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RUDOLF, P. KLAS, R.
Original Title
Numerical simulation of pump-intake vortices
Type
conference paper
Language
English
Original Abstract
Pump pre-swirl or uneven flow distribution in front of the pump can induce pump-intake vortices. These phenomena result in blockage of the impeller suction space, deterioration of efficiency, drop of head curve and earlier onset of cavitation. Real problematic case, where head curve drop was documented, is simulated using commercial CFD software. Computational simulation was carried out for three flow rates, which correspond to three operating regimes of the vertical pump. The domain consists of the pump sump, pump itself excluding the impeller and the delivery pipe. One-phase approach is applied, because the vortex cores were not filled with air during observation of the real pump operation. Numerical simulation identified two surface vortices and one bottom vortex. Their position and strength depend on the pump flow rate. Paper presents detail analysis of the flow field on the pump intake, discusses influence of the vortices on pump operation and suggests possible actions that should be taken to suppress the intake vortices.
Keywords
pump, instake vortex, pump well, CFD
Authors
RUDOLF, P.; KLAS, R.
RIV year
2015
Released
6. 5. 2015
Publisher
EDP Sciences
ISBN
2100-014X
Periodical
EPJ Web of Conferences
Year of study
92
Number
5
State
French Republic
Pages from
1
Pages to
6
Pages count
URL
https://www.epj-conferences.org/articles/epjconf/abs/2015/11/epjconf_efm2014_02077/epjconf_efm2014_02077.html
Full text in the Digital Library
http://hdl.handle.net/11012/201337
BibTex
@inproceedings{BUT114865, author="Pavel {Rudolf} and Roman {Klas}", title="Numerical simulation of pump-intake vortices", booktitle="EPJ Web of Conferences", year="2015", journal="EPJ Web of Conferences", volume="92", number="5", pages="1--6", publisher="EDP Sciences", doi="10.1051/epjconf/20159202077", issn="2100-014X", url="https://www.epj-conferences.org/articles/epjconf/abs/2015/11/epjconf_efm2014_02077/epjconf_efm2014_02077.html" }