Introduction

There are many solid–liquid mixed transportation needs in energy, environmental protection, petrochemical, mining, and metallurgy, etc. In the process of solid–liquid two-phase mixed transportation, it is easy to cause wall wear, which leads to poor reliability. At the same time, the existence of solid particles will reduce transport efficiency and performance of the pump. However, due to the different parameters such as the size, density, and concentration of solids, the complex geometry of the flow channel in the solid–liquid multiphase pump, and the high-speed rotation of the impeller, it is very difficult to study the mechanism of solid–liquid two-phase flow. At present, researchers have carried out some computational and experimental studies on the solid–liquid multiphase pump. The research status of two-phase model, two-phase hydraulic performance and wear performance of centrifugal pump are described in this chapter.