Analysis of a model of a cocurrent packed-bed column with periodic inlet conditions

We consider a model of a process in a cocurrent packed-bed column with the simplest kinetics of the rate of liquid holdup formation. Under study is the dependence of it on the time-periodic velocities of the liquid and gas flows in a neighborhood of the stationary values of these velocities. The principal terms of the asymptotics in time are found for the liquid holdup and the flow velocities. We detect the growth of the amplitudes of the sinusoidal oscillations of the liquid holdup and the liquid and gas velocities with respect to the column length. The constructed model is used for design of the cocurrent two-phase columns.