Počet záznamů: 1  

Evaluation of the turbulent kinetic dissipation rate in an agitated vessel

  1. 1.
    0466630 - ÚH 2018 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
    Kysela, Bohuš - Konfršt, Jiří - Chára, Zdeněk - Sulc, R. - Jašíková, D.
    Evaluation of the turbulent kinetic dissipation rate in an agitated vessel.
    EPJ Web of Conferences. Vol. 143. Les Ulis: EDP Sciences, 2017 - (Dančová, P.), č. článku 02062. E-ISSN 2100-014X.
    [Experimental Fluid Mechanics 2016. Mariánské Lázně (CZ), 15.11.2016-18.11.2016]
    Grant CEP: GA ČR GA16-20175S
    Institucionální podpora: RVO:67985874
    Klíčová slova: flow * large-eddy simulation
    Obor OECD: Fluids and plasma physics (including surface physics)
    https://www.epj-conferences.org/articles/epjconf/pdf/2017/12/epjconf_efm2017_02062.pdf

    The design of agitated tanks depends on operating conditions and processes for that are used for. An important parameter for the scale-up modelling is the dissipation rate of the turbulent kinetic energy. The dissipation rate is commonly assumed to be a function of the impeller power input. But this approach gives no information about distribution of the dissipation rate inside the agitated volume. In this paper the distributions of the dissipation rate inside the agitated vessels are estimated by evaluations of the CFD (Computational Fluid Dynamics). The results obtained from RANS (Reynolds Averaged Navier-Stokes equations) k-epsilon turbulent model and LES (Large Eddy Simulations) with Smagorinsky SGS (Sub Grid Scale) model are compared. The agitated vessels with standard geometry equipped with four baffles and stirred by either a standard Rushton turbine or a high shear impeller were investigated. The results are compared with mean dissipation rate estimated from the total impeller power input.
    Trvalý link: http://hdl.handle.net/11104/0276212

     
    Název souboruStaženoVelikostKomentářVerzePřístup
    Kysela, Evaluation of the turbulent kinetic dissipation..., 2017.pdf11.8 MBVydavatelský postprintvyžádat
     
Počet záznamů: 1  

  Tyto stránky využívají soubory cookies, které usnadňují jejich prohlížení. Další informace o tom jak používáme cookies.