Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered Impeller

For the centrifugal pump, rotor–stator interaction (RSI) induces high-energy pressure pulsation, which directly affects stability of systems and equipment. Therefore, this work proposes a new staggered impeller structure to suppress pulsation in pumps. The original blade is divided into two layers at 10°, 20° 30° form impeller. dynamic characteristics both are predicted using large eddy simulation (LES). results indicate that uniform arrangement blades can significantly reduce energy pump by 54.69% under design conditions, while also achieving best performance. Even off-design still be effectively suppressed blades. study time–frequency domain monitoring points near tongue found phase difference fluctuation caused RSI between prevents superposition efficiently suppresses it pump. provide reference for optimizing low-vibration-noise impellers engineering applications.