An investigation of the influence of initial deformation on fluid dynamics of toluene droplets in water

Engberg, Roland F.; Kenig, Eugeny Y.

doi:10.1016/j.ijmultiphaseflow.2015.06.013

Cited by 12 publications

(4 citation statements)

References 29 publications

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“…The toluene-water system is Newtonian fluid, and the density ρ M and viscosity μ M of the two-phase system can be calculated by ρ M = φρ d + (1 – φ)ρ c and μ M = φμ d +(1 – φ)μ c respectively, where φ is the volume fraction of organic phase. Table lists the detailed physical properties of toluene and water …”

Section: Experimental Methodsmentioning

confidence: 99%

“…where ΔN denotes the number of moles of ethyl chloroacetate reacting with sodium hydroxide and N 0 represents the total number of moles of ethyl chloroacetate brought to the tank. The toluene-water system is Newtonian fluid, and the density ρ M and viscosity μ M of the two-phase system can be calculated by 30 where φ is the volume fraction of organic phase. Table 2 lists the detailed physical properties of toluene and water.…”

Section: Apparatusmentioning

confidence: 99%

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Liquid–Liquid Dispersion and Selectivity of Chemical Reactions in the Inline Teethed High Shear Mixers

Guo

Zhao

et al. 2021

Ind. Eng. Chem. Res.

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The effects of various structural and operating parameters on liquid–liquid dispersion and selectivity of chemical reactions in inline single-row teethed high shear mixers (HSMs) were studied by a parallel competitive reaction system. The product distribution X S was applied to evaluate the mass transfer characteristics. The results show that X S decreases evidently at first in tandem with a slight increase as the rotor speed and flow rate rise. The results also indicate that the structural parameters of the rotors play a more important role in enhancing the mass transfer efficiency at higher rotor speed. Compared with adjusting other structural parameters, increasing the teeth number of the rotor can most significantly decrease both X S and Sauter mean drop size d 32. Computational fluid dynamics was applied to predict the flow and power characteristics. Furthermore, a dimensionless correlation for X S is established to provide references for the design and optimization of inline HSMs in liquid–liquid systems.

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Section: Experimental Methodsmentioning

confidence: 99%

Section: Apparatusmentioning

confidence: 99%

Liquid–Liquid Dispersion and Selectivity of Chemical Reactions in the Inline Teethed High Shear Mixers

Guo

Zhao

et al. 2021

Ind. Eng. Chem. Res.

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“…Furthermore, complicated interactions of the inner flow field with both velocity changes in the outer flow field and interface deformations are possible, which cannot be captured with the present method. For a study where these phenomena are considered, see Engberg and Kenig (2015).…”

Section: Flow Structures In Liquid-liquid Systemsmentioning

confidence: 99%

“…They showed that the secondary internal motion, described by LeClair et al (1972), is only possible because they assume axisymmetry and is nonexistent if simulated with a full three-dimensional method. Engberg and Kenig (2015) numerically investigated the observation made by Wegener et al (2010) that in their experiments, in some cases, two different rise velocities were found for the same drop diameter.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation of different modes of internal circulation in spherical drops: Fluid dynamics and mass/heat transfer

Edelmann¹,

Clercq²,

Noll³

2017

International Journal of Multiphase Flow

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The results of detailed, three-dimensional numerical simulations of fixed spherical drops in a uniform flow are presented. The fluid dynamics outside and inside of the drops as well as the internal problem of mass (or heat) transfer are studied. Liquid drops in both a liquid and a gaseous ambient phase are considered. Special emphasis is put on the investigation of different modes of internal circulation. At low Reynolds numbers of the inner fluid, the flow field inside the drop resembles the well known Hill's vortex solution. However, at higher internal Reynolds numbers, stable steady or quasi-steady alternative modes of internal circulation are found. As these modes are not cylindrical symmetric around the streamwise axis, the often applied assumption of a two-dimensional, axisymmetric flow field is not justified in these cases. Thus, major discrepancies to previous numerical studies are obtained. However, it is shown that experimental results support our findings. For liquid drops surrounded by a liquid, a major influence of the state of internal circulation on the drag is discovered, whereas the drag is nearly unaltered in the case of a liquid drop in gas.

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Introduction

Deng¹,

Wu²,

Liu³

2017

Topology Optimization Theory for Laminar Flow

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An investigation of the influence of initial deformation on fluid dynamics of toluene droplets in water

Cited by 12 publications

References 29 publications

Liquid–Liquid Dispersion and Selectivity of Chemical Reactions in the Inline Teethed High Shear Mixers

Liquid–Liquid Dispersion and Selectivity of Chemical Reactions in the Inline Teethed High Shear Mixers

Numerical investigation of different modes of internal circulation in spherical drops: Fluid dynamics and mass/heat transfer

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