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[PDF] Top 20 Mixing and axial dispersion in Taylor–Couette flows: the effect of the flow regime

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Mixing and axial dispersion in Taylor–Couette flows: the effect of the flow regime

Mixing and axial dispersion in Taylor–Couette flows: the effect of the flow regime

... solution of KSCN (concentration 64% weight, ρ ¼ 1400 kg m & 3 , μ ¼ ...matches the one of the column wall, was seeded with silver-coated hollow- glass spheres for PIV measurements, whereas ... Voir le document complet

17

Mixing and axial dispersion in Taylor–Couette flows: the effect of the flow regime

Mixing and axial dispersion in Taylor–Couette flows: the effect of the flow regime

... matches the one of the column wall, was seeded with silver-coated hollow- glass spheres for PIV measurements, whereas a fluorescent tracer consisting of Rhodamine WT was injected for the ... Voir le document complet

18

Bubble effect on the structures of weakly turbulent couette taylor flow

Bubble effect on the structures of weakly turbulent couette taylor flow

... considering the volume occupied by the bubbles α multiplied by the drift velocity, there is a ratio of ...0.4 and 0.14 between cavitating homogeneous flow and ventilated ... Voir le document complet

13

Effect of bubble’s arrangement on the viscous torque in bubbly Taylor-Couette flow

Effect of bubble’s arrangement on the viscous torque in bubbly Taylor-Couette flow

... analysis of the bubble dispersion for the first instabilities was first performed by DNS and one way ...13 In this framework, bubbles were considered as passive ...accumulation ... Voir le document complet

35

From passive tracer to bubbles dispersion in Taylor-Couette flows

From passive tracer to bubbles dispersion in Taylor-Couette flows

... because of inertia effects (centripetal migration towards the inner cylinder and towards the core of vortices) and lift ...dynamics in TVF, WVF and MWVF has been ... Voir le document complet

3

Experimental investigation of mixing efficiency in particle‑laden Taylor–Couette flows

Experimental investigation of mixing efficiency in particle‑laden Taylor–Couette flows

... of the 26 possible stable configurations observed when the two cylinders are allowed to ...When the outer cylin- der is at rest, only five regimes are commonly observed for single-phase ... Voir le document complet

14

Experimental investigation of mixing efficiency in particle laden Taylor-Couette flows

Experimental investigation of mixing efficiency in particle laden Taylor-Couette flows

... When the rotation rate, Ω, increases, successive in- stabilities occur (characterized by the formation and oscillation of ...single-phase flow, Andereck et ...composed of ... Voir le document complet

14

Effect of bubble’s arrangement on the viscous torque in bubbly Taylor- Couette flow

Effect of bubble’s arrangement on the viscous torque in bubbly Taylor- Couette flow

... A Taylor-Couette flow can be considered as a valuable configuration to study bubble induced modifications of the viscous ...system and characterizing the viscous drag ... Voir le document complet

46

Numerical simulation of bubble dispersion in turbulent Taylor-Couette flow

Numerical simulation of bubble dispersion in turbulent Taylor-Couette flow

... CONCLUSION The first part of our study has consisted in simulating the Taylor-Couette flow in the Turbulent Taylor Vortex Flow regime, ... Voir le document complet

32

Experimental study of enhanced mixing induced by particles in Taylor–Couette flows

Experimental study of enhanced mixing induced by particles in Taylor–Couette flows

... As the rotation rate increases, the occurrence of wavy motion was shown to enhance mixing noticeably, as a con- sequence of the local velocity field properties ( Akonur ... Voir le document complet

11

Effect of bubble’s arrangement on the viscous torque in bubbly Taylor- Couette flow

Effect of bubble’s arrangement on the viscous torque in bubbly Taylor- Couette flow

... CONCLUSIONS The research developed in this paper explores and studies the interactions between the dispersion of the bubbles, coherent motion and viscous ... Voir le document complet

47

Experimental study of enhanced mixing induced by particles in Taylor–Couette flows

Experimental study of enhanced mixing induced by particles in Taylor–Couette flows

... As the rotation rate increases, the occurrence of wavy motion was shown to enhance mixing noticeably, as a con- sequence of the local velocity field properties ( Akonur ... Voir le document complet

10

Numerical simulation of bubble dispersion in turbulent Taylor-Couette flow

Numerical simulation of bubble dispersion in turbulent Taylor-Couette flow

... (1) Taylor-Couette flow experiences successive hydrodynamic instabilities for increasing ...numbers the flow is purely azimuthal, and can be solved analytically, ... Voir le document complet

31

Preferential accumulation of bubbles in Couette-Taylor flow patterns

Preferential accumulation of bubbles in Couette-Taylor flow patterns

... u and pressure P兲 are discretized on a staggered nonuniform ...scheme and a semi-implicit Crank-Nicolson scheme for the viscous ...terms. The corresponding code has been widely used and ... Voir le document complet

12

Quantitative visualization of swirl and cloud bubbles in Taylor–Couette flow

Quantitative visualization of swirl and cloud bubbles in Taylor–Couette flow

... gravity effect (Chouippe et ...), the bubble arrangement can shift from a toroïdal mode to a spiral ...that the maximum drag reduction is observed during the transition from the ... Voir le document complet

11

Defect-mediated turbulence in bubbly Taylor-Couette flow

Defect-mediated turbulence in bubbly Taylor-Couette flow

... For the mixture of 65% glycerol, and for the Re and Reg ranges of the present study, the flow is a composite patterns flow, composed of wavy ... Voir le document complet

29

Experimental study of bubble-drag interaction in a Taylor-Couette flow

Experimental study of bubble-drag interaction in a Taylor-Couette flow

... bubble dispersion, viscous torque, Taylor vortices Abstract This study is an experimental investigation of the interactions between the bubbles, the coherent motion and ... Voir le document complet

11

Experimental study of bubble-drag interaction in a Taylor-Couette flow

Experimental study of bubble-drag interaction in a Taylor-Couette flow

... bubble dispersion, viscous torque, Taylor vortices Abstract This study is an experimental investigation of the interactions between the bubbles, the coherent motion and ... Voir le document complet

12

Étude expérimentale et numérique du mélange et de la dispersion axiale dans une colonne à effet Taylor-Couette

Étude expérimentale et numérique du mélange et de la dispersion axiale dans une colonne à effet Taylor-Couette

... ABSTRACT Taylor-Couette flows between two concentric cylinders have great poten- tial applications in chemical ...idea in mind. It consists of two concentric cylinders with ... Voir le document complet

204

Effect of microchannel aspect ratio on residence time distributions and the axial dispersion coefficient

Effect of microchannel aspect ratio on residence time distributions and the axial dispersion coefficient

... liquid mixing in a T-micromixer. They found that non-uniform mixing by diffusion (the butterfly effect) originates from the top and bottom microchannel walls and is ... Voir le document complet

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