Hydraulic performance of a mixed-flow pump : unsteady inviscid computations and loss models

B.P.M. Esch, van, N.P. Kruyt

Research output: Contribution to journalArticleAcademicpeer-review

44 Citations (Scopus)

Abstract

The hydraulic performance of an industrial mixed-flow pump is analyzed using a three-dimensional potential flow model to compute the unsteady flow through the entire pump configuration. Subsequently, several additional models that use the potential flow results are employed to assess the losses. Computed head agrees well with experiments in the range 70 percent–130 percent BEP flow rate. Although the boundary layer displacement in the volute is substantial, its effect on global characteristics is negligible. Computations show that a truly unsteady analysis of the complete impeller and volute is necessary to compute even global performance characteristics; an analysis of an isolated impeller channel and volute with an averaging procedure at the interface is inadequate.
Original languageEnglish
Pages (from-to)256-264
JournalJournal of Fluids Engineering : Transactions of the ASME
Volume123
Issue number2
DOIs
Publication statusPublished - 2001

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