Matching Optimization of a Mixed Flow Pump Impeller and Diffuser Based on the Inverse Design Method

When considering the interaction between impeller and diffuser, it is necessary to provide logical systematic guidance for their matching optimization. In this study, goal was develop a comprehensive optimization strategy optimize diffuser of mixed flow pump. Some useful tools methods, such as inverse design method, computational fluid dynamics (CFD), experiment, surrogate model, algorithm, were used. The process divided into two steps. first step, only optimized. Thereafter, CFD analysis performed on optimized get circulation field distribution at outlet impeller. second step optimization, inlet set be same outlet. results show that proposed in study effective can overcome shortcomings single-component thereby further improving overall effect. Compared with baseline pump efficiency model 1.2Qdes, 1.0Qdes, 0.8Qdes increased by 6.47%, 3.68%, 0.82%, respectively.