Abstract
A gas holdup model is developed for cocurrent air–water–fiber bubble column flows using the drift–flux model. The model coefficients are estimated using a nonlinear least square method and systematically acquired experimental data. The model correlates gas holdup with superficial gas and liquid velocity, and fiber type and mass fraction. The model reproduces most experimental data within ± 10 % error and all but 3 of the 3839 experimental data points within ± 15 % error. It also accurately predicts air–water bubble column gas holdup data; these data were not used in estimating the model coefficients. The physical implications of the model coefficients are also discussed.
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