Two-Phase flow characterization of a rotating packed bed through CFD simulation in OpenFOAM

Rabiee, Roshanak; Monzavi, Mohammad; Shabanian, Jaber; Shams, Alireza; Golshan, Shahab; Jafari, Rouzbeh; Blais, Bruno; Chaouki, Jamal

doi:10.1016/j.ces.2022.117589

Cited by 12 publications

(4 citation statements)

References 35 publications

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“…The consequence is a highly time-consuming simulation if applied to a gas–liquid mixture in a bubbly flow rotating at a high velocity for which phase interaction is high. − In contrast, the Eulerian–Eulerian two-fluid model has the potential to reduce the required simulation time as a more coarse grid, and a higher simulation time step can be used. It has already been confirmed that the Eulerian–Eulerian two-fluid model is a powerful tool to predict the hydrodynamics of gas–liquid mixtures rotating in reactors such as RPBs ,, and GLVUs . Therefore, the Eulerian–Eulerian two-fluid model is applied to the numerical simulations in the present work.…”

Section: Numerical Modelmentioning

confidence: 69%

Design and Optimization of Gas–Liquid Vortex Unit Using Computational Fluid Dynamics (CFD) Simulation

Chen,

Malego,

Van Geem

et al. 2023

Ind. Eng. Chem. Res.

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Due to the exceptional multiphase mixing and mass transfer performance, gas–liquid vortex units (GLVUs) have great potential for solvent-based applications such as CO2 capture. The high gas flow rates needed to provide the energy input for creating the centrifugal field negatively influence the contact between phases and the efficiency of the GLVU. To address this issue, computational fluid dynamics (CFD) simulations are used to optimize the design of the GLVU geometry and its operating conditions. The gas–liquid flow characteristics, contact time, and total energy consumption in different GLVU geometries are analyzed. The effects of geometrical changes including reactor shape, reactor volume, and gas–liquid inlet configuration are investigated. In the optimized GLVU designs, the gas–liquid contact time is increased by more than a factor of 3, while the energy consumption is reduced by 85%, compared to the base case. Structural optimization of a GLVU is an effective route to improve the gas–liquid contact time. The use of CFD significantly accelerates the optimization of the design of a GLVU geometry for subsequent manufacturing.

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Section: Numerical Modelmentioning

confidence: 69%

Design and Optimization of Gas–Liquid Vortex Unit Using Computational Fluid Dynamics (CFD) Simulation

Chen,

Malego,

Van Geem

et al. 2023

Ind. Eng. Chem. Res.

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“…Therefore, some studies have focused on the hydrodynamics characteristics of the liquid flow driven by the rotating wire mesh to understand the mass transfer intensified mechanism 22–24 . A single‐layer wire mesh was usually adopted to eliminate the superimposed effect so that the liquid distribution after the impact can be clearly identified.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of liquid dispersion in a rotating packed bed with single‐layer wire mesh

et al. 2023

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The improvement of liquid dispersion by rotating wire mesh is one of the major causes for the mass transfer and micromixing intensification in rotating packed beds (RPBs). In particular, the initial dispersion region has been proved to have the greatest mass transfer and micromixing efficiency. However, the dispersion mechanism has not been revealed. This study investigated the dynamics of liquid dispersion in an RPB with single-layer wire mesh. The liquid dispersion behaviors were obtained by high-speed photography and numerical simulation. The liquid was found to stretch into ligaments and break into the main droplet and several satellite droplets. A new theoretical model was established to reveal the dispersion mechanism of these two stages. The stretching stage depends on the liquid initial momentum and acquired impulse, while the breakup stage was determined by the competition of ligaments recoil and pinch-off behaviors. The model was validated in good agreement with the experimental and simulation results of the dispersion characteristics.

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“…Currently, the majority of CFD models on RPBs have been developed using the commercial software Ansys Fluent. In addition, Rabiee R et al [24] also firstly developed a model to characterize the gas-liquid flow behavior of RPBs with the aid of…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional gas-liquid flow simulation of a rotating packed bed using Eulerian porous media models

Han,

Yan,

et al. 2023

Preprint

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The rotating packed bed (RPB) is a typical equipment in chemical process intensification technology due to its excellent mass transfer performance. In this paper，three different single-phase wire screen packing pressure drop models coupled with the interfacial area model were used to construct resistance calculation methods for porous media, respectively. The results show that simulation deviations of the liquid holdup and the pressure drop of the m-K model range from 0.92% to 27.61% and 1.63% to 34.59%, respectively. The m-K model has the highest prediction accuracy at N=500~1500 rpm. At N=2000~2500 rpm, the B model has the highest prediction accuracy. The higher the viscosity of the liquid, the more uniform the axial liquid distribution in the packing, and the longer the liquid mean residence time. The impact of different nozzle designs on liquid distribution has been investigated using a new method based on user-defined functions (UDFs).

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Two-Phase flow characterization of a rotating packed bed through CFD simulation in OpenFOAM

Cited by 12 publications

References 35 publications

Design and Optimization of Gas–Liquid Vortex Unit Using Computational Fluid Dynamics (CFD) Simulation

Design and Optimization of Gas–Liquid Vortex Unit Using Computational Fluid Dynamics (CFD) Simulation

Dynamics of liquid dispersion in a rotating packed bed with single‐layer wire mesh

Three-dimensional gas-liquid flow simulation of a rotating packed bed using Eulerian porous media models

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