Browsing by Author "Konfršt Jiří"
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- ItemDroplets size evolution of dispersion in a stirred tank(EPJ Web of Conferences, 2018) Kysela Bohuš; Konfršt Jiří; Chára Zdeněk; Šulc Radek; Jašíková Darina
- ItemDroplets size evolution of dispersion in a stirred tank(2017) Kysela Bohuš; Konfršt Jiří; Chára Zdeněk; Šulc Radek; Jašíková Darina
- ItemEstimation of turbulence dissipation rate by Large eddy PIV method in an agitated vessel(EDP Sciences, 2015) Jašíková Darina; Kysela Bohuš; Konfršt Jiří; Šulc Radek
- ItemEvaluation and Accuracy of the Local Velocity Data Measurements in an Agitated Vessel(EDP Sciences, 2014) Chára Zdeněk; Kotek Michal; Kysela Bohuš; Konfršt Jiří
- ItemEvaluation of the turbulent kinetic dissipation rate in an agitated vessel(TUL Liberec, 2016) Kysela Bohuš; Konfršt Jiří; Chára Zdeněk; Šulc Radek; Jašíková Darina
- ItemEvaluation of the turbulent kinetic dissipation rate in an agitated vessel(2017) Kysela Bohuš; Konfršt Jiří; Chára Zdeněk; Jašíková Darina; Šulc RadekThe 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.
- ItemStudy of the Turbulent Flow Structure Around a Standard Rushton Impeller(2014) Kysela Bohuš; Konfršt Jiří; Kotek Michal; Fořt Ivan; Chára Zdeněk