About: Quantum turbulence of bellows-driven 4He superflow: steady state     Goto   Sponge   NotDistinct   Permalink

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  • Quantum turbulence in superfluid 4He is studied by the attenuation of second sound in channels of 7-mm and 10-mm side square cross sections, and 115-mm length. The ends of the channels are plugged by sintered silver superleaks to allow a pure superflow. Flows are generated by mechanically operating a low temperature bellows assembly, as opposed to the helium fountain pump commonly used for previous superflow turbulence studies. The temperature range is 1.35 K < T < 1.95 K. The observed turbulent steady state is characterized by the vortex line density L1/2 = γ(T)(v vc), where v is the mean superflow velocity and vc is the critical velocity for the onset of turbulence. The character of the steady state agrees with the Vinen phenomenological model for thermal counterflow turbulence. The coefficient γ(T) is in fair agreement with previous thermal pure superflow and counterflow experiments.
  • Quantum turbulence in superfluid 4He is studied by the attenuation of second sound in channels of 7-mm and 10-mm side square cross sections, and 115-mm length. The ends of the channels are plugged by sintered silver superleaks to allow a pure superflow. Flows are generated by mechanically operating a low temperature bellows assembly, as opposed to the helium fountain pump commonly used for previous superflow turbulence studies. The temperature range is 1.35 K < T < 1.95 K. The observed turbulent steady state is characterized by the vortex line density L1/2 = γ(T)(v vc), where v is the mean superflow velocity and vc is the critical velocity for the onset of turbulence. The character of the steady state agrees with the Vinen phenomenological model for thermal counterflow turbulence. The coefficient γ(T) is in fair agreement with previous thermal pure superflow and counterflow experiments. (en)
Title
  • Quantum turbulence of bellows-driven 4He superflow: steady state
  • Quantum turbulence of bellows-driven 4He superflow: steady state (en)
skos:prefLabel
  • Quantum turbulence of bellows-driven 4He superflow: steady state
  • Quantum turbulence of bellows-driven 4He superflow: steady state (en)
skos:notation
  • RIV/68378271:_____/12:00390395!RIV13-GA0-68378271
http://linked.open...avai/predkladatel
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GA202/08/0276), Z(AV0Z10100520)
http://linked.open...iv/cisloPeriodika
  • 13
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
  • Babuin, Simone
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 163840
http://linked.open...ai/riv/idVysledku
  • RIV/68378271:_____/12:00390395
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • quantum turbulence; superfluidity; helium 4 (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • US - Spojené státy americké
http://linked.open...ontrolniKodProRIV
  • [19BE0CD51EFD]
http://linked.open...i/riv/nazevZdroje
  • Physical Review. B
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 86
http://linked.open...iv/tvurceVysledku
  • Skrbek, L.
  • Babuin, Simone
  • Rotter, M.
  • Stammeier, M.
  • Varga, E.
http://linked.open...ain/vavai/riv/wos
  • 000309728800007
http://linked.open...n/vavai/riv/zamer
issn
  • 1098-0121
number of pages
http://bibframe.org/vocab/doi
  • 10.1103/PhysRevB.86.134515
is http://linked.open...avai/riv/vysledek of
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