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Local turbulent energy dissipation rate in an agitated vessel: New approach to dimensionless definition

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00312009" target="_blank" >RIV/68407700:21220/17:00312009 - isvavai.cz</a>

  • Result on the web

    <a href="http://dx.doi.org/10.1134/S0040579517020105" target="_blank" >http://dx.doi.org/10.1134/S0040579517020105</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1134/S0040579517020105" target="_blank" >10.1134/S0040579517020105</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Local turbulent energy dissipation rate in an agitated vessel: New approach to dimensionless definition

  • Original language description

    Using theory of turbulence, particularly using turbulence spectrum analysis, the relations epsilon(*) = epsilon/(u(4)/nu) = const., v(K)/u = const. and Lambda/eta(K) = const. were derived. Assuming that u proportional to(Nd) from this it follows that the widely used dimensionless local turbulent energy dissipation rate defined as epsilon/((N-3 d(2)) is directly proportional to impeller Reynolds number, i.e. epsilon/((N-3 d(2)) proportional to Re, and length scale ratio Lambda/d is indirectly proportional to impeller Reynolds number, i.e. Lambda/d proportional to Re-1, in an agitated vessel at high Reynolds number. The relations obtained by turbulence spectrum analysis were used for estimation of local turbulent energy dissipation rates experimentally measured by Stahl Wernersson and Tragardh (1998, 1999) covering the range of Re = 87600-910200 and own experimental data covering the range of Re = 50000-189000. The experiments have been performed in tanks of 300 mm and 400 mm in the inner diameter for three different viscosities and for various impeller rotational speeds.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    20301 - Mechanical engineering

Result continuities

  • Project

    <a href="/en/project/GA16-20175S" target="_blank" >GA16-20175S: Local turbulent energy dissipation rate in dispersion systems</a><br>

  • Continuities

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

Others

  • Publication year

    2017

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Theoretical Foundations of Chemical Engineering

  • ISSN

    0040-5795

  • e-ISSN

    1608-3431

  • Volume of the periodical

    51

  • Issue of the periodical within the volume

    2

  • Country of publishing house

    RU - RUSSIAN FEDERATION

  • Number of pages

    16

  • Pages from-to

    159-174

  • UT code for WoS article

    000399957500005

  • EID of the result in the Scopus database

    2-s2.0-85018591111