A Study on the Hydrodynamic Excitation Characteristics of Pump and Pipeline Systems Considering the Weakly Compressible Fluid During the Pump Start-Up Condition
With increasing global energy transition and environmental awareness, liquefied natural gas (LNG) is rapidly developing as an efficient and clean energy source. LNG pumps are widely used in industrial applications. This study focuses on the LNG pump and pipeline system, and it innovatively establish...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/18/11/2911 |
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| author | Yonggang Lu Mengjiao Min Wei Song Yun Zhao Zhengwei Wang |
| author_facet | Yonggang Lu Mengjiao Min Wei Song Yun Zhao Zhengwei Wang |
| author_sort | Yonggang Lu |
| collection | DOAJ |
| description | With increasing global energy transition and environmental awareness, liquefied natural gas (LNG) is rapidly developing as an efficient and clean energy source. LNG pumps are widely used in industrial applications. This study focuses on the LNG pump and pipeline system, and it innovatively establishes a computational model based on weak compressible fluid in order to better reflect the characteristics of pressure pulsation and the flow situation. Through numerical simulations, the flow characteristics of the pump were analyzed. In addition, the flow conditions at the pipe tee were analyzed, and the attenuation patterns of pressure waves at different frequencies within the pipe were also investigated. The internal flow field of the pump was analyzed at three specific time points. The results indicate that, during the initial start-up phase, the internal flow state of the pump is complex, with significant vortices and pressure fluctuations. As the flow rate and rotational speed increase, the flow gradually stabilizes. Moreover, the pressure pulsation coefficient within the pipeline varies significantly with position. |
| format | Article |
| id | doaj-art-0192b39f169e4308bda89d1900a7bdc0 |
| institution | DOAJ |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-0192b39f169e4308bda89d1900a7bdc02025-08-20T03:11:18ZengMDPI AGEnergies1996-10732025-06-011811291110.3390/en18112911A Study on the Hydrodynamic Excitation Characteristics of Pump and Pipeline Systems Considering the Weakly Compressible Fluid During the Pump Start-Up ConditionYonggang Lu0Mengjiao Min1Wei Song2Yun Zhao3Zhengwei Wang4State Key Laboratory of Hydro-Science and Engineering, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro-Science and Engineering, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro-Science and Engineering, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro-Science and Engineering, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, ChinaState Key Laboratory of Hydro-Science and Engineering, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, ChinaWith increasing global energy transition and environmental awareness, liquefied natural gas (LNG) is rapidly developing as an efficient and clean energy source. LNG pumps are widely used in industrial applications. This study focuses on the LNG pump and pipeline system, and it innovatively establishes a computational model based on weak compressible fluid in order to better reflect the characteristics of pressure pulsation and the flow situation. Through numerical simulations, the flow characteristics of the pump were analyzed. In addition, the flow conditions at the pipe tee were analyzed, and the attenuation patterns of pressure waves at different frequencies within the pipe were also investigated. The internal flow field of the pump was analyzed at three specific time points. The results indicate that, during the initial start-up phase, the internal flow state of the pump is complex, with significant vortices and pressure fluctuations. As the flow rate and rotational speed increase, the flow gradually stabilizes. Moreover, the pressure pulsation coefficient within the pipeline varies significantly with position.https://www.mdpi.com/1996-1073/18/11/2911pump and pipeline systemstart-up conditionweak compressibilitypressure pulsation |
| spellingShingle | Yonggang Lu Mengjiao Min Wei Song Yun Zhao Zhengwei Wang A Study on the Hydrodynamic Excitation Characteristics of Pump and Pipeline Systems Considering the Weakly Compressible Fluid During the Pump Start-Up Condition Energies pump and pipeline system start-up condition weak compressibility pressure pulsation |
| title | A Study on the Hydrodynamic Excitation Characteristics of Pump and Pipeline Systems Considering the Weakly Compressible Fluid During the Pump Start-Up Condition |
| title_full | A Study on the Hydrodynamic Excitation Characteristics of Pump and Pipeline Systems Considering the Weakly Compressible Fluid During the Pump Start-Up Condition |
| title_fullStr | A Study on the Hydrodynamic Excitation Characteristics of Pump and Pipeline Systems Considering the Weakly Compressible Fluid During the Pump Start-Up Condition |
| title_full_unstemmed | A Study on the Hydrodynamic Excitation Characteristics of Pump and Pipeline Systems Considering the Weakly Compressible Fluid During the Pump Start-Up Condition |
| title_short | A Study on the Hydrodynamic Excitation Characteristics of Pump and Pipeline Systems Considering the Weakly Compressible Fluid During the Pump Start-Up Condition |
| title_sort | study on the hydrodynamic excitation characteristics of pump and pipeline systems considering the weakly compressible fluid during the pump start up condition |
| topic | pump and pipeline system start-up condition weak compressibility pressure pulsation |
| url | https://www.mdpi.com/1996-1073/18/11/2911 |
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