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Quantum-Classical Ultimate Turbulence Analogies in Heat Transfer

Project goals

The project synergicaly connects theoretical and experimental research into ultimate regimes of transport of heat by turbulent flows of classical and quantum fluids at cryogenic temperatures. The aims are (i) to formulate a unfied model describing the heat trasnfer laws in quantum fluid (superfluid helium-4, in the so-called "quantum counterflow") and in a classical fluid (normal gaseous helium-4 in the Rayleigh-Benard convection), (ii) development of a novel and potentially groundbreaking experimental method of flow field visualisation, using laser-induced fluorescence of long-lived metastable molecular excimers He_2*, suitable for both the classical and quantum flow.

Keywords

turbulenceRayleigh-Benard convection (RBC)laser-induced fluorescenceheat transportQuantum counterflow in He-IIclassical and quantum fluidsOberbeck-Boussinesq approximationsuperfluidityKraichnan ultimate regime of RBCcryogenic helium-4flow visualization

Public support

  • Provider

    Ministry of Education, Youth and Sports

  • Programme

  • Call for proposals

  • Main participants

    Ústav přístrojové techniky AV ČR, v. v. i.

  • Contest type

    OP - EU Operational Programme

  • Contract ID

    18_070/0009944-01

Alternative language

  • Project name in Czech

    Kvantovo-klasické analogie v mezních režimech přenosu tepla turbulentním prouděním

  • Annotation in Czech

    Projekt propojuje teoretický a experimentální výzkum mezních režimů přenosu tepla turbulentním prouděním klasických a kvantových tekutin za nízkých teplot. Cílem je jednak formulace jednotného popisu zákonů přenosu tepla v kvantové kapalině (v supratekutém heliu-4 v procesu tzv. tepelného protiproudu) a v klasické kapalině (normálním plynném heliu-4 v procesu Rayleigh-Bénardovy konvekce), jednak rozvoj nové a potenciálně průlomové experimentální metody vizualizace obou typů proudění.

Scientific branches

  • R&D category

    ZV - Basic research

  • OECD FORD - main branch

    10305 - Fluids and plasma physics (including surface physics)

  • OECD FORD - secondary branch

    10306 - Optics (including laser optics and quantum optics)

  • OECD FORD - another secondary branch

    10302 - Condensed matter physics (including formerly solid state physics, supercond.)

  • BH - Optics, masers and lasers
    BK - Liquid mechanics
    BL - Plasma physics and discharge through gases
    BM - Solid-state physics and magnetism

Completed project evaluation

  • Provider evaluation

    V - Vynikající výsledky projektu (s mezinárodním významem atd.)

  • Project results evaluation

    The project was successfully completed, the planned mobility was successfully implemented. One senior researcher from abroad was supported within the qCULTURA project. The aim of the project was to combine theoretical and experimental research of limit regimes of heat transfer by turbulent flow of classical and quantum fluids at low temperatures. The implementation of the project brought very interesting results, which were published in impact journals and presented at 3 conferences.

Solution timeline

  • Realization period - beginning

    Oct 1, 2018

  • Realization period - end

    Jul 31, 2021

  • Project status

    U - Finished project

  • Latest support payment

    Feb 17, 2020

Data delivery to CEP

  • Confidentiality

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

  • Data delivery code

    CEP22-MSM-EF-U

  • Data delivery date

    Jun 30, 2022

Finance

  • Total approved costs

    4,084 thou. CZK

  • Public financial support

    4,084 thou. CZK

  • Other public sources

    0 thou. CZK

  • Non public and foreign sources

    205 thou. CZK

Basic information

Recognised costs

4 084 CZK thou.

Public support

4 084 CZK thou.

100%


Provider

Ministry of Education, Youth and Sports

OECD FORD

Fluids and plasma physics (including surface physics)

Solution period

01. 10. 2018 - 31. 07. 2021