Motion of micron-size particles in turbulent helium II

Y. A. Sergeev, C. F. Barenghi, D. Kivotides

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The surprising result of a recent experiment in turbulent helium II is that micron-size tracer particles move with about half the speed of the imposed normal fluid. We develop a theory of the interaction of small spheres with quantized vortices and predict that the particles' slip velocity (resulting from the balance of buoyancy and Stokes drag forces) must be corrected by an amount which is proportional to the normal fluid velocity, in quantitative agreement with the observations.
Original languageEnglish
Article number184506
Number of pages5
JournalPhysical Review B: Condensed Matter and Materials Physics
Volume74
Issue number18
DOIs
Publication statusPublished - 6 Nov 2006

    Fingerprint

Keywords

  • helium 2
  • tracer particles
  • Stokes drag forces

Cite this