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CHABANNES, L. ŠTEFAN, D. RUDOLF, P.
Original Title
Effect of Splitter Blades on Performances of a Very Low Specific Speed Pump
Type
journal article in Web of Science
Language
English
Original Abstract
The usage of splitter blades to enhance the performances of low specific speed pumps is common practice. Based on experimental and numerical studies, the influence of the addition of one and two splitter blades is investigated on a very low specific speed pump to assess their impact not only on the performance characteristics but also on the losses in all pump domains. First, the main characteristic curves are discussed and it is shown that the usage of splitter blades enhances the head of the pump while not impairing its efficiency. Secondly, a detailed analysis of the losses in the pump reveals that splitter blades improve the flow in all parts of the pumps, but the volute. The flow at the impeller outlet shows that splitter blades largely benefit the slip factor and discharges a more blade-congruent flow in the volute. However, higher absolute velocity at the outlet of the impeller with splitter blades increases friction at the volute wall, as confirmed by the average wall shear stress in the different tested cases.
Keywords
low specific speed; numerical simulation; splitter blades; volute; centrifugal pump
Authors
CHABANNES, L.; ŠTEFAN, D.; RUDOLF, P.
Released
24. 6. 2021
Publisher
MDPI
ISBN
1996-1073
Periodical
ENERGIES
Year of study
14
Number
13
State
Swiss Confederation
Pages from
1
Pages to
Pages count
URL
https://www.mdpi.com/1996-1073/14/13/3785
Full text in the Digital Library
http://hdl.handle.net/11012/200961
BibTex
@article{BUT171988, author="Lilian {Chabannes} and David {Štefan} and Pavel {Rudolf}", title="Effect of Splitter Blades on Performances of a Very Low Specific Speed Pump", journal="ENERGIES", year="2021", volume="14", number="13", pages="1--13", doi="10.3390/en14133785", issn="1996-1073", url="https://www.mdpi.com/1996-1073/14/13/3785" }