Flow structure in a three‐dimensional bubble column and three‐phase fluidized bed

Chen, R. C.; Reese, J.; Fan, Liang‐Shih

doi:10.1002/aic.690400702

Cited by 301 publications

(212 citation statements)

References 26 publications

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“…Two flow regimes were observed: the dispersed bubble regime and the coalesced bubble regime. These observations agreed with those of Chen et al (1994). According to the observation of Chen et al (1994), the coalesced bubble regime was further divided into vortical-spiral flow and turbulent flow.…”

Section: Flow Regimessupporting

confidence: 78%

“…These observations agreed with those of Chen et al (1994). According to the observation of Chen et al (1994), the coalesced bubble regime was further divided into vortical-spiral flow and turbulent flow. It was observed that at lower fiber mass fractions (0.1% and 0.25%), there were three flow patterns: dispersed flow, vortical-spiral flow, and turbulent flow.…”

Section: Flow Regimessupporting

confidence: 78%

“…Similar observations were obtained by Tsuchiya and Nakanishi (1992). The negative slope of the plot of Ug/s vs. U g in the homogeneous regime for all aeration plates may be the result of downward liquid flow between bubbles, compensating for the amount of liquid carried by the bubble wake to ensure conservation of mass (Chen et al, 1994). This downward liquid flow has a hindrance effect on the bubble rise velocity, leading to a bubble rise velocity less than the terminal rise velocity.…”

Section: Effect Of Gas Distributor Open Area On Gas Holdupsupporting

confidence: 69%

“…When gross circulation occurred, four flow regions were identified: (i) descending flow, (ii) vortical flow, (iii) fast bubble flow, and (iv) central plume, as shown in Figure 2.3. Chen et al (1994) studied macroscopic flow structures in 3-D gas-liquid and gas-liquidsolid semi-batch bubble columns using particle image velocimetry. The bubble column diameter in this study was 10.2 cm.…”

Section: Flow Regimesmentioning

confidence: 99%

“…These two flow regimes are separated by a transition regime (Zahradnik, et al, 1997;Chen et al, 1994). By using an appropriate gas distributor, the homogeneous and heterogeneous regimes can be obtained in the same facility by simply varying the gas flow rate.…”

Section: Introduction Of Flow Regimes and Gas Holdupmentioning

confidence: 99%

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Gas holdup in a gas-liquid-fiber semi-batch bubble column

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Section: Flow Regimessupporting

confidence: 78%

Section: Flow Regimessupporting

confidence: 78%

Section: Effect Of Gas Distributor Open Area On Gas Holdupsupporting

confidence: 69%

Section: Flow Regimesmentioning

confidence: 99%

Section: Introduction Of Flow Regimes and Gas Holdupmentioning

confidence: 99%

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Gas holdup in a gas-liquid-fiber semi-batch bubble column

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Mean and Turbulent Particle Velocity in the Fully Developed Region of a Three-Phase Fluidized Bed

Kiared

Larachi²,

Chaouki

et al. 1999

Chem. Eng. Technol.

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A thorough experimental description of the time-averaged solids flow in the fully developed region of a cylindrical gas-liquidsolid fluidized bed was provided by using a noninvasive radioactive particle tracking technique (RPT). The 3-D local instantaneous velocity components (radial, axial, azimuthal) of a single radioactive solid tracer, having properties identical to those of the solids in the bed, were measured noninvasively over extended time periods to establish the radial distributions in the fully developed region of axial and radial particle mean and turbulent velocities, shear stress, and axial and radial eddy diffusion coefficients. Glass beads and polyvinyl chloride particles of various shapes and sizes were water-fluidized singly or as binary mixtures in a 100 mm ID Plexiglas column over air and water superficial velocity ranges that spanned the dispersed bubble, coalesced bubble, and transitional flow regimes.

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Bubble Columns

Deen

Mudde

Kuipers

et al. 2010

Ullmann's Encyclopedia of Industrial Chemistry

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The article contains sections titled: 1. Introduction 2. Bubble Columns 2.1. Design and Applications 2.2. Gas Distribution 2.3. Flow Regimes 2.4. Bubble Size 2.5. Bubble Rise Velocity 2.6. Axial Dispersion 2.7. Gas Holdup 2.8. Specific Interfacial Area 2.9. Mass Transfer 2.10. Heat Transfer 2.11. Fluid Dynamics 3. Airlift Loop Reactors 3.1. Design and Applications 3.2. Mixing Behavior and Fluid Dynamics 3.3. Gas Holdup 3.4. Mass Transfer and Mixing 3.5. Heat Transfer 3.6. Computational Fluid Dynamics

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Flow structure in a three‐dimensional bubble column and three‐phase fluidized bed

Cited by 301 publications

References 26 publications

Gas holdup in a gas-liquid-fiber semi-batch bubble column

Gas holdup in a gas-liquid-fiber semi-batch bubble column

Mean and Turbulent Particle Velocity in the Fully Developed Region of a Three-Phase Fluidized Bed

Bubble Columns

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