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
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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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