Cavitation and erosion effects on hydraulic performances of a submersible drainage pump
Hydraulic performance and operational stability of submersible drainage pumps can be affected by cavitation and erosion when used for draining water from buildings. A parametric study is essential to improve the suction performance and accurately identify the cavitation and erosion phenomena in the...
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Elsevier
2025-02-01
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| Series: | Alexandria Engineering Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S111001682401531X |
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| author | Md Rakibuzzaman Sang-Ho Suh Hyoung-Ho Kim Md. Didarul Islam Ling Zhou Mahmoud A. El-Emam |
| author_facet | Md Rakibuzzaman Sang-Ho Suh Hyoung-Ho Kim Md. Didarul Islam Ling Zhou Mahmoud A. El-Emam |
| author_sort | Md Rakibuzzaman |
| collection | DOAJ |
| description | Hydraulic performance and operational stability of submersible drainage pumps can be affected by cavitation and erosion when used for draining water from buildings. A parametric study is essential to improve the suction performance and accurately identify the cavitation and erosion phenomena in the pump, providing a technical reference for monitoring its optimal operation. Therefore, the main objective of this research is to develop an energy-saving, high-efficiency submersible pump capable of emergency response. In this paper, the Reynolds-average Navier-Stokes (RANS) equations were applied to the steady calculation of the submersible pump, which was discretized by the finite volume method. The Reyleigh-Plesset cavitation model was considered for interphase mass transfer to predict and find the cavitation characteristics. Additionally, the discrete phase model (DPM) was adopted as an Eulerian-Eulerian approach combined with Grant and Tabakoff's erosion model to capture the erosion effects in the pump numerically. A test pump was installed, and an experiment was conducted to assess hydraulic performance, validated with computational data. Improving the impeller or casing shape can increase NPSH3 % by at least 3.80 %, with a potential improvement of 4.083 % when only the impeller shape is changed. Erosion rate density increases with particle inflow rate, but model differences decrease as the flow rate increases. Modifying the impeller and casing shapes can reduce the average erosion rate density by at least 25 %. Average efficiency improvements of 4–5 % can be achieved by optimizing the casing shape, though practical implementation is challenging. Optimizing the pump's flow path is essential for improving hydraulic performance and reducing erosion and cavitation. |
| format | Article |
| id | doaj-art-c2cfaf2e1dca431da59057d426278c67 |
| institution | Kabale University |
| issn | 1110-0168 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Alexandria Engineering Journal |
| spelling | doaj-art-c2cfaf2e1dca431da59057d426278c672025-02-07T04:47:11ZengElsevierAlexandria Engineering Journal1110-01682025-02-01113431450Cavitation and erosion effects on hydraulic performances of a submersible drainage pumpMd Rakibuzzaman0Sang-Ho Suh1Hyoung-Ho Kim2Md. Didarul Islam3Ling Zhou4Mahmoud A. El-Emam5Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China; Department of Mechanical Engineering, International University of Business Agriculture and Technology, Dhaka 1230, BangladeshSchool of Mechanical Engineering, Soongsil University, Seoul 06978, South KoreaSchool of Aerospace Engineering, Gyeongsang National University, Jinju 52725, South KoreaDepartment of Mechanical Engineering, Graduate School of Engineering, Gyeongsang National University, Jinju 52725, South KoreaResearch Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China; Corresponding author.Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013, China; Department of Agricultural and Biosystems Engineering, Alexandria University, Shatby 21526, EgyptHydraulic performance and operational stability of submersible drainage pumps can be affected by cavitation and erosion when used for draining water from buildings. A parametric study is essential to improve the suction performance and accurately identify the cavitation and erosion phenomena in the pump, providing a technical reference for monitoring its optimal operation. Therefore, the main objective of this research is to develop an energy-saving, high-efficiency submersible pump capable of emergency response. In this paper, the Reynolds-average Navier-Stokes (RANS) equations were applied to the steady calculation of the submersible pump, which was discretized by the finite volume method. The Reyleigh-Plesset cavitation model was considered for interphase mass transfer to predict and find the cavitation characteristics. Additionally, the discrete phase model (DPM) was adopted as an Eulerian-Eulerian approach combined with Grant and Tabakoff's erosion model to capture the erosion effects in the pump numerically. A test pump was installed, and an experiment was conducted to assess hydraulic performance, validated with computational data. Improving the impeller or casing shape can increase NPSH3 % by at least 3.80 %, with a potential improvement of 4.083 % when only the impeller shape is changed. Erosion rate density increases with particle inflow rate, but model differences decrease as the flow rate increases. Modifying the impeller and casing shapes can reduce the average erosion rate density by at least 25 %. Average efficiency improvements of 4–5 % can be achieved by optimizing the casing shape, though practical implementation is challenging. Optimizing the pump's flow path is essential for improving hydraulic performance and reducing erosion and cavitation.http://www.sciencedirect.com/science/article/pii/S111001682401531XSubmersible drainage pumpComputational Fluid Dynamics (CFD)CavitationErosion modelExperiment |
| spellingShingle | Md Rakibuzzaman Sang-Ho Suh Hyoung-Ho Kim Md. Didarul Islam Ling Zhou Mahmoud A. El-Emam Cavitation and erosion effects on hydraulic performances of a submersible drainage pump Alexandria Engineering Journal Submersible drainage pump Computational Fluid Dynamics (CFD) Cavitation Erosion model Experiment |
| title | Cavitation and erosion effects on hydraulic performances of a submersible drainage pump |
| title_full | Cavitation and erosion effects on hydraulic performances of a submersible drainage pump |
| title_fullStr | Cavitation and erosion effects on hydraulic performances of a submersible drainage pump |
| title_full_unstemmed | Cavitation and erosion effects on hydraulic performances of a submersible drainage pump |
| title_short | Cavitation and erosion effects on hydraulic performances of a submersible drainage pump |
| title_sort | cavitation and erosion effects on hydraulic performances of a submersible drainage pump |
| topic | Submersible drainage pump Computational Fluid Dynamics (CFD) Cavitation Erosion model Experiment |
| url | http://www.sciencedirect.com/science/article/pii/S111001682401531X |
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