Pressure and Velocity Distributions along the Conveying Pipe in Vertical Pneumatic Riser at High Solids Ratio Transport of Powdery Material

Abstract

Pressures, velocities of gas and solid phases and volume fraction of solid phase along the conveying pipe in vertical pneumatic transport of powdery material at high solids ratio are numerically analyzed by considering the compressibility of gas density and assuming an isothermal flow. The result is discussed by comparing with our experimental values. Possible values of initial volume fraction and friction factor of solid phase are limited to a finite region by attaching a condition to the analysis in order to get a realistic solution.