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Large eddy simulation of a pitched blade impeller mixed vessel - Comparison with LDA measurements
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SYSNO ASEP 0466313 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Large eddy simulation of a pitched blade impeller mixed vessel - Comparison with LDA measurements Author(s) Vlček, P. (CZ)
Kysela, Bohuš (UH-J) SAI, ORCID, RID
Jirout, T. (CZ)
Fořt, I. (CZ)Source Title Chemical Engineering Research and Design. - : Elsevier - ISSN 0263-8762
Roč. 108, April (2016), s. 42-48Number of pages 7 s. Publication form Print - P Action 15th European Conference on Mixing Event date 28.06.2016 - 03.07.2016 VEvent location St. Petersburg Country RU - Russian Federation Event type EUR Language eng - English Country GB - United Kingdom Keywords CFD ; LES ; mixed vessel ; pitched six-blade impeller ; ensemble averaged mean velocity ; flow rate Subject RIV BK - Fluid Dynamics OECD category Fluids and plasma physics (including surface physics) Institutional support UH-J - RVO:67985874 UT WOS 000376704800006 EID SCOPUS 84973164121 DOI https://doi.org/10.1016/j.cherd.2016.02.020 Annotation This study deals with a large eddy simulation (LES) of the single-phase turbulent flow in a fully baffled mixed vessel stirred by a pitched six-blade impeller. The ANSYS FLUENT 15.7 commercial CFD programme was employed. The LES turbulent model is used with the dynamic Smagorinsky-Lilly model. The Werner-Wengle wall function is used to cope with the requirements of near the wall cell size of the LES model. The sliding mesh (SM) model was used for simulating the impeller movement. The results of the simulations are compared with experimental data obtained by previous LDA measurements of the radial profiles of the axial component of the ensemble averaged mean velocity in the impeller discharge flow. The volume flow rates and the flow rate criteria were calculated from these velocity profiles, and were compared with the flow rates determined from the horizontal vessel cross section from simulation. (C) 2016 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved. Workplace Institute of Hydrodynamics Contact Soňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003 Year of Publishing 2017
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