Effect of Particle Motion in Isolated Mixing Regions on Mixing in Stirred Vessel

Alatengtuya,; Nishioka, Nami; Horie, Takafumi; Noui‐Mehidi, Mohamed N.; Ohmura, Naoto

doi:10.1252/jcej.09we087

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Firstly, clustering particles can easily eliminate isolated mixing regions, which are an obstacle for global mixing in a stirred vessel [15,16]. The advantage of this method is simpler and less reliant on energy input, because shorter mixing time can be obtained at very low Reynolds number even without inserting bales.…”

Section: Discussionmentioning

confidence: 99%

Dynamical Particle Motions in Vortex Flows

Wang¹,

Ohmura²

2017

Vortex Dynamics and Optical Vortices

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Circular vortex lows generate interesting self-organizing phenomena of particle motions, that is, particle clustering and classiication phenomena. These phenomena result from interaction between vortex dynamics and relaxation of particle velocity due to drag. This chapter introduces particle clustering in stirred vessels and particle classiication in Taylor vortex low based on our previous research works. The irst part of this chapter demonstrates and explains a third category of solid-liquid separation physics whereby particles spontaneously localize or cluster into small regions of luids by taking the clustering phenomena in stirred vessels as an example. The second part of this chapter discusses particle classiication phenomena due to shear-induced migration. Finally, this chapter discusses about process intensiication utilizing these self-organizing phenomena of particle motions in vortex lows.

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Section: Discussionmentioning

confidence: 99%

Dynamical Particle Motions in Vortex Flows

Wang¹,

Ohmura²

2017

Vortex Dynamics and Optical Vortices

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Effects of mixing on the result of anaerobic digestion: Review

Lindmark

Thorin

Fdhila

et al. 2014

Renewable and Sustainable Energy Reviews

230

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Effect of Temperature Change on Geometric Structure of Isolated Mixing Regions in Stirred Vessel

Shahirudin

Alatengtuya

Kumagai

et al. 2012

International Journal of Chemical Engineering

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The present work experimentally investigated the effect of temperature change on the geometric structure of isolated mixing regions (IMRs) in a stirred vessel by the decolorization of fluorescent green dye by acid-base neutralization. A four-bladed Rushton turbine was installed in an unbaffled stirred vessel filled with glycerin as a working fluid. The temperature of working fluid was changed in a stepwise manner from 30°C to a certain fixed value by changing the temperature of the water jacket that the vessel was equipped with. The step temperature change can dramatically reduce the elimination time of IMRs, as compared with a steady temperature operation. During the transient process from an initial state to disappearance of IMR, the IMR showed interesting three-dimensional geometrical changes, that are, simple torus with single filament, simple torus without filaments, a combination of crescent shape and circular tori, and doubly entangled torus.

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Effect of Particle Motion in Isolated Mixing Regions on Mixing in Stirred Vessel

Cited by 3 publications

References 7 publications

Dynamical Particle Motions in Vortex Flows

Dynamical Particle Motions in Vortex Flows

Effects of mixing on the result of anaerobic digestion: Review

Effect of Temperature Change on Geometric Structure of Isolated Mixing Regions in Stirred Vessel

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