TY - JOUR
T1 - Decay of vorticity in homogeneous turbulence
AU - Smith, Michael R.
AU - Donnelly, Russell J.
AU - Goldenfeld, Nigel
AU - Vinen, W. F.
PY - 1993
Y1 - 1993
N2 - We report on observations of turbulent behavior made without requiring the use of Taylor's "frozen turbulence" hypothesis. Initially, a towed grid generates homogeneous turbulence of grid Reynolds number of order 105 within a stationary channel filled with helium II. The subsequent decay in time t of the line density of quantum vortices is measured by second sound attenuation, and the associated rms vorticity ω follows the behavior expected of a classical fluid with ω∼t-3/2, consistent with the notion of a coupled turbulent state of helium II. This technique also yields the time dependence of the Kolmogorov microscale.
AB - We report on observations of turbulent behavior made without requiring the use of Taylor's "frozen turbulence" hypothesis. Initially, a towed grid generates homogeneous turbulence of grid Reynolds number of order 105 within a stationary channel filled with helium II. The subsequent decay in time t of the line density of quantum vortices is measured by second sound attenuation, and the associated rms vorticity ω follows the behavior expected of a classical fluid with ω∼t-3/2, consistent with the notion of a coupled turbulent state of helium II. This technique also yields the time dependence of the Kolmogorov microscale.
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U2 - 10.1103/PhysRevLett.71.2583
DO - 10.1103/PhysRevLett.71.2583
M3 - Article
C2 - 10054718
AN - SCOPUS:12044254057
SN - 0031-9007
VL - 71
SP - 2583
EP - 2586
JO - Physical review letters
JF - Physical review letters
IS - 16
ER -