Numerical study of the mixing efficiency of a ribbon mixer
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Numerical study of the mixing efficiency of a ribbon mixer.

Numerical study of the mixing efficiency of a ribbon mixer ...

Jan 01, 2016  To investigate the mixing efficiency of solid particles in the ribbon mixer, DEM simulations were performed by varying the blade speed and particle number.

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Numerical study of the mixing efficiency of a ribbon mixer ...

Such simulations are important to analyze mixing efficiency but they have not been conducted previously in a ribbon mixer, owing to complex boundary conditions.

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Numerical study of the mixing efficiency of a batch mixer ...

Nov 01, 2016  Numerical study of the mixing efficiency of a ribbon mixer using the discrete element method Powder Technol. , 287 ( 2015 ) , pp. 380 - 394

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Numerical investigation of the mixing efficiency of the ...

Apr 01, 2006  2.2. Mixer configurations. The mixing configuration of the Paravisc ( Fig. 1) consists of a vessel of 346 mm in diameter and a liquid height of 400 mm. The tank is

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Mixing efficiency of a concrete ribbon mixer and DEM ...

The ribbon concrete mixer with double barrels is commonly used to improve the uniformity of the fresh concrete in construction industry. In order to investigate the

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Evaluating the mixing performance of a ribbon blender ...

The numerical results showed that for this kind of ribbon mixer, initial loading was critical for the particle mixing efficiency, and the increase of impeller

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Numerical investigation of the mixing efficiency of the ...

Apr 01, 2006  2.2. Mixer configurations. The mixing configuration of the Paravisc ( Fig. 1) consists of a vessel of 346 mm in diameter and a liquid height of 400 mm. The tank is equipped with a Paravisc impeller with a diameter of 320 mm and a height of 340 mm. The finite element method requires the generation of a computational mesh.

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Numerical study of the mixing efficiency of a batch mixer ...

In this study the simulations of granular flow in a batch mixer with independent double axial mixing are presented. The simulated granular flows were used to analyze the mixing efficiency. Such analysis has not been conducted previously for such a batch mixer, because of the complex mixing conditions.

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Mixing efficiency of a concrete ribbon mixer and DEM ...

The ribbon concrete mixer with double barrels is commonly used to improve the uniformity of the fresh concrete in construction industry. In order to investigate the mixing efficiency of this kind ...

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[PDF] Flow and mixing performance in helical ribbon mixers ...

Abstract This paper explores the effect of impeller design on the chaotic mixing in a helical ribbon mixer. Numerical simulations using the smoothed particle hydrodynamics (SPH) method are used to solve for the fluid flow around the moving impellor. The mixing flow is visualised by extracting the hyperbolic Lagrangian coherent structures (LCS) of the flow from the finite-time Lyapunov exponent ...

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Flow and Mixing Performance in Helical Ribbon Mixers

Helical Ribbon mixer. Delaplace et al. (2000) has compiled a review of the experimental literature for helical ribbon mixers. The mixers were compared using circulation and mixing time. While Delaplace does not give an ideal geometry, a region of the parameter space is defined that results in an acceptable rate of mixing.

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Powder Technology Vol 287, Pages 1-446 (January 2016 ...

Numerical study of the mixing efficiency of a ribbon mixer using the discrete element method. Gytis Basinskas, Mikio Sakai. Pages 380-394. Download PDF. Article preview. select article Synthesis and consolidation behavior of Al/AlN composite powders by reactive RF thermal plasma spraying.

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A Modified Thermal Mixing Efficiency and its Application ...

However, the modified thermal mixing efficiency formula can correctly describe the mixing process between the core and fan flows in the lobed mixer nozzle. In addition, the relationship for mixing between the core and fan flows and the ratio of the lobe height to the lobe width are investigated and the conclusion is drawn in this paper.

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Mixing (process engineering) - Wikipedia

Ribbon Blender Ribbon blenders are very common in process industries for performing dry-mixing operations. The mixing is performed thanks to 2 helix (ribbon) welded on the shafts. Both helix move the product in opposite directions thus achieving the mixing (see picture of ribbon blender). V Blender; Twin-Screw Continuous Blender

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Two dimensional numerical study on mixing enhancement in ...

Oct 01, 2017  In this study, employing a numerical study based on the finite volume method to solve the governing equations, the induced charge electrokinetics is used to enhance the mixing of two fluid streams. To do so, the electric field is applied to polarize the conductive surface (e.g. particle), generating the electroosmotic fluid flow.

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EXPERIMENTAL AND NUMERICAL STUDY OF RHOMBOIDAL

Perfect mixing exists in a continuous stirred tank with constant discharge. A real system always falls between these ideal cases. To measure the efficiency of the real system with respect to a plug flow or a perfect mixer, Bigg [21] proposed a mixing index, β, that relates the two ideal curves and the actual measured curve. For a perfect mixer β

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Numerical study of electro-osmotic micro-mixing of ...

Apr 27, 2019  This paper numerically studies the mixing quality of an electro-osmotic micro-mixer. An electrode array is symmetrically located on the surface of the micro-chamber with an inner cylindrical obstacle. The simulations are performed to obtain an optimal radius for inner cylinder. The effect of AC frequency, voltage value, liquid inlet velocity and angular velocity of inner cylinder is studied ...

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(PDF) An Investigation of the Superblend Mixer Louis ...

