Relation between segregation patterns and granular flow modes in conical rotating drum

Yada, Hirotaka; Kawaguchi, Toshihiro; Tanaka, Toshitsugu

doi:10.1016/j.flowmeasinst.2009.12.007

Cited by 8 publications

(6 citation statements)

References 22 publications

(25 reference statements)

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“…Most of these flow regimes have been studied (Boateng and Barr, 1997;Ding et al, 2001;Chou et al, 2010;Yada et al, 2010;Huang et al, 2012;Chou and Hsiau, 2012;Demagh et al, 2012;Santos et al, 2013;Dubé et al, 2013;Lee et al, 2013), although there are a restricted number of works dedicated to the transition phenomenon between the regimes (Henein et al, 1983a,b;Watanabe, 1999;Mellmann, 2001;Santomaso et al, 2003;Juarez et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Transition Phenomenon Investigation Between Different Flow Regimes in a Rotary Drum

Santos

Scatena

Duarte

et al. 2016

Braz. J. Chem. Eng.

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-Rotary drums can show different granular flow regimes each one with its own specific flow behavior, which increase the complexity in their study. The way particles move inside the rotary drum is directly related to the mass and energy transfer rates, and consequently to the process performance. Thus, an experimental investigation regarding the transition between different flow regimes inside a rotary drum was carried out in the present work. To the best of our knowledge, the hysteresis phenomenon was observed for the first time in the transition between cataracting-centrifuging regimes, which was shown to be dependent on the physical properties of the particles such as sphericity, density and particle-wall friction coefficient. A new expression for the centrifuging critical rotation speed was proposed in this work.

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Section: Introductionmentioning

confidence: 99%

Transition Phenomenon Investigation Between Different Flow Regimes in a Rotary Drum

Santos

Scatena

Duarte

et al. 2016

Braz. J. Chem. Eng.

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“…Motivated by the results of [5,6] -where axial segregation of binary mixtures in a tapered rotating drum is reported albeit not explained -and how they relate to our own results [7] -where the shape of the rotating drum is used to speed up and control the axial segregation -we study the segregation pattern in tapered rotating drums by means of simulations, and see to what extent it is possible to control it by modifying the drum's shape.…”

mentioning

confidence: 91%

Granular Segregation in Tapered Rotating Drums

González¹,

Orefice²

2015

Preprint

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We study the granular segregation in a tapered rotating drum by means of simulations. In this geometry, both radial and axial segregation appear, the strength of which depends on the filling fraction. We study the effect of the drum's tapering angle on the segregation speed and show that, coherently with several recent studies, the axial segregation is due to the combined effect of the radial segregation and the shape of the drum. We show that the axial segregation behaves in a way analogous to the one found in chute flows, and corresponds to previous theories for shallow gravity driven surface flows with diffusion. By means of this analogy, we show that tapered drums could be the simplest experimental set-up to obtain the free parameters of the theory.

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Section: Introductionmentioning

confidence: 99%

“…The dynamic behaviours of granular motion inside various containers under diverse conditions have been reported [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. This topic has been gaining extensive interest among scientists and engineers, who have conducted theoretical [2,3], experimental [4][5][6][7][8][9] and simulation studies [10][11][12][13][14][15][16]. In this paper, we do not directly discuss the dynamic motion of granules inside a container; we instead emphasize another, much less studied, case of the rolling dynamics of a container filled with granules.…”

Section: Introductionmentioning

confidence: 99%