Full Content is available to subscribers

Subscribe/Learn More  >

CFD Analysis of Axial Thrust in Three Stages Centrifugal Pump at Design and Partload Conditions

[+] Author Affiliations
Hiroyoshi Watanabe

Ebara Corporation, Futtu-shi, Japan

Tetsuya Yamashita, Satoshi Watanabe, Yoshinori Hara

Kyushu University, Fukuoka, Japan

Paper No. AJKFluids2015-02272, pp. V01AT02A005; 8 pages
  • ASME/JSME/KSME 2015 Joint Fluids Engineering Conference
  • Volume 1A: Symposia, Part 2
  • Seoul, South Korea, July 26–31, 2015
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5721-3
  • Copyright © 2015 by JSME


The performance, internal flow fields and fluid forces acted on the impellers and balance piston of three stages centrifugal pump at design and partload conditions are investigated by using URANS (Unsteady Reynolds Averaged Navier-Stokes) CFD analysis.

In this study, investigations were concentrated on the details of the flow fields in the sidewall gaps of the impellers and at the impeller exit/diffuser inlet with the rotor axial offsets, and its effects on the thrust forces acting on the impeller, especially at the partload condition.

From the details of flow field predicted by CFD, the mechanisms of change of axial thrust forces with the rotor axial offsets are as follows. The overwrap between the impeller shroud wall and diffuser casing wall becomes smaller by the axial offsets at the opposite side of axial offset direction, this makes the flow to leak out easier from the impeller side into the side wall gaps there. As a result, the interaction between the swirl flow in the side wall gap and reverse flow from the diffuser become stronger. The strong inward flow in the front side wall gap induced by the diffuser reverse flow works as a swirl breaker weakening the swirl flow in the gap. The pressure distributions in the side wall gaps are affected by these changes of swirl flow in the gap and the axial thrust forces working on the rotor are changed.

The predicted change of axial thrust forces with the rotor axial offsets show good agreement with the experimental values.

Copyright © 2015 by JSME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In