Trailing vortices of Rushton turbine : PIV measurements and CFD simulations with snapshot approach

Understanding fluid dynamic characteristics of trailing vortices behind impeller blades and the capability to computationally simulate these vortices is essential for reliable design and scale-up of stirred reactors. In this paper, trailing vortices behind the blades of a standard Rushton turbine we...

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Bibliographic Details
Published in:Chemical engineering research & design 2001, Vol.79 (1), p.3-12
Main Authors: RANADE, V. V, PERRARD, M, LE SAUZE, N, XUEREB, C, BERTRAND, J
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Mixing
Online Access:Get full text
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Summary:Understanding fluid dynamic characteristics of trailing vortices behind impeller blades and the capability to computationally simulate these vortices is essential for reliable design and scale-up of stirred reactors. In this paper, trailing vortices behind the blades of a standard Rushton turbine were studied using particle image velocimetry (PIV). A computational snapshot approach was used to simulate the flow generated by the turbine in baffled stirred vessels. The approach was implemented using the commercial CFD code FLUENT. 2 turbulence models were used for simulating the flow in the vessel. Predicted results were compared with the angle resolved PIV measurements to examine whether the computational model captures the flow structures around the impeller blades and the results discussed. (Original abstract - amended)
ISSN:0263-8762
DOI:10.1205/026387601528471