The Solid Phase Influence On The Performance Of The Solid-liquid Pump Based On Numerical Simulation And PIV Measurement

The Solid-liquid pump is the key transportation equipment of solid-liquid mixture, it waswidely used in the national production fields, such as dredging, water conservancy,environmental protection industries and so on. But with the wide application ofsolid-liquid pump, its shortcomings and insufficiencies in the actual use weregradually revealed, such as serious wear and tear on flow components and lowefficiency. At the same time, due to the complexity of the two phases flow, thetheories and the design methods were still not mature, many two-phase flow laws inthe solid-liquid pump has not been revealed. Most of the design is based onexperience in engineering practice so that design of the pump’s performance notguarantee. So the further research of solid-liquid pump is urgent need in order toprovide theoretical foundation of designing a high performance and operation stablepump. In recent years，with the Particle Image Velocimetry (PIV) rapid development,it has became a kind of effective test means with which people gain a transient, nocontacted, plane flow field.In order to research pump internal law of the solid-liquid two-phase flow, acombination way of numerical simulation and PIV experimental study was adopted inthis paper, According to the comparison of simulation results and PIV measurement,we can acquire further understanding of solid-liquid flow field and the flow law. It ishelpful to improve the structure and the performance of the pump.The main work is outlined as following:1) Summarizing the research result and the status in solid-liquid two-phasepump and PIV (Particle Image Velocimetry) measurement of the domestic andforeign scholars.2) The modeling software UG was used to modele the stereo centrifugal pump,and it was imported into Fluent software, where the water and solid-liquid two-phase flow numerical simulation was carried out, and the results were analyzed.3) The solid-liquid two-phase pump test platform was Improved, different flowrate of the solid-liquid two-phase flow PIV experiments carried out, which providedthe particles speed and movement characteristics in the flow field.4) The comprehensive comparative analysis between the numerical results andPIV test result was made in order to verify the reliability of numerical simulation andPIV measurement method for each other. And some important test results wasobtained for the subsequent study of the solid-liquid pump.