Design of a Mixed Flow Pump Impeller Blade and its Validation Using Stress Analysis

The failure of blades of a mixed flow pump impeller is generally due to excessive stress development. In order to avoid such situation one should design the blades taking into consideration the Von Misses stress distribution in the impeller blades. In this present work design and stress analysis has been carried out on mixed flow pump impeller blades having different positions in the meridional annulus. The maximum Von Misses stress distribution was compared among the different blade positions. The inlet inclined blade position in the meridional annulus was found to be more suitable than the trapezoidal one as the Von Misses Stress distribution was lesser for inlet inclined blade.