Quantum turbulence visualized by particle dynamics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10291606" target="_blank" >RIV/00216208:11320/14:10291606 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1103/PhysRevB.90.014519" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.90.014519</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevB.90.014519" target="_blank" >10.1103/PhysRevB.90.014519</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quantum turbulence visualized by particle dynamics

Popis výsledku v původním jazyce

The Lagrangian dynamics of micrometer-sized solid particles of hydrogen and deuterium is investigated in thermal counterflow of superfluid He-4 at length scales l(exp) straddling about two orders of magnitude across the average distance l between quantized vortices by using the particle tracking velocimetry technique. The normalized probability distribution functions of the particle velocities and accelerations change from the shapes typical of quantum turbulence, characterized by power-law tails, at length scales l(exp) less than or similar to l, to forms similar to those obtained in classical turbulent flows, at l(exp) greater than or similar to l, although the power-law behavior of the acceleration distribution tails is less clear than that observedfor the particle velocities. Moreover, the acceleration distribution follows a nearly log-normal, classical-like shape, at l less than or similar to l(exp) less than or similar to L-int, where L-int denotes the integral length scale, pro

Název v anglickém jazyce

Quantum turbulence visualized by particle dynamics

Popis výsledku anglicky

The Lagrangian dynamics of micrometer-sized solid particles of hydrogen and deuterium is investigated in thermal counterflow of superfluid He-4 at length scales l(exp) straddling about two orders of magnitude across the average distance l between quantized vortices by using the particle tracking velocimetry technique. The normalized probability distribution functions of the particle velocities and accelerations change from the shapes typical of quantum turbulence, characterized by power-law tails, at length scales l(exp) less than or similar to l, to forms similar to those obtained in classical turbulent flows, at l(exp) greater than or similar to l, although the power-law behavior of the acceleration distribution tails is less clear than that observedfor the particle velocities. Moreover, the acceleration distribution follows a nearly log-normal, classical-like shape, at l less than or similar to l(exp) less than or similar to L-int, where L-int denotes the integral length scale, pro

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BK - Mechanika tekutin

OECD FORD obor

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Projekt

<a href="/cs/project/GAP203%2F11%2F0442" target="_blank" >GAP203/11/0442: Vizualizace proudění kapalného helia</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Physical Review B - Condensed Matter and Materials Physics

ISSN

1098-0121

e-ISSN

—

Svazek periodika

90

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

1-7

Kód UT WoS článku

000341310400006

EID výsledku v databázi Scopus

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