A flow source for the study of quantum turbulence in superfluid 4He

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F12%3A00399266" target="_blank" >RIV/68378271:_____/12:00399266 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1051/epjconf/20122502001" target="_blank" >http://dx.doi.org/10.1051/epjconf/20122502001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjconf/20122502001" target="_blank" >10.1051/epjconf/20122502001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

A flow source for the study of quantum turbulence in superfluid 4He

Popis výsledku v původním jazyce

A flow source has been developed to generate turbulent superfluid flows in channels equipped for detection of quantised vortices. The source consists of a motor driven low temperature compressible volume capable of pushing or sucking superfluid He-4 intoa flow channel. Detection is based on the attenuation of second sound caused by the presence of quantised vortex lines in the turbulent flow. In this paper we present the technical details of the apparatus, along with some raw data obtained during the first successful low temperature test. The test has been performed using the source to generate a flow into a channel whose ends have been blocked by superleaks to allow for the inflow and outflow of the superfluid component of helium only. This techniqueenables to determine the a real density of quantised vortex lines in the temperature range 1.3 to 2.1 K, with well controlled flow velocities between 0.01 and 30 cm/s.

Název v anglickém jazyce

A flow source for the study of quantum turbulence in superfluid 4He

Popis výsledku anglicky

A flow source has been developed to generate turbulent superfluid flows in channels equipped for detection of quantised vortices. The source consists of a motor driven low temperature compressible volume capable of pushing or sucking superfluid He-4 intoa flow channel. Detection is based on the attenuation of second sound caused by the presence of quantised vortex lines in the turbulent flow. In this paper we present the technical details of the apparatus, along with some raw data obtained during the first successful low temperature test. The test has been performed using the source to generate a flow into a channel whose ends have been blocked by superleaks to allow for the inflow and outflow of the superfluid component of helium only. This techniqueenables to determine the a real density of quantised vortex lines in the temperature range 1.3 to 2.1 K, with well controlled flow velocities between 0.01 and 30 cm/s.

Druh

D - Stať ve sborníku

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GA202%2F08%2F0276" target="_blank" >GA202/08/0276: Vybrané problémy kryogenní dynamiky tekutin</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

EFM11 ? Experimental Fluid Mechanics 2011

ISBN

—

ISSN

2100-014X

e-ISSN

—

Počet stran výsledku

10

Strana od-do

1-10

Název nakladatele

EDP Sciences

Místo vydání

Les Ulis Cedex A

Místo konání akce

Jicin

Datum konání akce

22. 11. 2011

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000304449600104