Axial Spacing Effects on Rotor-Rotor Interaction Noise and Vibration in a Contra-Rotating Fan
Because of the potential technical advantages, the contra-rotation technology has become a renewed interest in aviation and other applications. Contra-rotation increases efficiency in comparison with the single-rotor design, but this advantage is not fully harnessed. The axial spacing of two-stage c...
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| Format: | Article |
| Language: | English |
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Wiley
2019-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2019/2125976 |
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| _version_ | 1832565385751166976 |
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| author | Hengxuan Luan Liyuan Weng Ranhui Liu Dongmin Li Mingwei Wang |
| author_facet | Hengxuan Luan Liyuan Weng Ranhui Liu Dongmin Li Mingwei Wang |
| author_sort | Hengxuan Luan |
| collection | DOAJ |
| description | Because of the potential technical advantages, the contra-rotation technology has become a renewed interest in aviation and other applications. Contra-rotation increases efficiency in comparison with the single-rotor design, but this advantage is not fully harnessed. The axial spacing of two-stage contra-rotating blade rows has a significant impact on a contra-rotating fan/compressor. The results show that with a contra-rotation pattern, the strong unsteadiness of two-stage rotors is caused by the rotor-rotor interaction. The unsteadiness of rotor 1 is caused by the potential disturbance, and the upstream wake leads to the strong unsteadiness of rotor 2. With the increase of axial spacing, the rotor-rotor interaction is weakened, while unsteady features of two-stage rotor blades tend to be consistent. The acoustic and vibration effects of axial spacing are studied. It is found that the axial spacing has great influence of aerodynamic noise. The mean value of sound pressure level decreases by 17.2 dB in total when the axial spacing increased to 1.1 chord from 0.3 chord. For the accuracy of calculation, the scattering effect of the casing wall should be considered in the prediction of the noise. The axial spacing does not have obvious effects on the natural frequencies of the two-stage rotor blades but has certain effect on blade deformation. |
| format | Article |
| id | doaj-art-661280e2671f47d1b7313d717445823b |
| institution | Kabale University |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-661280e2671f47d1b7313d717445823b2025-02-03T01:07:49ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742019-01-01201910.1155/2019/21259762125976Axial Spacing Effects on Rotor-Rotor Interaction Noise and Vibration in a Contra-Rotating FanHengxuan Luan0Liyuan Weng1Ranhui Liu2Dongmin Li3Mingwei Wang4Department of Mechanical & Electronic Engineering, Shandong University of Science and Technology, Taian, ChinaCollege of Geomatics, Shandong University of Science and Technology, Qingdao, ChinaDepartment of Mechanical & Electronic Engineering, Shandong University of Science and Technology, Taian, ChinaDepartment of Mechanical & Electronic Engineering, Shandong University of Science and Technology, Taian, ChinaShandong Taikai Electric Automation Co., Ltd, Taian, ChinaBecause of the potential technical advantages, the contra-rotation technology has become a renewed interest in aviation and other applications. Contra-rotation increases efficiency in comparison with the single-rotor design, but this advantage is not fully harnessed. The axial spacing of two-stage contra-rotating blade rows has a significant impact on a contra-rotating fan/compressor. The results show that with a contra-rotation pattern, the strong unsteadiness of two-stage rotors is caused by the rotor-rotor interaction. The unsteadiness of rotor 1 is caused by the potential disturbance, and the upstream wake leads to the strong unsteadiness of rotor 2. With the increase of axial spacing, the rotor-rotor interaction is weakened, while unsteady features of two-stage rotor blades tend to be consistent. The acoustic and vibration effects of axial spacing are studied. It is found that the axial spacing has great influence of aerodynamic noise. The mean value of sound pressure level decreases by 17.2 dB in total when the axial spacing increased to 1.1 chord from 0.3 chord. For the accuracy of calculation, the scattering effect of the casing wall should be considered in the prediction of the noise. The axial spacing does not have obvious effects on the natural frequencies of the two-stage rotor blades but has certain effect on blade deformation.http://dx.doi.org/10.1155/2019/2125976 |
| spellingShingle | Hengxuan Luan Liyuan Weng Ranhui Liu Dongmin Li Mingwei Wang Axial Spacing Effects on Rotor-Rotor Interaction Noise and Vibration in a Contra-Rotating Fan International Journal of Aerospace Engineering |
| title | Axial Spacing Effects on Rotor-Rotor Interaction Noise and Vibration in a Contra-Rotating Fan |
| title_full | Axial Spacing Effects on Rotor-Rotor Interaction Noise and Vibration in a Contra-Rotating Fan |
| title_fullStr | Axial Spacing Effects on Rotor-Rotor Interaction Noise and Vibration in a Contra-Rotating Fan |
| title_full_unstemmed | Axial Spacing Effects on Rotor-Rotor Interaction Noise and Vibration in a Contra-Rotating Fan |
| title_short | Axial Spacing Effects on Rotor-Rotor Interaction Noise and Vibration in a Contra-Rotating Fan |
| title_sort | axial spacing effects on rotor rotor interaction noise and vibration in a contra rotating fan |
| url | http://dx.doi.org/10.1155/2019/2125976 |
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