Numerical Calculation of the Influence of Working Conditions and Rotational Speed on Pressure Pulsation of a Self‐Priming Pump
ABSTRACT To accurately determine the pressure fluctuation characteristics of a specific self‐priming pump, a full three‐dimensional computational model was established, including the S‐tube, impeller domain, volute domain, gas‐liquid separation chamber, front and rear cavities, wear ring clearance,...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2025-08-01
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| Series: | Energy Science & Engineering |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/ese3.70144 |
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| Summary: | ABSTRACT To accurately determine the pressure fluctuation characteristics of a specific self‐priming pump, a full three‐dimensional computational model was established, including the S‐tube, impeller domain, volute domain, gas‐liquid separation chamber, front and rear cavities, wear ring clearance, and reflux hole. Based on CFD methods, the numerical study investigated the effects of three flow rate conditions and three rotational speeds on pressure fluctuation characteristics. The study also analyzed the variations in radial and axial force distributions and further revealed pressure fluctuation characteristics using standard deviation. The research found that the pressure fluctuation amplitude is the largest under low flow rate conditions with the maximum amplitude reaching 0.115. As the pump inlet flow rate increases, the radial force fluctuations decrease. The asymmetry of the volute structure results in less pronounced periodic changes in the radial force vector distribution. With increasing rotational speed, the pressure fluctuation amplitude near the eighth section of the volute and the volute tongue becomes particularly intense, especially under high‐speed conditions, where the fluctuation amplitude near the tongue reaches 0.25. |
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| ISSN: | 2050-0505 |