Modulation effect on rotor-stator interaction subjected to fluctuating rotation speed in a centrifugal pump
In the paper, the modulation effect of rotor-stator interaction subjected to fluctuating rotation speed is investigated numerically. A quasi-bivariate variable mode decomposition method for analyzing non-stationary flow fields is proposed for the first time. Different from the previous studies, this...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2023-12-01
|
| Series: | Engineering Applications of Computational Fluid Mechanics |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/19942060.2022.2163703 |
| _version_ | 1797403927269867520 |
|---|---|
| author | Shiwei Ni Guofeng Zhao Yuxuan Chen Haifeng Cao Chenxing Jiang Wei Zhou Tao Yu Zhijun Shuai |
| author_facet | Shiwei Ni Guofeng Zhao Yuxuan Chen Haifeng Cao Chenxing Jiang Wei Zhou Tao Yu Zhijun Shuai |
| author_sort | Shiwei Ni |
| collection | DOAJ |
| description | In the paper, the modulation effect of rotor-stator interaction subjected to fluctuating rotation speed is investigated numerically. A quasi-bivariate variable mode decomposition method for analyzing non-stationary flow fields is proposed for the first time. Different from the previous studies, this paper emphasizes the local features of the transient flow field at fluctuating rotation speed. The results show that the impact of fluctuating rotation speed on the impeller force is limited, but it significantly impacts the pressure pulsation at fluctuating frequency. The correlation between amplitude and fluctuation ratio is positive. Meanwhile, the fluctuating rotation speed also induces sidebands centered on the blade passing frequency and its harmonics. The periodic changes in rotational speed lead to frequency and amplitude modulation of pressure pulsations. The magnitude of the instantaneous frequency and amplitude increases as the fluctuation ratio grows. The change in pressure field is well synchronized with the rotational speed, while the change in velocity field lags behind the rotational speed. The variation of pressure field with rotational speed is mainly attributed to two aspects. One is the flow structure at the fluctuating frequency, and the other is the instantaneous component of the flow structure at blade passing frequency. |
| first_indexed | 2024-03-09T02:46:33Z |
| format | Article |
| id | doaj.art-b11f1a3294aa41efa3fe8280ace19606 |
| institution | Directory Open Access Journal |
| issn | 1994-2060 1997-003X |
| language | English |
| last_indexed | 2024-03-09T02:46:33Z |
| publishDate | 2023-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Engineering Applications of Computational Fluid Mechanics |
| spelling | doaj.art-b11f1a3294aa41efa3fe8280ace196062023-12-05T16:53:43ZengTaylor & Francis GroupEngineering Applications of Computational Fluid Mechanics1994-20601997-003X2023-12-0117110.1080/19942060.2022.2163703Modulation effect on rotor-stator interaction subjected to fluctuating rotation speed in a centrifugal pumpShiwei Ni0Guofeng Zhao1Yuxuan Chen2Haifeng Cao3Chenxing Jiang4Wei Zhou5Tao Yu6Zhijun Shuai7College of Energy, Xiamen University, Xiamen, People’s Republic of ChinaCollege of Energy, Xiamen University, Xiamen, People’s Republic of ChinaCollege of Energy, Xiamen University, Xiamen, People’s Republic of ChinaCollege of Energy, Xiamen University, Xiamen, People’s Republic of ChinaCollege of Energy, Xiamen University, Xiamen, People’s Republic of ChinaSchool of Aerospace Engineering, Xiamen University, Xiamen, People’s Republic of ChinaCollege of Power and Energy Engineering, Harbin Engineering University, Harbin, People’s Republic of ChinaCollege of Power and Energy Engineering, Harbin Engineering University, Harbin, People’s Republic of ChinaIn the paper, the modulation effect of rotor-stator interaction subjected to fluctuating rotation speed is investigated numerically. A quasi-bivariate variable mode decomposition method for analyzing non-stationary flow fields is proposed for the first time. Different from the previous studies, this paper emphasizes the local features of the transient flow field at fluctuating rotation speed. The results show that the impact of fluctuating rotation speed on the impeller force is limited, but it significantly impacts the pressure pulsation at fluctuating frequency. The correlation between amplitude and fluctuation ratio is positive. Meanwhile, the fluctuating rotation speed also induces sidebands centered on the blade passing frequency and its harmonics. The periodic changes in rotational speed lead to frequency and amplitude modulation of pressure pulsations. The magnitude of the instantaneous frequency and amplitude increases as the fluctuation ratio grows. The change in pressure field is well synchronized with the rotational speed, while the change in velocity field lags behind the rotational speed. The variation of pressure field with rotational speed is mainly attributed to two aspects. One is the flow structure at the fluctuating frequency, and the other is the instantaneous component of the flow structure at blade passing frequency.https://www.tandfonline.com/doi/10.1080/19942060.2022.2163703Computational fluid dynamicscentrifugal pumpfluctuating rotating speedrotor-stator interactionvariational mode decomposition |
| spellingShingle | Shiwei Ni Guofeng Zhao Yuxuan Chen Haifeng Cao Chenxing Jiang Wei Zhou Tao Yu Zhijun Shuai Modulation effect on rotor-stator interaction subjected to fluctuating rotation speed in a centrifugal pump Engineering Applications of Computational Fluid Mechanics Computational fluid dynamics centrifugal pump fluctuating rotating speed rotor-stator interaction variational mode decomposition |
| title | Modulation effect on rotor-stator interaction subjected to fluctuating rotation speed in a centrifugal pump |
| title_full | Modulation effect on rotor-stator interaction subjected to fluctuating rotation speed in a centrifugal pump |
| title_fullStr | Modulation effect on rotor-stator interaction subjected to fluctuating rotation speed in a centrifugal pump |
| title_full_unstemmed | Modulation effect on rotor-stator interaction subjected to fluctuating rotation speed in a centrifugal pump |
| title_short | Modulation effect on rotor-stator interaction subjected to fluctuating rotation speed in a centrifugal pump |
| title_sort | modulation effect on rotor stator interaction subjected to fluctuating rotation speed in a centrifugal pump |
| topic | Computational fluid dynamics centrifugal pump fluctuating rotating speed rotor-stator interaction variational mode decomposition |
| url | https://www.tandfonline.com/doi/10.1080/19942060.2022.2163703 |
| work_keys_str_mv | AT shiweini modulationeffectonrotorstatorinteractionsubjectedtofluctuatingrotationspeedinacentrifugalpump AT guofengzhao modulationeffectonrotorstatorinteractionsubjectedtofluctuatingrotationspeedinacentrifugalpump AT yuxuanchen modulationeffectonrotorstatorinteractionsubjectedtofluctuatingrotationspeedinacentrifugalpump AT haifengcao modulationeffectonrotorstatorinteractionsubjectedtofluctuatingrotationspeedinacentrifugalpump AT chenxingjiang modulationeffectonrotorstatorinteractionsubjectedtofluctuatingrotationspeedinacentrifugalpump AT weizhou modulationeffectonrotorstatorinteractionsubjectedtofluctuatingrotationspeedinacentrifugalpump AT taoyu modulationeffectonrotorstatorinteractionsubjectedtofluctuatingrotationspeedinacentrifugalpump AT zhijunshuai modulationeffectonrotorstatorinteractionsubjectedtofluctuatingrotationspeedinacentrifugalpump |