Strategies for evaluating distributive mixing of multimodal Lagrangian particles with novel bimodal bin count variance

Park, Chanho; Lee, Jiheon; Cho, Hyungtae; Kim, Youngjin; Cho, Sunghyun; Moon, Il

doi:10.1016/j.powtec.2017.11.014

Cited by 5 publications

(3 citation statements)

References 36 publications

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“…For the simulation, the BC (Bird-Carreau) model was used, which claims that the material exhibits the rheological properties of a pseudoplastic fluid at a high shear rate and a Newtonian fluid at a low shear rate [21]. The relationship between shear rate and viscosity can be expressed as follows:…”

Section: Characteristics Of Materials Rheological Parametersmentioning

confidence: 99%

“…For the simulation, the BC (Bird-Carreau) model was used, which claims that the material exhibits the rheological properties of a pseudoplastic fluid at a high shear rate and a Newtonian fluid at a low shear rate [ 21 ]. The relationship between shear rate and viscosity can be expressed as follows:

where η 0 is the viscosity at zero shear rate (Pa·s), η ∞ is the infinite shear viscosity (Pa·s), λ is the rubber viscoelastic characteristic time (s), and n is the Power-law index.…”

Section: Numerical Simulation and Optimization Model Of Mixing Flomentioning

confidence: 99%

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Numerical Optimization Simulation of Synchronous Four-Wing Rotor

et al. 2020

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The mixer is the most widely used batch mixing equipment in the rubber industry. The rotor is a core component and has a great impact on the mixing effect of the equipment. The current rotor structure design is done empirically, being tightly dependent on practical experience. This paper proposes a method for optimizing the rotor structure by using optimization algorithms combined with numerical simulation technology. Using MATLAB software, a parametric design program for synchronous rotors and a set of optimization programs for the particle swarm optimization (PSO) algorithm were written. The global distribution index was used as the fitness function to optimize the synchronous rotor configuration. A comparative analysis of the rotors before and after optimization shows that the optimization process is feasible, and the results are reliable. This provides new ideas for the design and development of mixer rotors.

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Section: Characteristics Of Materials Rheological Parametersmentioning

confidence: 99%

“…For the simulation, the BC (Bird-Carreau) model was used, which claims that the material exhibits the rheological properties of a pseudoplastic fluid at a high shear rate and a Newtonian fluid at a low shear rate [ 21 ]. The relationship between shear rate and viscosity can be expressed as follows:

where η 0 is the viscosity at zero shear rate (Pa·s), η ∞ is the infinite shear viscosity (Pa·s), λ is the rubber viscoelastic characteristic time (s), and n is the Power-law index.…”

Section: Numerical Simulation and Optimization Model Of Mixing Flomentioning

confidence: 99%

Numerical Optimization Simulation of Synchronous Four-Wing Rotor

et al. 2020

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“…The flow streamlines through the last element in the three different geometries are shown in For a better quantitative comparison of the distributive mixing effects [21,22], the coefficient of variation of the particle locations is computed using the radius as the characteristic length:…”

Section: Flow Structurementioning

confidence: 99%

Mixing performance in Split-And-Recombine Milli-Static Mixers—A numerical analysis

Habchi

Ghanem²,

Lemenand

et al. 2019

Chemical Engineering Research and Design

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Very low Reynolds number laminar flow in Split-And-Recombine (SAR) static mixers is numerically investigated by using a finite volume method. In these configurations, advective chaotic flow structures are created by the passive control of the flow, mimicking the baker's transformation, through a series of flow splitting, rotations, and re-combinations that generate intertwined lamellar structures. This process leads to extra surface creation, which ultimately intensifies mass transfer. The main aim of this study is firstly to demonstrate the interest of this technique for enhancing mixing, while keeping pressure drops moderate, and secondly to optimize this type of geometry. For the latter stake, two different SARs, namely SAR1 (Gray's configuration) and SAR2 (Chen's configuration), are compared in terms of distributive and dispersive mixing and energy expenditures evaluated by the pressure drop.

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Development of novel flow distribution apparatus for simulated moving bed to improve degree of mixing

Kim

Park

et al. 2022

Computers & Chemical Engineering

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Strategies for evaluating distributive mixing of multimodal Lagrangian particles with novel bimodal bin count variance

Cited by 5 publications

References 36 publications

Numerical Optimization Simulation of Synchronous Four-Wing Rotor

Numerical Optimization Simulation of Synchronous Four-Wing Rotor

Mixing performance in Split-And-Recombine Milli-Static Mixers—A numerical analysis

Development of novel flow distribution apparatus for simulated moving bed to improve degree of mixing

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