Based on mixing efficiency criteria, this study confirms that the co-rotating mode consistently yields the best results in the laminar and early transition regimes. ... the helical ribbon is in the up-pumping mode rations of a dual shaft coaxial mixer (the ribbon pushes the fluid from bottom to top at the periphery). ... “Numerical ...

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Numerical analysis of powder mixing dynamics in a ribbon

understand the mixing process due to its ability to simulate the dynamics of the particles during the process. We present a numerical study on the mixing dynamics of powder in a ribbon mixer. DEM simulations were conducted varying different operating conditions including the level of filling, the

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Numerical investigation of mixing efficiency of helical ...

Apr 01, 1998  Quite clearly, the answer to such questions is nontrivial since the quality of mixing achieved in a vessel depends on various parameters such as the geometry of the mixing equipment, the operating conditions, and the fluid rheology. Viscous mixing with helical ribbons has been the subject of a number of investigations (Brito de la Fuente, 1992).

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Numerical analysis of powder mixing dynamics in a ribbon

understand the mixing process due to its ability to simulate the dynamics of the particles during the process. We present a numerical study on the mixing dynamics of powder in a ribbon mixer. DEM simulations were conducted varying different operating conditions including the level of filling, the

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Powder Technology Vol 287, Pages 1-446 (January 2016 ...

Numerical study of the mixing efficiency of a ribbon mixer using the discrete element method. Gytis Basinskas, Mikio Sakai. Pages 380-394. Download PDF. Article preview. select article Synthesis and consolidation behavior of Al/AlN composite powders by reactive RF thermal plasma spraying.

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NUMERICAL STUDY OF MIXING IN MICROCHANNELS WITH

The mixer performance is tested using particle orbit information. A simple particle-dispersion method is used to estimate the standard deviation (a measure of the deviation of the concentration field from the mean), which allows a characterization of the efficiency of mixing. DEVICE DESCRIPTION We first examine a simple mixer concept in order to

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Numerical Study on Low Reynolds Mixing of T-Shaped

mixing performance of these geometries is studied by numerical study and it was implemented in COMSOL Multiphysics environment. It was clarified that T-shaped micromixer with obstacles and grooved micromixer improved mixing efficiency of the basic design by 37.2% and 43.8%, respectively. Also, it was shown that this increase in

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(PDF) An Investigation of the Superblend Mixer Louis ...

Based on mixing efficiency criteria, this study confirms that the co-rotating mode consistently yields the best results in the laminar and early transition regimes. ... the helical ribbon is in the up-pumping mode rations of a dual shaft coaxial mixer (the ribbon pushes the fluid from bottom to top at the periphery). ... “Numerical ...

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Port Positions on the Mixing Efficiency of a Rotor-Type ...

The purpose of this study was to explore the complex flow structure a novel active-type micromixer that based on concept of Wankle-type rotor. The characteristics of this micromixer are two folds; a rapid mixing of reagents in a limited space due to the generation of multiple vortices and a graduate increment in dynamic pressure as the mixed reagents is delivered to the output ports.

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Numerical and Experimental Study on Jet Trajectories and ...

Oct 21, 2010  Numerical results of an incompressible cross flow-jet mixing in venturi-jet mixers are presented and validated against experimental results. Jet trajectories, concentration decay of tracer jet, spatial unmixedness, and mixing length are computed for

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Fast Mixing in Microchannels by Input Modulation: A ...

In this study, we focused on the numerical modeling of the so-called injection mixer. In these devices, the mixing is driven by the dynamic of the injection streams. Attention is given to the inlet region where the different streams first mix together.

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1)粒子法による複雑現象シミュレーション

solid mixing in an industrial blender,” Chem. Eng. J., 279, 821-839 (2015) [5] G. Basinskas, M. Sakai, “Numerical study of the mixing efficiency of a ribbon mixer using the discrete element method,” Powder Technol., 287, 380-394 (2016)

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酒井幹夫, 東京大学 粉体シミュレーション, 離散要素法

Y. Tsugeno, M. Sakai, S. Yamazaki, T. Nishinomiya, "DEM simulation for optimal design of powder mixing in a ribbon mixer,” Adv. Powder Technol., 32 (2021) 1735-1749. ... "Numerical study of the mixing efficiency of a batch mixer using the discrete element method," Powder Technol., 301

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Mixing Technology, Impellers - Zucchetti Srl

CFD (Computational Fluid Dynamics) is a fundamental and preeminent mixing technology technique that develops a real model of the mixing process on an industrial scale project. This method, with a distinctive employment of numerical analysis and physical models, examines more carefully those processes that are problematic to study with ...

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12th European Conference on Mixing 2006

numerical study on the turbulent reacting flow in the injector region ... methods for the characterization and comparison of mixing efficiency of different confined opposing jets mixing devices ... the blending efficiency of an in termeshing helical ribbon and screw

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High-viscosity liquid mixing in a slug-flow micromixer: a ...

Feb 07, 2020  Mixing of high-viscosity liquids (e.g. glycerol–water solutions) is challenging and costly and often requires employing active mixing methods. Two-phase flow micromixers have attracted attention due to their low cost, simple structure, and high performance. In the present work, we investigate the mixing of similar fluids with viscosities equal to or higher than that of water in a two

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Numerical and experimental study of passive fluids mixing ...

Jul 06, 2017  Das et al. also conducted a numerical simulation to study the influence of channel geometry on mixing performance at low R e. The results showed that 3D serpentine microchannel yielded best mixing efficiency than others whereas the straight channel showed poor mixing performance due to less diffusion time.

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