Numerical simulation study of the impellers of the centrifugal pump based on different turbulence models

摘要

The Computational Fluid (CFD) technology has been successfully used in the numerical simulation of the turbulent flow of centrifugal pump. In this article, we carry on the experiment by using uses ANSYS software, based on the standard k-ε model, SST model and BSL model, to get the flow field of the numerical simulation of the impeller. We found that the simulation results and the actual results are different under different turbulence models. Then we can draw out the Q-η curve and compare it with the actual test data. Compared with other turbulence models, The SST model is more suitable for the models of centrifugal pumps in the article. Furthermore, we list the pressure contours and velocity vectors for pumps discussed in the paper under the optimal model. The process can provide a theoretical reference for the optimization and further study of the centrifugal pump in the future. The centrifugal pumps is used very largely in the modernized society. The impellers is also the most important flow components of the Centrifugal pump. The impellers can directly change the original motivation mechanical energy to the liquid in order to increase the static pressure and kinetic energy of the liquid. So how to improve the performance of its hydraulic pump efficiency has great significance in improving its efficiency. In recently, the CFD analysis techniques has been widely applied and gradually improved in fans, pumps and many other industries. In addition, the CFD analysis techniques has also become an important method to the pump body CFD numerical simulation of flow field for the optimization of pump. Furthermore, a large number of engineering in practice has proved that the numerical simulation results are quite reliable. However, the result of which model is most consistent with the practice is still a problem needed to be discussed.