Název: Distribution of the turbulent kinetic dissipation rate in an agitated vessel
Autoři: Kysela, Bohuš ; Sulc, R. ; Konfršt, Jiří ; Chára, Zdeněk ; Fořt, I. ; Ditl, P.
Typ dokumentu: Příspěvky z konference
Konference/Akce: International Congress of Chemical and Process Engineering /22./, Prague (CZ), 20160827
Rok: 2016
Jazyk: eng
Abstrakt: The design of the agitated tanks depends on the proposed operating conditions and processes\nfor that they are used for. Namely dissipation rate of the turbulent kinetic energy is important\nparameter for the scale-up modelling. The dissipation rate is commonly determined as integral\nvalue based on power input of the impeller, but without information about distribution inside\nthe agitated volume. The cumulative distributions of the dissipation rate within an agitated\nvessel are estimated by evaluations of the CFD (Computational Fluid Dynamics) results,\nwhere the data was obtained from RANS (Reynolds Averaged Navier-Stokes equations) and\nLES (Large Eddy Simulations). The simulations were performed for an agitated vessel\nequipped with four baffles and stirred by a standard Rushton turbine (tank diameter 0.3 m,\nimpeller diameter 0.1 m, off-bottom clearance half of tank diameter, impeller speed 200 rpm).\nThe values of the dissipation rate from the LES calculations were approximated by computing\nthe SGS (Sub Grid Scale) dissipation rate.
Klíčová slova: agitated vessel; dissipation rate; kinetic energy
Číslo projektu: GA16-20175S (CEP)
Zdrojový dokument: CHISA 2016 : 22nd international congress of chemical and process engineering : Abstracts

Instituce: Ústav pro hydrodynamiku AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný na vyžádání prostřednictvím repozitáře Akademie věd.
Původní záznam: http://hdl.handle.net/11104/0264741

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-262416


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Věda a výzkum > AV ČR > Ústav pro hydrodynamiku
Konferenční materiály > Příspěvky z konference