Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute Tongue
The energy loss inside a centrifugal pump has a significant effect on its performance characteristics. Based on the structural characteristics of the humpback pectoral fin, a new tongue was designed to improve the performance of the centrifugal pump. The influence of three sinusoidal tubercle volute...
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MDPI AG
2023-03-01
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| Online Access: | https://www.mdpi.com/1099-4300/25/3/545 |
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| author | Peifeng Lin Chunhe Wang Pengfei Song Xiaojun Li |
| author_facet | Peifeng Lin Chunhe Wang Pengfei Song Xiaojun Li |
| author_sort | Peifeng Lin |
| collection | DOAJ |
| description | The energy loss inside a centrifugal pump has a significant effect on its performance characteristics. Based on the structural characteristics of the humpback pectoral fin, a new tongue was designed to improve the performance of the centrifugal pump. The influence of three sinusoidal tubercle volute tongues (STVT) and one original volute tongue (OVT) on energy dissipation using the enstrophy analysis method was investigated. To accomplish this, the pressure fluctuations and performances of four centrifugal pumps were analyzed. The results indicate that enstrophy is primarily distributed at the impeller outlet and near the tongue. The total enstrophy of the profiles of STVT was smaller than that of the profiles of OVT. This difference was more obvious near the tongue. The reductions in the total enstrophy of the pumps were 8% (STVT−1), 8.2% (STVT−2), and 9% (STVT−3). The pressure fluctuations of the STVT profiles also decreased to different degrees. The average pressure fluctuations at the monitoring points decreased by 20.6% (STVT−1), 21.7% (STVT−2), and 23.3% (STVT−3). The performances of the bionic retrofit pumps increased by 1.5% (STVT−1), 2% (STVT−2), and 2.45% (STVT−3) under the design flow rate. This study guides the structural optimization of pumps. |
| first_indexed | 2024-03-11T06:34:35Z |
| format | Article |
| id | doaj.art-11053dcdde204f77ba81b7168e96343b |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-11T06:34:35Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-11053dcdde204f77ba81b7168e96343b2023-11-17T10:57:43ZengMDPI AGEntropy1099-43002023-03-0125354510.3390/e25030545Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute TonguePeifeng Lin0Chunhe Wang1Pengfei Song2Xiaojun Li3Key Laboratory of Fluid Transmission Technology of Zhejiang Province, Zhejiang Sci−Tech University, Hangzhou 310018, ChinaKey Laboratory of Fluid Transmission Technology of Zhejiang Province, Zhejiang Sci−Tech University, Hangzhou 310018, ChinaKey Laboratory of Fluid Transmission Technology of Zhejiang Province, Zhejiang Sci−Tech University, Hangzhou 310018, ChinaKey Laboratory of Fluid Transmission Technology of Zhejiang Province, Zhejiang Sci−Tech University, Hangzhou 310018, ChinaThe energy loss inside a centrifugal pump has a significant effect on its performance characteristics. Based on the structural characteristics of the humpback pectoral fin, a new tongue was designed to improve the performance of the centrifugal pump. The influence of three sinusoidal tubercle volute tongues (STVT) and one original volute tongue (OVT) on energy dissipation using the enstrophy analysis method was investigated. To accomplish this, the pressure fluctuations and performances of four centrifugal pumps were analyzed. The results indicate that enstrophy is primarily distributed at the impeller outlet and near the tongue. The total enstrophy of the profiles of STVT was smaller than that of the profiles of OVT. This difference was more obvious near the tongue. The reductions in the total enstrophy of the pumps were 8% (STVT−1), 8.2% (STVT−2), and 9% (STVT−3). The pressure fluctuations of the STVT profiles also decreased to different degrees. The average pressure fluctuations at the monitoring points decreased by 20.6% (STVT−1), 21.7% (STVT−2), and 23.3% (STVT−3). The performances of the bionic retrofit pumps increased by 1.5% (STVT−1), 2% (STVT−2), and 2.45% (STVT−3) under the design flow rate. This study guides the structural optimization of pumps.https://www.mdpi.com/1099-4300/25/3/545bionicsenstrophycentrifugal pumpvolute tongue |
| spellingShingle | Peifeng Lin Chunhe Wang Pengfei Song Xiaojun Li Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute Tongue Entropy bionics enstrophy centrifugal pump volute tongue |
| title | Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute Tongue |
| title_full | Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute Tongue |
| title_fullStr | Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute Tongue |
| title_full_unstemmed | Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute Tongue |
| title_short | Analysis of the Energy Loss and Performance Characteristics in a Centrifugal Pump Based on Sinusoidal Tubercle Volute Tongue |
| title_sort | analysis of the energy loss and performance characteristics in a centrifugal pump based on sinusoidal tubercle volute tongue |
| topic | bionics enstrophy centrifugal pump volute tongue |
| url | https://www.mdpi.com/1099-4300/25/3/545 |
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