A study on a design for a centrifugal pump impeller shape

J. Ocean Eng. Technol. 1997;11(4):213-220.

원심펌프 회전차 형상 설계에 대한 연구

김진환

동의대학교 기계공학과

Keywords: Flow Rate, Total Head, Theoretical Head, Specific Speed, Windows, Bezier Cubic Curve, Visual Basic

Abstract

In this study, a design for a shape of centrifugal pump impeller has been performed using a p.c. under a Windows environment. Interaction between a user and a computer has been easily established using the Visual Basic. In determining an outer diameter of an impeller, steps are divided into two, a basic computational step and a refinment step. In this way user can enter his/her experience at the refinment step and hence can expect to lessen the nonlinear nature inherent to the design. In determining a shape of a side view of an impeller, the Bezier cubic curve has been used, and it can be seen that the Bezier cubic curves are well suited in the shape design under a Windows environment. By simply manipulating the four control points, one can generate various cubic curves among which one is selected. Also, a simple method, which can determine the curved position of an impeller vane, has been developed. These data can be used for final CAD drawings.