Abstract：To overcome the inconvenience of traditional centrifugal pump impeller design,the quartic Bezier curve is used to design the meridional plane and blade profile.The control method of these curves is introduced in detail,which can be integrated into the pump design theory.The partial differential equation is used to disperse the meridional plane and generate the centrifugal pump blade surface,then the blade design problem is transformed into the boundary-value problem of partial differential equation.While the boundary condition of the partial differential equation is determined,the blade can be formed.Solving the boundary-value problem with numerical method,we can get the numerical model of pump blade.By importing these datum of blade into the CAD software,we can get the 3-D model of impeller.The parametric design of centrifugal impeller is achieved,and the calculation case shows that the inverse design method of centrifugal pump blade presented here is rational.
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