{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,9]],"date-time":"2026-01-09T21:15:36Z","timestamp":1767993336451,"version":"3.49.0"},"reference-count":43,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2024,1,10]],"date-time":"2024-01-10T00:00:00Z","timestamp":1704844800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Daeyoung Power Pump Co., Ltd., for the promotion of science"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Computation"],"abstract":"<jats:p>Small submersible drainage pumps are used to discharge leaking water and rainwater in buildings. In an emergency (e.g., heavy rain or accident), advance monitoring of the flow rate is essential to enable optimal operation, considering the point where the pump operates abnormally when the water level is increased rapidly. Moreover, pump performance optimization is crucial for energy-saving policy. Therefore, it is necessary to meet the challenges of submersible pump systems, including sustainability and pump efficiency. The final goal of this study was to develop an energy-saving and highly efficient submersible drainage pump capable of performing efficiently in emergencies. In particular, this paper targeted the hydraulic performance improvement of a submersible drainage pump model. Prior to the development of driving-mode-related technology capable of emergency response, a way to improve the performance characteristics of the existing submersible drainage pump was found. Disassembling of the current pump followed by reverse engineering was performed instead of designing a new pump. Numerical simulation was performed to analyze the flow characteristics and pump efficiency. An experiment was carried out to obtain the performance, and it was validated with numerical results. The results reveal that changing the cross-sectional shape of the impeller reduced the flow separation and enhanced velocity and pressure distributions. Also, it reduced the power and increased efficiency. The results also show that the pump\u2019s efficiency was increased to 5.56% at a discharge rate of 0.17 m3\/min, and overall average efficiency was increased to 6.53%. It was concluded that the submersible pump design method is suitable for the numerical designing of an optimized pump\u2019s impeller and casing. This paper provides insight on the design optimization of pumps.<\/jats:p>","DOI":"10.3390\/computation12010012","type":"journal-article","created":{"date-parts":[[2024,1,11]],"date-time":"2024-01-11T03:21:41Z","timestamp":1704943301000},"page":"12","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Hydraulic Performance Optimization of a Submersible Drainage Pump"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1786-0571","authenticated-orcid":false,"given":"Md","family":"Rakibuzzaman","sequence":"first","affiliation":[{"name":"National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China"},{"name":"Department of Mechanical Engineering, International University of Business Agriculture and Technology, Dhaka 1230, Bangladesh"}]},{"given":"Sang-Ho","family":"Suh","sequence":"additional","affiliation":[{"name":"School of Mechanical Engineering, Soongsil University, Seoul 06978, Republic of Korea"}]},{"given":"Hyung-Woon","family":"Roh","sequence":"additional","affiliation":[{"name":"IVAI Ltd., Gangseo-gu, Seoul 157-754, Republic of Korea"}]},{"given":"Kyung Hee","family":"Song","sequence":"additional","affiliation":[{"name":"Daeyoung Power Pump, Hwaseong City 445-861, Republic of Korea"}]},{"given":"Kwang Chul","family":"Song","sequence":"additional","affiliation":[{"name":"Daeyoung Power Pump, Hwaseong City 445-861, Republic of Korea"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9868-2561","authenticated-orcid":false,"given":"Ling","family":"Zhou","sequence":"additional","affiliation":[{"name":"National Research Center of Pumps, Jiangsu University, Zhenjiang 212013, China"}]}],"member":"1968","published-online":{"date-parts":[[2024,1,10]]},"reference":[{"key":"ref_1","unstructured":"Dabade, S.P., and Gajendragadkar, J. 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