IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v317y2025ics0360544225003408.html
   My bibliography  Save this article

Effects of impeller trimming on energy performance and fluid-structure interaction characteristics of the two-stage pump

Author

Listed:
  • Xu, Zhengxuan
  • Zhang, Fan
  • Zhu, Lufeng
  • Chen, Ke
  • Zhang, Jinfeng
  • Hong, Qiuhong

Abstract

In this paper, the effects of impeller trimming on the performance and fluid-structure interaction characteristics of the two-stage pump are studied by numerical simulation and experimental verification. The existing impeller trimming formulas are primarily applicable to single-stage pumps. Applying these formulas to the current two-stage pump reveals that while they provide a reasonable approximation, discrepancies exist, indicating a need for greater precision. Therefore, the head trimming formula is preliminarily revised for this kind of pump. Meanwhile, according to the experimental data, a preliminary deduction indicates that the ratio between the ratio of change of each trim and the ratio of change of head is about 1.1. The variation of impeller dynamic characteristics under different trimming quantities is also studied. It was found that the prototype pump experienced the greatest pressure at 0.4Q. As the impeller is trimmed, the influence of the flow change on the pressure change in the impeller becomes smaller. The changing trend of equivalent stress with flow rate gradually flattened. Therefore, reasonable trimming of the impeller can optimize the stress of the impeller, reduce the fluid impact on the impeller when the pump is under variable flow conditions.

Suggested Citation

  • Xu, Zhengxuan & Zhang, Fan & Zhu, Lufeng & Chen, Ke & Zhang, Jinfeng & Hong, Qiuhong, 2025. "Effects of impeller trimming on energy performance and fluid-structure interaction characteristics of the two-stage pump," Energy, Elsevier, vol. 317(C).
    • Handle: RePEc:eee:energy:v:317:y:2025:i:c:s0360544225003408
    DOI: 10.1016/j.energy.2025.134698
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544225003408
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.energy.2025.134698?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:energy:v:317:y:2025:i:c:s0360544225003408. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.