Particles for tracing turbulent liquid helium

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

doi:10.1007/s00348-007-0444-6

Particles for tracing turbulent liquid helium

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

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

Abstract

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 language	English (US)
Pages (from-to)	887-896
Number of pages	10
Journal	Experiments in Fluids
Volume	44
Issue number	6
DOIs	https://doi.org/10.1007/s00348-007-0444-6
State	Published - Jun 2008

ASJC Scopus subject areas

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

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10.1007/s00348-007-0444-6

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AB - 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.

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Particles for tracing turbulent liquid helium

Abstract

ASJC Scopus subject areas

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