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Bubble Formation and Bubble Rise Velocity in Gas−Liquid Systems: A Review
The formation of gas bubbles and their subsequent rise due to buoyancy are very important fundamental phenomena that contribute significantly to the hydrodynamics in gas−liquid reactors. The rise ofExpand
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CFD simulation of bubble column—An analysis of interphase forces and turbulence models
3D transient CFD simulations of bubble column have been performed for a wide range of superficial gas velocity on an industrially relevant cylindrical column and the CFD predictions have beenExpand
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A circulation cell model for bubble columns
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Computational flow modelling and design of bubble column reactors
Abstract The present design practice of the bubble column reactors is still closer to an art than science because of the complexity of the fluid mechanics. In view of this, there have been continuousExpand
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Role of hydrodynamic shear in the cultivation of animal, plant and microbial cells
The rapid developments in biotechnology have resulted in the identification and use of a large variety of biologically active substances produced from microbial, plant and animal origin. These rangeExpand
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Assessment of standard k–ε, RSM and LES turbulence models in a baffled stirred vessel agitated by various impeller designs
Abstract In the present work, laser-doppler anemometry measurements as well as CFD simulations have been performed for the flow generated by various impellers, namely disc turbine (DT), a variety ofExpand
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Axial mixing in multiphase contactors - a unified correlation
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Regime transition in bubble columns: experimental and predictions
Abstract The present paper examines the effects of sparger design and dispersion height on the regime transition. Experiments were performed in a 0.385 m i.d. bubble column. Twenty-two designs ofExpand
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EFFECT OF SPARGER DESIGN AND HEIGHT TO DIAMETER RATIO ON FRACTIONAL GAS HOLD-UP IN BUBBLE COLUMNS
The combined effect of sparger design and dispersion height on fractional gas hold-up (−ɛG) was investigated in a 0.385 m i.d. bubble column. Perforated plates were used as -spargers. Free areas ofExpand
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Effect of impeller design on the flow pattern and mixing in stirred tanks
The flow pattern and power number in a vessel depend on the impeller blade angle, number of blades, blade width, blade twist, blade thickness, pumping direction and interaction of flow with theExpand
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