Large eddy simulation of a pitched blade impeller mixed vessel - Comparison with LDA measurements

0466313 - ÚH 2017 RIV GB eng J - Journal Article
Vlček, P. - Kysela, Bohuš - Jirout, T. - Fořt, I.
Large eddy simulation of a pitched blade impeller mixed vessel - Comparison with LDA measurements.
Chemical Engineering Research and Design. Roč. 108, April (2016), s. 42-48. ISSN 0263-8762. E-ISSN 1744-3563.
[15th European Conference on Mixing. St. Petersburg, 28.06.2016-03.07.2016]
Institutional support: RVO:67985874
Keywords : CFD * LES * mixed vessel * pitched six-blade impeller * ensemble averaged mean velocity * flow rate
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.538, year: 2016
http://www.sciencedirect.com/science/article/pii/S0263876216000836

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.
Permanent Link: http://hdl.handle.net/11104/0264643