Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered Impeller
For the centrifugal pump, the rotor–stator interaction (RSI) induces high-energy pressure pulsation, which directly affects the stability of systems and equipment. Therefore, this work proposes a new staggered impeller structure to suppress high-energy pressure pulsation in centrifugal pumps. The or...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/16/9/3848 |
| _version_ | 1797602677769633792 |
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| author | Dan Ni Jinbo Chen Feifan Wang Yanjuan Zheng Yang Zhang Bo Gao |
| author_facet | Dan Ni Jinbo Chen Feifan Wang Yanjuan Zheng Yang Zhang Bo Gao |
| author_sort | Dan Ni |
| collection | DOAJ |
| description | For the centrifugal pump, the rotor–stator interaction (RSI) induces high-energy pressure pulsation, which directly affects the stability of systems and equipment. Therefore, this work proposes a new staggered impeller structure to suppress high-energy pressure pulsation in centrifugal pumps. The original impeller blade is divided into two layers and is staggered at 10°, 20° and 30° to form a staggered impeller. The dynamic pressure pulsation characteristics of both the original impeller and the staggered impeller are predicted using large eddy simulation (LES). The results indicate that the uniform staggered arrangement of blades can significantly reduce the pressure pulsation energy in the pump by 54.69% under the design conditions, while also achieving the best performance. Even under off-design conditions, the pressure pulsation energy can still be effectively suppressed by the staggered blades. The study of the time–frequency domain of the monitoring points near the tongue found that the phase difference in the pressure fluctuation caused by the RSI between the staggered impeller and the tongue prevents the superposition of pressure pulsation energy and efficiently suppresses it in the pump. The results can provide a reference for optimizing low-vibration-noise pump impellers in engineering applications. |
| first_indexed | 2024-03-11T04:19:03Z |
| format | Article |
| id | doaj.art-3f3ad69b6b024f9f9b0c191a94350fbf |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-11T04:19:03Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-3f3ad69b6b024f9f9b0c191a94350fbf2023-11-17T22:52:34ZengMDPI AGEnergies1996-10732023-04-01169384810.3390/en16093848Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered ImpellerDan Ni0Jinbo Chen1Feifan Wang2Yanjuan Zheng3Yang Zhang4Bo Gao5School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, ChinaSchool of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, ChinaShanghai Marine Equipment Research Institute (SMERI), Shanghai 200031, ChinaShanghai Marine Equipment Research Institute (SMERI), Shanghai 200031, ChinaSchool of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013, ChinaFor the centrifugal pump, the rotor–stator interaction (RSI) induces high-energy pressure pulsation, which directly affects the stability of systems and equipment. Therefore, this work proposes a new staggered impeller structure to suppress high-energy pressure pulsation in centrifugal pumps. The original impeller blade is divided into two layers and is staggered at 10°, 20° and 30° to form a staggered impeller. The dynamic pressure pulsation characteristics of both the original impeller and the staggered impeller are predicted using large eddy simulation (LES). The results indicate that the uniform staggered arrangement of blades can significantly reduce the pressure pulsation energy in the pump by 54.69% under the design conditions, while also achieving the best performance. Even under off-design conditions, the pressure pulsation energy can still be effectively suppressed by the staggered blades. The study of the time–frequency domain of the monitoring points near the tongue found that the phase difference in the pressure fluctuation caused by the RSI between the staggered impeller and the tongue prevents the superposition of pressure pulsation energy and efficiently suppresses it in the pump. The results can provide a reference for optimizing low-vibration-noise pump impellers in engineering applications.https://www.mdpi.com/1996-1073/16/9/3848centrifugal pumpstaggered impellernumerical simulationpressure pulsationphase difference |
| spellingShingle | Dan Ni Jinbo Chen Feifan Wang Yanjuan Zheng Yang Zhang Bo Gao Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered Impeller Energies centrifugal pump staggered impeller numerical simulation pressure pulsation phase difference |
| title | Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered Impeller |
| title_full | Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered Impeller |
| title_fullStr | Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered Impeller |
| title_full_unstemmed | Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered Impeller |
| title_short | Investigation into Dynamic Pressure Pulsation Characteristics in a Centrifugal Pump with Staggered Impeller |
| title_sort | investigation into dynamic pressure pulsation characteristics in a centrifugal pump with staggered impeller |
| topic | centrifugal pump staggered impeller numerical simulation pressure pulsation phase difference |
| url | https://www.mdpi.com/1996-1073/16/9/3848 |
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