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Název:
Local velocity scaling in T400 vessel agitated by Rushton turbine in a fully turbulent region
Autoři: Šulc, R. ; Ditl, P. ; Fořt, I. ; Jašíková, D. ; Kotek, M. ; Kopecký, V. ; Kysela, Bohuš
Typ dokumentu: Příspěvky z konference
Konference/Akce: Experimental Fluid Mechanics 2016, Mariánské Lázně (CZ), 20161115
Rok: 2017
Jazyk: eng
Abstrakt: 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.
Klíčová slova: agitated vessel; PIV; Rushton turbine
Číslo projektu: GA16-20175S (CEP), LO1201 (CEP)
Poskytovatel projektu: GA ČR, GA MŠk
Zdrojový dokument: EPJ Web of Conferences
Instituce: Ústav pro hydrodynamiku AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na externích webových stránkách.
Externí umístění souboru: https://www.epj-conferences.org/articles/epjconf/pdf/2017/12/epjconf_efm2017_02120.pdf
Původní záznam: http://hdl.handle.net/11104/0276247
Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-367314
Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav pro hydrodynamiku
Konferenční materiály > Příspěvky z konference
Autoři: Šulc, R. ; Ditl, P. ; Fořt, I. ; Jašíková, D. ; Kotek, M. ; Kopecký, V. ; Kysela, Bohuš
Typ dokumentu: Příspěvky z konference
Konference/Akce: Experimental Fluid Mechanics 2016, Mariánské Lázně (CZ), 20161115
Rok: 2017
Jazyk: eng
Abstrakt: 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.
Klíčová slova: agitated vessel; PIV; Rushton turbine
Číslo projektu: GA16-20175S (CEP), LO1201 (CEP)
Poskytovatel projektu: GA ČR, GA MŠk
Zdrojový dokument: EPJ Web of Conferences
Instituce: Ústav pro hydrodynamiku AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na externích webových stránkách.
Externí umístění souboru: https://www.epj-conferences.org/articles/epjconf/pdf/2017/12/epjconf_efm2017_02120.pdf
Původní záznam: http://hdl.handle.net/11104/0276247
Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-367314
Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav pro hydrodynamiku
Konferenční materiály > Příspěvky z konference
Záznam vytvořen dne 2017-10-30, naposledy upraven 2023-12-06.