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2015 | 36 | 2 | 135-149
Article title

Local Turbulent Energy Dissipation Rate in a Vessel Agitated by a Rushton Turbine

Content
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Languages of publication
EN
Abstracts
EN
The scaling of turbulence characteristics such as turbulent fluctuation velocity, turbulent kinetic energy and turbulent energy dissipation rate was investigated in a mechanically agitated vessel 300 mm in inner diameter stirred by a Rushton turbine at high Reynolds numbers in the range 50 000 < Re < 100 000. The hydrodynamics and flow field was measured using 2-D TR PIV. The convective velocity formulas proposed by Antonia et al. (1980) and Van Doorn (1981) were tested. The turbulent energy dissipation rate estimated independently in both radial and axial directions using the one-dimensional approach was not found to be the same in each direction. Using the proposed correction, the values in both directions were found to be close to each other. The relation ε/(N3·D2) ∞ const. was not conclusively confirmed.
Publisher

Year
Volume
36
Issue
2
Pages
135-149
Physical description
Dates
published
1 - 6 - 2015
online
17 - 7 - 2015
revised
18 - 2 - 2015
received
22 - 11 - 2014
accepted
24 - 4 - 2015
Contributors
author
  • Czech Technical University in Prague, Faculty of Mechanical Engineering, Department of Process Engineering, Technická 4, 166 07 Prague, Czech Republic, Radek.Sulc@fs.cvut.cz
author
  • Czech Technical University in Prague, Faculty of Mechanical Engineering, Department of Process Engineering, Technická 4, 166 07 Prague, Czech Republic
author
  • Czech Technical University in Prague, Faculty of Mechanical Engineering, Department of Process Engineering, Technická 4, 166 07 Prague, Czech Republic
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_1515_cpe-2015-0011
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