Abstract
This article determined the blade profile by using the Bezier Curve.Start with ensuring the blade Angle and the blade profile , this paper designed a new impeller, avoided the appearance of the "S" shape of the blade profile, it ensured the smoothness of the blade profile. Compared with the traditional design of the impeller,Combined with mechanical mechanics software CFX, this article took a numerical calculation and simulation about the impeller and the hydrographic basin , compared the two impeller's residuals, velocity vector,pressure distribution and pressure water room's static pressure distribution,analysed and evaluated the performance of the pump.
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