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Turbulent flows at cryogenic temperatures: a new frontier

L Skrbek, J J Niemela and R J Donnelly

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Cryogenic helium is of significant value in generating, and studying, the highest possible Reynolds and Rayleigh number flows under controlled laboratory conditions, primarily due to its extremely low value of kinematic viscosity. We consider here critical helium gas and the two liquid phases, helium I and helium II. Such flows are already being generated and studied using suitable cryogenic equipment. We outline the current experiments and existing proposals for future studies that include gaseous and liquid helium I and II.


PACS

67.25.dk Vortices and turbulence

67.10.Hk Quantum effects on the structure and dynamics of non-degenerate fluids

47.27.Jv High-Reynolds-number turbulence

Subjects

Quantum gases, liquids and solids

Fluid dynamics

Dates

Issue 40 (11 October 1999)

Received 22 June 1999, in final form 27 July 1999



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