Journal of Low Temperature Physics

, Volume 150, Issue 3–4, pp 384–393 | Cite as

Preliminary Measurements on Grid Turbulence in Liquid 4He

  • G. G. Ihas
  • G. Labbe
  • S. C. Liu
  • K. J. Thompson
Article

Abstract

A grid has been pulled through a column of liquid helium at speeds as high as 1 m/s and at temperatures as low as 90 mK. A 300 micrometer Ge thermometer with response time of less than 1 ms measured the temperature rise resulting from the decay of the turbulence generated. It is believed that homogeneous, isotropic quantum turbulence was formed, since mesh Reynolds numbers in excess of 100,000 were created. The rates and power spectra of the energy increases detected in the helium after grid-pulls are determined. The results are compared to other quantum and classical results, and to the theory of the Kelvin wave cascade in a viscosity-free fluid.

Keywords

Superfluid 4He Turbulence Kolmogorov Grid 

PACS

47.27.Gs 47.37.+q 67.40.Vs 

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • G. G. Ihas
    • 1
  • G. Labbe
    • 1
  • S. C. Liu
    • 1
  • K. J. Thompson
    • 1
  1. 1.Physics DepartmentUniversity of FloridaGainesvilleUSA

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