Numerical Investigation of Clocking Effect on Fluctuating Characters and Radial Force within Impeller for a Centrifugal Pump
The present work aims to investigate the influence of vane clocking effect on fluctuating characters and radial force on impeller for centrifugal pump. Numerical simulations were conducted with validation by experiments, at four different relative angular position between vane and tongue. The power...
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2025-01-01
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| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | https://www.jafmonline.net/article_2575_99192fbe6d186cc77dfdc52d8e55501c.pdf |
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| author | X. Zhu X. Han C. Xie H. Zhang E. Jiang |
| author_facet | X. Zhu X. Han C. Xie H. Zhang E. Jiang |
| author_sort | X. Zhu |
| collection | DOAJ |
| description | The present work aims to investigate the influence of vane clocking effect on fluctuating characters and radial force on impeller for centrifugal pump. Numerical simulations were conducted with validation by experiments, at four different relative angular position between vane and tongue. The power consumption and work done by blades are evaluated in time-history. The radial velocity, circumferential velocity at impeller-diffuser clearance is depicted by expanding the turning surface, for comparison under different diffuser position to reveal the flow distortion affected by clocking effect. The results indicate that when vane trailing edge is at tongue (θd1), the corresponding diffuser channel is placed against small flow section in volute leading to a blocking effect that results in significant circumferential inhomogeneity at diffuser outlet. The interaction between impeller blade and different diffuser vane presents distinct intensity, causing the unsteady fluctuation intensity of power consumption of impeller at different vane positions is significantly different, and so is the radial force. As the diffuser vane moves away from tongue (at θd4), the blocking effect reduces and the flow field becomes more evenly distributed among each channel. Resulting in weaker fluctuations in the power consumption, blade load and radial force. |
| format | Article |
| id | doaj-art-60a42e8fe7534e198626f34a5e9d587c |
| institution | Kabale University |
| issn | 1735-3572 1735-3645 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj-art-60a42e8fe7534e198626f34a5e9d587c2025-01-05T06:26:53ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35721735-36452025-01-0118354956610.47176/jafm.18.3.28432575Numerical Investigation of Clocking Effect on Fluctuating Characters and Radial Force within Impeller for a Centrifugal PumpX. Zhu0X. Han1C. Xie2H. Zhang3E. Jiang4Shandong Jianzhu University, Jinan 250101, ChinaShandong Jianzhu University, Jinan 250101, ChinaShanghai Marine Equipment Research Institute, Shanghai 200030, ChinaShandong Jianzhu University, Jinan 250101, ChinaNorthwest A&F University; Yangling 712100, ChinaThe present work aims to investigate the influence of vane clocking effect on fluctuating characters and radial force on impeller for centrifugal pump. Numerical simulations were conducted with validation by experiments, at four different relative angular position between vane and tongue. The power consumption and work done by blades are evaluated in time-history. The radial velocity, circumferential velocity at impeller-diffuser clearance is depicted by expanding the turning surface, for comparison under different diffuser position to reveal the flow distortion affected by clocking effect. The results indicate that when vane trailing edge is at tongue (θd1), the corresponding diffuser channel is placed against small flow section in volute leading to a blocking effect that results in significant circumferential inhomogeneity at diffuser outlet. The interaction between impeller blade and different diffuser vane presents distinct intensity, causing the unsteady fluctuation intensity of power consumption of impeller at different vane positions is significantly different, and so is the radial force. As the diffuser vane moves away from tongue (at θd4), the blocking effect reduces and the flow field becomes more evenly distributed among each channel. Resulting in weaker fluctuations in the power consumption, blade load and radial force.https://www.jafmonline.net/article_2575_99192fbe6d186cc77dfdc52d8e55501c.pdfclocking effectcentrifugal pumpvaned diffuserblade loadblocking effect |
| spellingShingle | X. Zhu X. Han C. Xie H. Zhang E. Jiang Numerical Investigation of Clocking Effect on Fluctuating Characters and Radial Force within Impeller for a Centrifugal Pump Journal of Applied Fluid Mechanics clocking effect centrifugal pump vaned diffuser blade load blocking effect |
| title | Numerical Investigation of Clocking Effect on Fluctuating Characters and Radial Force within Impeller for a Centrifugal Pump |
| title_full | Numerical Investigation of Clocking Effect on Fluctuating Characters and Radial Force within Impeller for a Centrifugal Pump |
| title_fullStr | Numerical Investigation of Clocking Effect on Fluctuating Characters and Radial Force within Impeller for a Centrifugal Pump |
| title_full_unstemmed | Numerical Investigation of Clocking Effect on Fluctuating Characters and Radial Force within Impeller for a Centrifugal Pump |
| title_short | Numerical Investigation of Clocking Effect on Fluctuating Characters and Radial Force within Impeller for a Centrifugal Pump |
| title_sort | numerical investigation of clocking effect on fluctuating characters and radial force within impeller for a centrifugal pump |
| topic | clocking effect centrifugal pump vaned diffuser blade load blocking effect |
| url | https://www.jafmonline.net/article_2575_99192fbe6d186cc77dfdc52d8e55501c.pdf |
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