Virtual mass coefficient bubble columns

Various model parameters involved in the derivation of the stability criterion need to be specified in order to use the stability criterion for quantitative predictions. Model parameters essential for this purpose include the slip velocity, the virtual mass coefficient, and the dispersion coefficient. The procedure for estimation of these parameters is given for gas-solid (and solid-liquid) fluidized beds and bubble columns. 

Fig. 25. Effect of virtual mass coefficient on transition gas hold-up bubble columns [a = 0.5, m = 1.9, dB-VBoo Clift et al relation].

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