CFD simulation of bubble column reactors: importance of drag force formulation

Thakre, Shirish; Joshi, Jyeshtharaj B.

doi:10.1016/s0009-2509(99)00232-8

Cited by 67 publications

(27 citation statements)

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“…In the present hydrodynamic model all forces except the virtual mass force has been used. According to Hunt et al [49], the contribution of virtual mass force becomes negligible for column diameter greater that 0.15 m. Thakre and Joshi [50], Deen et al [36] and Sokolichin and Eigenberger [10] have also pointed out the negligible effect of virtual mass force. A brief description of each interfacial force component is presented below.…”

Section: Mathematical Modelmentioning

confidence: 99%

CFD simulation of bubble column—An analysis of interphase forces and turbulence models

Tabib

Roy

Joshi

2008

Chemical Engineering Journal

315

295

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Section: Mathematical Modelmentioning

confidence: 99%

CFD simulation of bubble column—An analysis of interphase forces and turbulence models

Tabib

Roy

Joshi

2008

Chemical Engineering Journal

315

295

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“…In the present hydrodynamic model, all forces (the drag force, lift force, and turbulence dispersion forces) except the virtual mass force have been used. According to Hunt et al [26], the contribution of the virtual mass force becomes negligible for column diameters greater than 0.15 m. Deen [27], Sokolichin et al [28], and Thakre and Joshi [29], have also pointed out the negligible effect of the virtual mass force.…”

Section: Multiphase Flowmentioning

confidence: 99%

Effect of Liquid Velocity on Axial Mixing in Gas‐Liquid Dispersions: A CFD Simulation

Roy

Joshi

2006

Chem Eng & Technol

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A CFD analysis has been carried out to elucidate the characteristic features of axial mixing in gas-liquid dispersed upflow when the flow changes between two extremes: from bubble column, with very low/no liquid velocity, to pipe flow with very high liquid velocity. The CFD model was validated by simulating flow both in multiphase and in single phase. An agreement was observed between the predictions and the experimental data available in the published literature. The validated CFD model has been extended for the simulation of the axial dispersion coefficient for both multiphase and single phase. CFD predictions of the axial dispersion coefficient show good agreement with experimental values published in the literature. A systematic numerical study was done by varying the superficial liquid velocity, from a very low value to a very high value, to understand its effect on axial dispersion.

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“…The above procedure has been used partially or fully by several investigators, for instance, for mixing [15,19,52,53,[59][60][61][62][63], axial mixing [64][65][66][67], heat and mass transfer [68][69][70][71][72][73], gas induction [74][75][76], solid suspension [75,77,78], and enzyme deactivation [79].…”

Section: Introductionmentioning

confidence: 99%

CFD Simulation of Annular Centrifugal Extractors

Vedantam

Wardle

Tamhane

et al. 2012

International Journal of Chemical Engineering

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Annular centrifugal extractors (ACE), also called annular centrifugal contactors offer several advantages over the other conventional process equipment such as low hold-up, high process throughput, low residence time, low solvent inventory and high turn down ratio. The equipment provides a very high value of mass transfer coefficient and interfacial area in the annular zone because of the high level of power consumption per unit volume and separation inside the rotor due to the high g of centrifugal field. For the development of rational and reliable design procedures, it is important to understand the flow patterns in the mixer and settler zones. Computational Fluid Dynamics (CFD) has played a major role in the constant evolution and improvements of this device. During the past thirty years, a large number of investigators have undertaken CFD simulations. All these publications have been carefully and critically analyzed and a coherent picture of the present status has been presented in this review paper. Initially, review of the single phase studies in the annular region has been presented, followed by the separator region. In continuation, the two-phase CFD simulations involving liquid-liquid and gas-liquid flow in the annular as well as separator regions have been reviewed. Suggestions have been made for the future work for bridging the existing knowledge gaps. In particular, emphasis has been given to the application of CFD simulations for the design of this equipment.

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CFD simulation of bubble column reactors: importance of drag force formulation

Cited by 67 publications

References 0 publications

CFD simulation of bubble column—An analysis of interphase forces and turbulence models

CFD simulation of bubble column—An analysis of interphase forces and turbulence models

Effect of Liquid Velocity on Axial Mixing in Gas‐Liquid Dispersions: A CFD Simulation

CFD Simulation of Annular Centrifugal Extractors

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