Publication result detail

Effect of Splitter Blades on Performances of a Very Low Specific Speed Pump

CHABANNES, L.; ŠTEFAN, D.; RUDOLF, P.

Original Title

Effect of Splitter Blades on Performances of a Very Low Specific Speed Pump

English Title

Effect of Splitter Blades on Performances of a Very Low Specific Speed Pump

Type

WoS Article

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.

English 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

Key words in English

low specific speed; numerical simulation; splitter blades; volute; centrifugal pump

Authors

CHABANNES, L.; ŠTEFAN, D.; RUDOLF, P.

RIV year

2021

Released

24.06.2021

Publisher

MDPI

ISBN

1996-1073

Periodical

Energies

Volume

14

Number

13

State

Swiss Confederation

Pages from

1

Pages to

13

Pages count

13

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",
  url="https://www.mdpi.com/1996-1073/14/13/3785"
}

Documents

energies-14-03785