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Study on Cavern Evolution and Performance of Three Mixers in Agitation of Yield-pseudoplastic Fluids by Songsong Wang; Hong Li; Changyuan Tao; Renlong Liu; Yundong Wang; Zuohua Liu is a Engineering article available to read on EtoBox.

What is Study on Cavern Evolution and Performance of Three Mixers in Agitation of Yield-pseudoplastic Fluids about?

The hydrodynamic performance of three mixers (single shaft central mixer (SSC), single shaft off-centred mixer (SSO), dual shaft off-centred mixer (DSO), was investigated in the mixing of yield-pseudoplastic fluids (xanthan gum solutions) in the laminar regime. To explore and determine the efficiency of three mixers, both numerical and experimental approaches were adopted. The fluid rheology was described by the Herschel-Bulkley rheological model. Computational fluid dynamics was employed to simulate the apparent viscosity distribution, mixing time, and the flow pattern inside the stirred tank. The developed model was validated through experimentally measured torque. The influence mechanism of the rotational speed and fluid rheology on the cavern evolution was explored deeply. The performances of three mixers in this work were compared at the constant power input and fluid rheology with respect to the flow pattern, mixing time, and mixing efficiency. The results verify that the faster the rotating speed, the greater influence of the fluid rheology on the cavern evolution, and the more uniform apparent viscosity distribution. Moreover, the mixing time decreases continuously as the i

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Author

Songsong Wang; Hong Li; Changyuan Tao; Renlong Liu; Yundong Wang; Zuohua Liu

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)