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Turbulent drag on a low-frequency vibrating grid in superfluid He-4 at very low temperatures

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Turbulent drag on a low-frequency vibrating grid in superfluid He-4 at very low temperatures. / Bradley, D. I.; Fisher, S. N.; Guénault, A.M.; Haley, R. P.; Kumar, Mukesh; Lawson, C. R.; Schanen, Roch; McClintock, P. V. E.; Munday, Lydia; Pickett, G. R.; Poole, Malcolm; Tsepelin, V.; Williams, Paul.

In: Physical review B, Vol. 85, No. 22, 224533, 28.06.2012, p. -.

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@article{acbd522888e24045bad9a96a166b2ea8,
title = "Turbulent drag on a low-frequency vibrating grid in superfluid He-4 at very low temperatures",
abstract = "We present measurements of the dissipative turbulent drag on a vibrating grid in superfluid He-4 over a wide range of (low) frequencies. At high velocities, the dissipative drag is independent of frequency and is approximately the same as that measured in normal liquid He-4. We present measurements on a similar grid in superfluid He-3-B at low temperatures which shows an almost identical turbulent drag coefficient at low frequencies. However, the turbulent drag in He-3-B is substantially higher at higher frequencies. We also present measurements of the inertial drag coefficient for grid turbulence in He-4. The inertial drag coefficient is significantly reduced by turbulence in both superfluid and normal liquid He-4.",
author = "Bradley, {D. I.} and Fisher, {S. N.} and A.M. Gu{\'e}nault and Haley, {R. P.} and Mukesh Kumar and Lawson, {C. R.} and Roch Schanen and McClintock, {P. V. E.} and Lydia Munday and Pickett, {G. R.} and Malcolm Poole and V. Tsepelin and Paul Williams",
note = "{\textcopyright}2012 American Physical Society",
year = "2012",
month = jun,
day = "28",
doi = "10.1103/PhysRevB.85.224533",
language = "English",
volume = "85",
pages = "--",
journal = "Physical Review B: Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "AMER PHYSICAL SOC",
number = "22",

}

RIS

TY - JOUR

T1 - Turbulent drag on a low-frequency vibrating grid in superfluid He-4 at very low temperatures

AU - Bradley, D. I.

AU - Fisher, S. N.

AU - Guénault, A.M.

AU - Haley, R. P.

AU - Kumar, Mukesh

AU - Lawson, C. R.

AU - Schanen, Roch

AU - McClintock, P. V. E.

AU - Munday, Lydia

AU - Pickett, G. R.

AU - Poole, Malcolm

AU - Tsepelin, V.

AU - Williams, Paul

N1 - ©2012 American Physical Society

PY - 2012/6/28

Y1 - 2012/6/28

N2 - We present measurements of the dissipative turbulent drag on a vibrating grid in superfluid He-4 over a wide range of (low) frequencies. At high velocities, the dissipative drag is independent of frequency and is approximately the same as that measured in normal liquid He-4. We present measurements on a similar grid in superfluid He-3-B at low temperatures which shows an almost identical turbulent drag coefficient at low frequencies. However, the turbulent drag in He-3-B is substantially higher at higher frequencies. We also present measurements of the inertial drag coefficient for grid turbulence in He-4. The inertial drag coefficient is significantly reduced by turbulence in both superfluid and normal liquid He-4.

AB - We present measurements of the dissipative turbulent drag on a vibrating grid in superfluid He-4 over a wide range of (low) frequencies. At high velocities, the dissipative drag is independent of frequency and is approximately the same as that measured in normal liquid He-4. We present measurements on a similar grid in superfluid He-3-B at low temperatures which shows an almost identical turbulent drag coefficient at low frequencies. However, the turbulent drag in He-3-B is substantially higher at higher frequencies. We also present measurements of the inertial drag coefficient for grid turbulence in He-4. The inertial drag coefficient is significantly reduced by turbulence in both superfluid and normal liquid He-4.

UR - http://www.scopus.com/inward/record.url?scp=84863336155&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.85.224533

DO - 10.1103/PhysRevB.85.224533

M3 - Journal article

VL - 85

SP - -

JO - Physical Review B: Condensed Matter and Materials Physics

JF - Physical Review B: Condensed Matter and Materials Physics

SN - 1098-0121

IS - 22

M1 - 224533

ER -