Performance analysis on solid-liquid mixed flow in a centrifugal pump

[摘要] In order to study the solid-liquid mixed flow hydraulic characteristics of centrifugal pump, the Pro/E software was used for three-dimensional modeling of centrifugal pump chamber. By using the computational fluid dynamics software CFX, the numerical simulation calculation of solid-liquid two-phase flow within whole flow passage of centrifugal pump was conducted. Aim at different particle diameters, the Reynolds-averaged N-S equations with the RNG k- turbulence model and SIMPLEC algorithm were used to simulate the two-phase flow respectively on the condition of different volume fraction. The influence of internal flow characteristic on pump performance was analyzed. On the conditions of different particle diameter and different volume fraction, the turbulence kinetic energy and particle concentration are analyzed. It can be found that the erosion velocity ratio on the flow channel wall increases along with the increasing of the volume fraction.

[发布机构] National Research Center of Pumps, Jiangsu University, Zhenjiang, Jiangsu, China^1

[效力级别] 工业技术 [学科分类] 工业工程学

[关键词] Computational Fluid Dynamics software;Internal flow characteristics;Numerical simulation calculation;Particle concentrations;Performance analysis;Solid-liquid two phase flows;Three-dimensional model;Turbulence kinetic energy