Abstract
Axial flow pump is widely used in energy, agriculture, urban water supply and drainage, water conservancy engineering, ships and other fields. As one of the important flow passage parts of axial flow pump, guide vane can be used to smooth the rotation of fluid after passing through the impeller, change it into axial motion, and change the kinetic energy of rotation into pressure energy. In this paper, the hydraulic performance and pressure pulsation of axial flow pump with three different guide vane numbers are analyzed by numerical simulation. Under rated flow and large flow conditions, increasing the number of guide vanes is more conducive to suppress the pressure pulsation.
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