Effect of space diffuser on flow characteristics of a centrifugal pump by computational fluid dynamic analysis.

ABSTRACT: Achieving an optimal configuration of the diffuser is indispensable for high pump performances. In this work, a numerical study on diffuser configuration is conducted for a high pump performance using a computational fluid dynamics code, and the effects of the wrap angle and the relative position of the diffuser vane to the impeller on pump performances are included. The results indicate that the modified diffuser with a suitable wrap angle may improve the pump hydraulic efficiency and the head by approximately 4% and 8%, respectively, while a suitable position of the diffuser vane can enhance the pump head by more than 4%. Meanwhile, the pressure recovery coefficient and the local Euler head of the diffuser are adopted to evaluate the diffuser performance. For a high pump performance, the

SUBMITTER: Liu YY 

PROVIDER: S-EPMC6996817 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature