution for visualizing fluid motions using a suspension of solid hydrogen particles with diameters of about 2 μm. The hydrogen particles can be used to study flows with Taylor-microscale Reynolds numbers between 85 and 775. The particles can be used equally well with the PIV, LDV, or particle-tracking techniques.

Original languageEnglish (US)
Pages (from-to)887-896
Number of pages10
JournalExperiments in Fluids
Issue number6
StatePublished - Jun 2008

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • General Physics and Astronomy
  • Fluid Flow and Transfer Processes


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