A Modified Wake Oscillator Model for the Cross-Flow Vortex-Induced Vibration of Rigid Cylinders with Low Mass and Damping Ratios
The classical wake oscillator model is capable of predicting the vortex-induced vibration response of a cylinder at high mass-damping ratios, but it fails to perform satisfactorily at low mass-damping ratios. A modified wake oscillator model is presented in this paper. The modification method involv...
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MDPI AG
2023-01-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/11/2/235 |
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| author | Xiulin Zhang Xu Zhang Shuni Zhou Wenzha Yang Liangbin Xu Lina Yi Gengqing Tian Yong Ma Yuheng Hao Wenchi Ni |
| author_facet | Xiulin Zhang Xu Zhang Shuni Zhou Wenzha Yang Liangbin Xu Lina Yi Gengqing Tian Yong Ma Yuheng Hao Wenchi Ni |
| author_sort | Xiulin Zhang |
| collection | DOAJ |
| description | The classical wake oscillator model is capable of predicting the vortex-induced vibration response of a cylinder at high mass-damping ratios, but it fails to perform satisfactorily at low mass-damping ratios. A modified wake oscillator model is presented in this paper. The modification method involves analyzing the variation law of the add mass coefficient of the cylinder versus reduced velocity and expressing the reference lift coefficient <i>C<sub>L</sub></i><sub>0</sub> as a function of the add mass coefficient. The modified wake oscillator model has been demonstrated to have better accuracy in capturing maximum amplitudes and flow velocity at low mass-damping ratios. However, the modified model at present form is unable to accurately predict the vortex-induced vibration response at high damping ratios. The purpose of this paper is to propose a new modification idea. In order to achieve better results when applying this modification idea to particular objects, it may be necessary to first understand the response law of these kinds of objects. |
| first_indexed | 2024-03-11T08:36:45Z |
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| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-11T08:36:45Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
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| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-b528377c62bd4400ab12de398b07a0302023-11-16T21:26:22ZengMDPI AGJournal of Marine Science and Engineering2077-13122023-01-0111223510.3390/jmse11020235A Modified Wake Oscillator Model for the Cross-Flow Vortex-Induced Vibration of Rigid Cylinders with Low Mass and Damping RatiosXiulin Zhang0Xu Zhang1Shuni Zhou2Wenzha Yang3Liangbin Xu4Lina Yi5Gengqing Tian6Yong Ma7Yuheng Hao8Wenchi Ni9CNOOC China Ltd., Zhanjiang 524057, ChinaSchool of Marine Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, ChinaGuangdong Haizhuang Offshore Windpower Research Center Company Limited, Zhanjiang 524030, ChinaSchool of Marine Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, ChinaSchool of Marine Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, ChinaSchool of Marine Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, ChinaSchool of Marine Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, ChinaSchool of Marine Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, ChinaGuangdong Haizhuang Offshore Windpower Research Center Company Limited, Zhanjiang 524030, ChinaSchool of Marine Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, ChinaThe classical wake oscillator model is capable of predicting the vortex-induced vibration response of a cylinder at high mass-damping ratios, but it fails to perform satisfactorily at low mass-damping ratios. A modified wake oscillator model is presented in this paper. The modification method involves analyzing the variation law of the add mass coefficient of the cylinder versus reduced velocity and expressing the reference lift coefficient <i>C<sub>L</sub></i><sub>0</sub> as a function of the add mass coefficient. The modified wake oscillator model has been demonstrated to have better accuracy in capturing maximum amplitudes and flow velocity at low mass-damping ratios. However, the modified model at present form is unable to accurately predict the vortex-induced vibration response at high damping ratios. The purpose of this paper is to propose a new modification idea. In order to achieve better results when applying this modification idea to particular objects, it may be necessary to first understand the response law of these kinds of objects.https://www.mdpi.com/2077-1312/11/2/235wake oscillator modellow mass-damping ratiovortex-induced vibration (VIV)added massreference lift coefficient |
| spellingShingle | Xiulin Zhang Xu Zhang Shuni Zhou Wenzha Yang Liangbin Xu Lina Yi Gengqing Tian Yong Ma Yuheng Hao Wenchi Ni A Modified Wake Oscillator Model for the Cross-Flow Vortex-Induced Vibration of Rigid Cylinders with Low Mass and Damping Ratios Journal of Marine Science and Engineering wake oscillator model low mass-damping ratio vortex-induced vibration (VIV) added mass reference lift coefficient |
| title | A Modified Wake Oscillator Model for the Cross-Flow Vortex-Induced Vibration of Rigid Cylinders with Low Mass and Damping Ratios |
| title_full | A Modified Wake Oscillator Model for the Cross-Flow Vortex-Induced Vibration of Rigid Cylinders with Low Mass and Damping Ratios |
| title_fullStr | A Modified Wake Oscillator Model for the Cross-Flow Vortex-Induced Vibration of Rigid Cylinders with Low Mass and Damping Ratios |
| title_full_unstemmed | A Modified Wake Oscillator Model for the Cross-Flow Vortex-Induced Vibration of Rigid Cylinders with Low Mass and Damping Ratios |
| title_short | A Modified Wake Oscillator Model for the Cross-Flow Vortex-Induced Vibration of Rigid Cylinders with Low Mass and Damping Ratios |
| title_sort | modified wake oscillator model for the cross flow vortex induced vibration of rigid cylinders with low mass and damping ratios |
| topic | wake oscillator model low mass-damping ratio vortex-induced vibration (VIV) added mass reference lift coefficient |
| url | https://www.mdpi.com/2077-1312/11/2/235 |
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