An inverse-design method for centrifugal pump impellers

R.W. Westra*, N.P. Kruyt, H.W.M. Hoeijmakers

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


    The development of an inverse-design method for the impellers of centrifugal pumps is presented. The flow inside the impeller channel is assumed to be irrotational, inviscid and incompressible. With the inverse-design method infinitely-thin impeller blades can be designed for a given meridional geometry and design conditions. The main design parameter is the meanswirl distribution, which is specified from leading edge to trailing edge and from hub to shroud. The flow in the impeller channel is solved using the Finite Element Method, employing the meanswirl distribution as a boundary condition. The blade shape is changed iteratively until the blade impenetrability condition is fulfilled. The method has been verified by considering a case for which an analytical solution is available and by reconstruction of an existing geometry, with known characteristics, using the inverse-design method. As an application of the method a mixed-flow impeller has been designed and the effect of changing the mean-swirl distribution on the resulting blade shape is clearly demonstrated.

    Original languageEnglish
    Title of host publication2005 ASME Fluids Engineering Division Summer Meeting, FEDSM2005
    Subtitle of host publicationVolume 1: Symposia, Parts A and B
    PublisherAmerican Society of Mechanical Engineers
    Number of pages8
    ISBN (Electronic)0-7918-3760-2
    ISBN (Print)0791837602, 9780791837603
    Publication statusPublished - 1 Dec 2005
    Event2005 ASME 5th International Symposium on Pumping Machinery - Houston, United States
    Duration: 19 Jun 200523 Jun 2005


    Conference2005 ASME 5th International Symposium on Pumping Machinery
    Country/TerritoryUnited States


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