Investigation of Flow-Induced Noise Characteristics in the Oblique Flow Pump

An oblique flow pump is widely used in farmland irrigation and drainage, water transfer projects, thermal power generation, other fields. However, unstable factors the easily lead to vibration noise. To improve stability of operation optimize operating environment, it necessary study flow-induced noise characteristics pumps. In this paper, CFD simulation software are calculate field sound pump. The internal were studied. results show that when rate deviates from optimal point, especially small rate, due phenomena backflow separation, more high-energy vortices produced channel, distributed a wide area, which will cause greater It found with increase pressure level inlet channel gradually decreases, guide vane region first decreases then increases, lowest at 1.0Q. Generally speaking, outlet also decreases. addition, blade frequency, radiated can dipole under various conditions, radiation increases rate. This paper provide theoretical basis for mechanism research control strategy