Experimental, Numerical, and Analytical Velocity Spectra in Turbulent Quantum Fluid

Overview

Journal Proc Natl Acad Sci U S A

Specialty Science

Date 2014 Apr 8

PMID 24704875

Citations 6

Authors

Carlo F Barenghi

Victor S Lvov

Philippe-E Roche

Affiliations

Soon will be listed here.

Abstract

Turbulence in superfluid helium is unusual and presents a challenge to fluid dynamicists because it consists of two coupled, interpenetrating turbulent fluids: the first is inviscid with quantized vorticity, and the second is viscous with continuous vorticity. Despite this double nature, the observed spectra of the superfluid turbulent velocity at sufficiently large length scales are similar to those of ordinary turbulence. We present experimental, numerical, and theoretical results that explain these similarities, and illustrate the limits of our present understanding of superfluid turbulence at smaller scales.

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