Performance Prediction with Numerical Simulation of Turbulent Flow and Experimental Verification for Double-suction Pump

In order to improve the performance of a double-suction pump,the RNG k-e turbulence model and the standard SIMPLE algorithm are applied to numerically simulate the three-dimensional viscous flow inside the whole flow passage of a double-suction centrifugal pump.Based on the numerical simulation of flow,the fluid dynamic performance at different operation conditions were predicted,and the predicted performance curves were compared with the experimental results.It shows that this method can provide a good prediction for performance curve of a double-suction pump.In addition,a predictive analysis of the internal characteristics of the double-suction pump is carried out by analyzing the distributions of velocity and pressure inside the double-suction pump.It has shown that the performance prediction is very important to guide the hydraulic optimal design or re-design of the passage of a double-suction centrifugal pump in the practical engineering.