Motion of micron-size particles in turbulent helium II

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

doi:10.1103/PhysRevB.74.184506

Motion of micron-size particles in turbulent helium II

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

^*Corresponding author for this work

Chemical And Process Engineering

Research output: Contribution to journal › Article › peer-review

38 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 language	English
Article number	184506
Number of pages	5
Journal	Physical Review B: Condensed Matter and Materials Physics
Volume	74
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevB.74.184506
Publication status	Published - 6 Nov 2006

Keywords

helium 2
tracer particles
Stokes drag forces

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10.1103/PhysRevB.74.184506

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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.",

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AU - Barenghi, C. F.

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KW - tracer particles

KW - Stokes drag forces

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Motion of micron-size particles in turbulent helium II

Abstract

Keywords

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