A low Reynolds number k–ε model for the prediction of flow pattern and pressure drop in bubble column reactors

A low Reynolds number k-e CFD model has been used for the description of flow pattern near the wall. An excellent agreement has been shown between the predicted and experimental hold-up and velocity profiles over a wide range of superficial gas velocity (V G ), column diameter (D), column height (H D ) and the nature of gas-liquid system (bubble diameter and their rise velocity). The CFD model has been extended for the prediction of pressure drop for two-phase gas-liquid flows in bubble columns. A comparison has been presented between the predicted and the experimental data over a wide range of superficial gas and liquid velocities and for three gas-liquid systems.

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