Evaluation of the turbulent kinetic dissipation rate in an agitated vessel

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dc.contributor.authorKysela Bohušcs
dc.contributor.authorKonfršt Jiřícs
dc.contributor.authorChára Zdeněkcs
dc.contributor.authorJašíková Darinacs
dc.contributor.authorŠulc Radekcs
dc.date.accessioned2018-09-25T12:13:33Z
dc.date.available2018-09-25T12:13:33Z
dc.date.issued2017cs
dc.description.abstractThe 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-ε 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.en
dc.format.extent6cs
dc.identifier.doi10.1051/epjconf/201714302062
dc.identifier.issn2100-014Xcs
dc.identifier.urihttps://dspace.tul.cz/handle/15240/31120
dc.identifier.urihttps://www.epj-conferences.org/articles/epjconf/abs/2017/12/epjconf_efm2017_02062/epjconf_efm2017_02062.html
dc.language.isoengcs
dc.relation.ispartofseries1cs
dc.subjectagitated vesselcs
dc.subjectmixing processcs
dc.subjectindustrial optimizationcs
dc.titleEvaluation of the turbulent kinetic dissipation rate in an agitated vesselcs
local.identifier.publikace4577
local.identifier.wok407743800064en
local.relation.issue2017cs
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