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Article

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

Victor Kaplan Department of Fluid Engineering, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, 616 69 Brno, Czech Republic
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Academic Editor: Ricardo J. Bessa
Energies 2021, 14(13), 3785; https://doi.org/10.3390/en14133785
Received: 28 May 2021 / Revised: 19 June 2021 / Accepted: 21 June 2021 / Published: 24 June 2021
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. View Full-Text
Keywords: low specific speed; numerical simulation; splitter blades; volute; centrifugal pump low specific speed; numerical simulation; splitter blades; volute; centrifugal pump
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MDPI and ACS Style

Chabannes, L.; Štefan, D.; Rudolf, P. Effect of Splitter Blades on Performances of a Very Low Specific Speed Pump. Energies 2021, 14, 3785. https://doi.org/10.3390/en14133785

AMA Style

Chabannes L, Štefan D, Rudolf P. Effect of Splitter Blades on Performances of a Very Low Specific Speed Pump. Energies. 2021; 14(13):3785. https://doi.org/10.3390/en14133785

Chicago/Turabian Style

Chabannes, Lilian, David Štefan, and Pavel Rudolf. 2021. "Effect of Splitter Blades on Performances of a Very Low Specific Speed Pump" Energies 14, no. 13: 3785. https://doi.org/10.3390/en14133785

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