抄録
For a plug transportation in gas-solid two-phase flow, the prediction equations on particle velocity in a plug and pressure drop in a vertical pipe were formulated by considering fluidized particles. These equations well predicted the experimental data obtained with various solid-air mass flow rates, pipe diameters, and types of particles with the error within around 10%.
In order to confirm the validity of the suppositions introduced in deriving these equations, the particle velocity distributions within a plug in the axial and transversial directions of flow were analyzed by a high speed camera and PIV. As a result, there was very little distribution in particle velocity in a plug, indicating that the particles in a plug are fixed relative to each other and therefore they all move with the same velocity.
