유체기계공업학회:학술대회논문집
- 유체기계공업학회 2001년도 유체기계 연구개발 발표회 논문집
- /
- Pages.177-184
- /
- 2001
다단 원심펌프 임펠러의 개량 수력설계
Impeller Redesign of Multi-stage Centrifugal Pumps
초록
For two kinds of the multi-stage centrifugal pump with diffuser vanes and return channel vanes the meanline performance prediction is applied to get information of hydraulic performance at each internal flow station, because only flange-to-flange test curves are available. As a first step of redesign fur higher efficiency, the impeller geometry is numerically investigated in the present study. Quasi-3D inviscid loading distributions are obtained, for the two impellers, using the state-of-the-art method of impeller 3D design, which provides a guide to optimal redesign. Full 3D turbulent flow fields are thereafter analyzed, using the specialized CFD code, to confirm the redesign results. The inherent limitation of the traditional graphic method of impeller design, which most of domestic pump manufacturers are now employing, is found.