Conservation equations based on the drift flux model for one-dimensional gas-liquid-solid three-phase flow.

The conservation equations based on the drift flux model are derived for one-dimensional gas-liquid-solid three-phase flow. It is clearly shown that the solid particles added to gas-liquid two-phase flow make the flow situation more complex. Their effects on the three-phase flow situation are expressed in terms of the drift velocities of the solid in the gas and the liquid phase.