Transient Behavior of a Prototype Centrifugal Pump with Abrupt Decreasing Flow Rate
Centrifugal pump often operates at different working flow rates to meet engineering requirement. To better reveal the transient behavior of centrifugal pump in the process of decreasing flow rate, the finite volume method (FVM), RNG k-ε turbulence model, sliding mesh technology, and user-defined fun...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/5586206 |
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| _version_ | 1849395815645184000 |
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| author | Yan-Juan Zhao Yu-Liang Zhang |
| author_facet | Yan-Juan Zhao Yu-Liang Zhang |
| author_sort | Yan-Juan Zhao |
| collection | DOAJ |
| description | Centrifugal pump often operates at different working flow rates to meet engineering requirement. To better reveal the transient behavior of centrifugal pump in the process of decreasing flow rate, the finite volume method (FVM), RNG k-ε turbulence model, sliding mesh technology, and user-defined functions (UDF) were employed to simulate the three-dimensional unsteady viscous incompressible flow in a low-specific-speed centrifugal pump during the abrupt valve-off period. The results show that the differences are very obvious between transient and quasi-steady calculations. The velocity is maximum on the wall of hub and shroud, while the velocity is minimum and uniform distribution at middle positions. The transient flow field lags behind the quasi-steady flow field, which may be related to the reasons; namely, kinetic energy cannot convert pressure energy in time. |
| format | Article |
| id | doaj-art-b77bd0e4ef414503b5726e0ddcaa3f1d |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-b77bd0e4ef414503b5726e0ddcaa3f1d2025-08-20T03:39:29ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/55862065586206Transient Behavior of a Prototype Centrifugal Pump with Abrupt Decreasing Flow RateYan-Juan Zhao0Yu-Liang Zhang1College of Information Engineering, Quzhou College of Technology, Quzhou 324000, ChinaCollege of Mechanical Engineering, Quzhou University, Quzhou 324000, ChinaCentrifugal pump often operates at different working flow rates to meet engineering requirement. To better reveal the transient behavior of centrifugal pump in the process of decreasing flow rate, the finite volume method (FVM), RNG k-ε turbulence model, sliding mesh technology, and user-defined functions (UDF) were employed to simulate the three-dimensional unsteady viscous incompressible flow in a low-specific-speed centrifugal pump during the abrupt valve-off period. The results show that the differences are very obvious between transient and quasi-steady calculations. The velocity is maximum on the wall of hub and shroud, while the velocity is minimum and uniform distribution at middle positions. The transient flow field lags behind the quasi-steady flow field, which may be related to the reasons; namely, kinetic energy cannot convert pressure energy in time.http://dx.doi.org/10.1155/2021/5586206 |
| spellingShingle | Yan-Juan Zhao Yu-Liang Zhang Transient Behavior of a Prototype Centrifugal Pump with Abrupt Decreasing Flow Rate Shock and Vibration |
| title | Transient Behavior of a Prototype Centrifugal Pump with Abrupt Decreasing Flow Rate |
| title_full | Transient Behavior of a Prototype Centrifugal Pump with Abrupt Decreasing Flow Rate |
| title_fullStr | Transient Behavior of a Prototype Centrifugal Pump with Abrupt Decreasing Flow Rate |
| title_full_unstemmed | Transient Behavior of a Prototype Centrifugal Pump with Abrupt Decreasing Flow Rate |
| title_short | Transient Behavior of a Prototype Centrifugal Pump with Abrupt Decreasing Flow Rate |
| title_sort | transient behavior of a prototype centrifugal pump with abrupt decreasing flow rate |
| url | http://dx.doi.org/10.1155/2021/5586206 |
| work_keys_str_mv | AT yanjuanzhao transientbehaviorofaprototypecentrifugalpumpwithabruptdecreasingflowrate AT yuliangzhang transientbehaviorofaprototypecentrifugalpumpwithabruptdecreasingflowrate |