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Typically, in order to prevent the rainwater flooding of populated areas and limit the large water circulation in pumps for power plants, flooding of farmland, the propeller pumps used primarily introduced for drainage and sewage treatment are consist of large suction casing, impeller, discharge casing, and motor. When the main shaft and the impeller rotate and driven by an electric motor, the fluid sucked through the suction casing has the principle to be sent to the outside through the impeller and the guide vane. At this time most of the propeller pump that have T shape, severe vibration and vortex the drop of efficiency of the pump. Therefore, in this paper, we increased the mechanical efficiency through the change of the design and through the numerical methods for the impact and efficiency on the lift flow characteristics, the Reynolds number was derived and the feasibility of reducing turbulence and vibration was analyzed.

A Study on the Efficiency Improvements of the Modified Design Propeller Pump Using Numerical Methods