Flow pattern, bubble size distribution, and gas holdup are investigated in the bubblecolumns. Simulated results by the standard k-epsilon turbulence model together with Grace drag model in the commercial computationa...
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Flow pattern, bubble size distribution, and gas holdup are investigated in the bubblecolumns. Simulated results by the standard k-epsilon turbulence model together with Grace drag model in the commercial computational fluiddynamics software platform (ANSYS CFX 10.0) show good agreement with experimental measurement within the 2d and3dcolumns. Three flow regimes (homogeneous bubbly, transitional, and turbulent flows) are identified by the instantaneous velocity profiles of gas and liquid phases, and general flow patterns are summarized under different superficial gas velocities. The findings are useful for designing the slurry bubblecolumns for synthesizing liquid hydrocarbons and alcohols.
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