Bpm. Van Esch et Np. Kruyt, Hydraulic performance of a mixed-flow pump: Unsteady inviscid computationsand loss models, J FLUID ENG, 123(2), 2001, pp. 256-264
Citations number
39
Categorie Soggetti
Mechanical Engineering
Journal title
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME
The hydraulic performance of an industrial mixed-flow pump is analyzed usin
g a three-dimensional potential flow model to compute the unsteady flow thr
ough the entire pump configuration. Subsequently, several additional models
that use the potential flow results are employed to assess the losses. Com
puted head agrees well with experiments in the range 70 percent-130 percent
BEP flow rate. Although the boundary layer displacement in the volute is s
ubstantial, its effect on global characteristics is negligible. Computation
s show that a truly unsteady analysis of the complete impeller and volute i
s 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.