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Original title:
Local velocity scaling in T400 vessel agitated by Rushton turbine in a fully turbulent region
Authors: Šulc, R. ; Ditl, P. ; Fořt, I. ; Jašíková, D. ; Kotek, M. ; Kopecký, V. ; Kysela, Bohuš
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2016, Mariánské Lázně (CZ), 20161115
Year: 2017
Language: eng
Abstract: The hydrodynamics and flow field were measured in an agitated vessel using 2-D Time Resolved Particle Image Velocimetry (2-D TR PIV). The experiments were carried out in a fully baffled cylindrical flat bottom vessel 400 mm in inner diameter agitated by a Rushton turbine 133 mm in diameter. The velocity fields were measured in the zone in upward flow to the impeller for impeller rotation speeds from 300 rpm to 850 rpm and three liquids of different viscosities (i.e. (i) distilled water, ii) a 28% vol. aqueous solution of glycol, and iii) a 43% vol. aqueous solution of glycol), corresponding to the impeller Reynolds number in the range 50 000 < Re < 189 000. This Re range secures the fully-developed turbulent flow of agitated liquid. In accordance with the theory of mixing, the dimensionless mean and fluctuation velocities in the measured directions were found to be constant and independent of the impeller Reynolds number. On the basis of the test results the spatial distributions of dimensionless velocities were calculated. The axial turbulence intensity was found to be in the majority in the range from 0.388 to 0.540, which corresponds to the high level of turbulence intensity.
Keywords: agitated vessel; PIV; Rushton turbine
Project no.: GA16-20175S (CEP), LO1201 (CEP)
Funding provider: GA ČR, GA MŠk
Host item entry: EPJ Web of Conferences
Institution: Institute of Hydrodynamics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: https://www.epj-conferences.org/articles/epjconf/pdf/2017/12/epjconf_efm2017_02120.pdf
Original record: http://hdl.handle.net/11104/0276247
Permalink: http://www.nusl.cz/ntk/nusl-367314
The record appears in these collections:
Research > Institutes ASCR > Institute of Hydrodynamics
Conference materials > Papers
Authors: Šulc, R. ; Ditl, P. ; Fořt, I. ; Jašíková, D. ; Kotek, M. ; Kopecký, V. ; Kysela, Bohuš
Document type: Papers
Conference/Event: Experimental Fluid Mechanics 2016, Mariánské Lázně (CZ), 20161115
Year: 2017
Language: eng
Abstract: The hydrodynamics and flow field were measured in an agitated vessel using 2-D Time Resolved Particle Image Velocimetry (2-D TR PIV). The experiments were carried out in a fully baffled cylindrical flat bottom vessel 400 mm in inner diameter agitated by a Rushton turbine 133 mm in diameter. The velocity fields were measured in the zone in upward flow to the impeller for impeller rotation speeds from 300 rpm to 850 rpm and three liquids of different viscosities (i.e. (i) distilled water, ii) a 28% vol. aqueous solution of glycol, and iii) a 43% vol. aqueous solution of glycol), corresponding to the impeller Reynolds number in the range 50 000 < Re < 189 000. This Re range secures the fully-developed turbulent flow of agitated liquid. In accordance with the theory of mixing, the dimensionless mean and fluctuation velocities in the measured directions were found to be constant and independent of the impeller Reynolds number. On the basis of the test results the spatial distributions of dimensionless velocities were calculated. The axial turbulence intensity was found to be in the majority in the range from 0.388 to 0.540, which corresponds to the high level of turbulence intensity.
Keywords: agitated vessel; PIV; Rushton turbine
Project no.: GA16-20175S (CEP), LO1201 (CEP)
Funding provider: GA ČR, GA MŠk
Host item entry: EPJ Web of Conferences
Institution: Institute of Hydrodynamics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: https://www.epj-conferences.org/articles/epjconf/pdf/2017/12/epjconf_efm2017_02120.pdf
Original record: http://hdl.handle.net/11104/0276247
Permalink: http://www.nusl.cz/ntk/nusl-367314
The record appears in these collections:
Research > Institutes ASCR > Institute of Hydrodynamics
Conference materials > Papers
Record created 2017-10-30, last modified 2023-12-06