Large-eddy simulation (LES) of the large scale bubble plume

Dhotre, M.T.; Ničeno, Bojan; Smith, Brian L.; Simiano, M.

doi:10.1016/j.ces.2009.02.040

Cited by 52 publications

(35 citation statements)

References 17 publications

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“…Dhotre et al [18] found good agreement with the measurement data at higher elevation, while discrepancies were observed at lower elevation, near the injector. The reason for the discrepancies was attributed to the absence of modelling bubble coalescence and breakup.…”

Section: Dhotre Et Alsupporting

confidence: 68%

“…In their work, the effect of SGS turbulent dispersion force could not be determined as the bubble size was almost equivalent to the mesh size. [18]. Dhotre et al [18] extended LES with E-E approach for a gas-liquid flow in a large-scale bubble plume.…”

Section: Niceno Et Almentioning

confidence: 99%

“…[18]. Dhotre et al [18] extended LES with E-E approach for a gas-liquid flow in a large-scale bubble plume. The predictions at three elevations were compared with the measurement data of Simiano [55] and an RANS prediction.…”

Section: Niceno Et Almentioning

confidence: 99%

See 2 more Smart Citations

Large Eddy Simulation for Dispersed Bubbly Flows: A Review

Dhotre

Deen

Ničeno

et al. 2013

International Journal of Chemical Engineering

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Large eddy simulations (LES) of dispersed gas-liquid flows for the prediction of flow patterns and its applications have been reviewed. The published literature in the last ten years has been analysed on a coherent basis, and the present status has been brought out for the LES Euler-Euler and Euler-Lagrange approaches. Finally, recommendations for the use of LES in dispersed gas liquid flows have been made.

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Section: Dhotre Et Alsupporting

confidence: 68%

Section: Niceno Et Almentioning

confidence: 99%

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Large Eddy Simulation for Dispersed Bubbly Flows: A Review

Dhotre

Deen

Ničeno

et al. 2013

International Journal of Chemical Engineering

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“…Bubbles in a turbulent flow can be subjected to a wide variety of phenomena that may significantly affect the overall dynamics. Bubble breakup and coalescence, bubble oscillation and rotation and other bubble-bubble and bubble-liquid interactions have been explicitly modeled as bubble induced turbulence (Clift et al, 1978;Dhotre et al, 2009;Sato et al, 1981;Tomiyama, 1998). Although there are numerical studies devoted to understanding the physics behind these processes (Esmaeeli and Tryggvason, 1998;Fox, 2012;Kuwagi and Ozoe, 1999), proper parameterization and modeling remains unclear (Sokolichin et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Numerical simulations of turbulent thermal, bubble and hybrid plumes

et al. 2015

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“…The lift coefficient can be integrated either as a non-dimensional constant or through a lift model as a function of the bubble Eötvös and bubble Reynolds number. As lift coefficient is affected by bubble size, this study opt to incorporate lift coefficient using lift model instead of assigning a fixed constant value as it tends to be influenced by bubble size and the proposed constant values varies across literature [40][41]. Tomiyama et al (2002) lift model is implemented to calculate the lift coefficient in this study as shown in (13).…”

Section: Lift Forcementioning

confidence: 99%

Experimental measurement and CFD simulation on the hydrodynamics of an internal-loop airlift reactor

2017

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Abstract. This paper concerns with the experimental measurement and computational fluid dynamics simulation on local hydrodynamics of a gas-liquid internal-loop airlift reactor. The aim of this work is to study the sensitivity of the drag models and the significance of considering the lift force on the predictive accuracy of the simulation. The experimental analysis was carried out using laser Doppler anemometry at three different heights (i.e. Y = 0.20 m, 0.30 m and 0.38 m) across the riser and downcomer at volumetric flow rate of 0.30 m 3 /h to provide validation for the simulation results. A transient three-dimensional gasliquid internal-loop airlift reactor was carried out using FLUENT 16.2 by implementing the two-fluid model approach. The Eulerian-Eulerian multiphase and standard k-İ dispersed turbulence model were employed in this study. Results suggest that the spherical drag model performed poorly and that the drag model governed by Rayleigh-Taylor shows promising accuracy in the prediction of overall mean axial liquid velocity. On the other hand, the consideration of lift model shows slightly improvement in accuracy. These findings may serve as a guidance for future scale-up and design of airlift reactor studies

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Large-eddy simulation (LES) of the large scale bubble plume

Cited by 52 publications

References 17 publications

Large Eddy Simulation for Dispersed Bubbly Flows: A Review

Large Eddy Simulation for Dispersed Bubbly Flows: A Review

Numerical simulations of turbulent thermal, bubble and hybrid plumes

Experimental measurement and CFD simulation on the hydrodynamics of an internal-loop airlift reactor

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