Research on liquid-solid numerical simulation of annular jet pump

In order to investigate the flow characteristics of liquid-solid two-phase flow in an annular jet pump, computational fluid dynamics (CFD) was applied to simulate the internal flow field of a jet pump with sand flow. The three-dimensional flow field of solid particles transported by an annular jet pump was numerically simulated using RNAS and Euler two-phase flow models. The effects of sand particle concentration, solid particle diameter, and flow rate ratio parameters on the flow field and characteristics of the jet pump were analyzed. The findings indicate that during solid particle transportation, the jet pump exhibits asymmetry in the flow field due to gravity. Moreover, an increase in solid particle concentration or diameter exacerbates this asymmetry. Additionally, increasing the particle diameter suggests that a lower flow rate ratio can enhance the jet pump's efficiency and reduce the flow field's non-uniformity.