Experimental Study on the Spanwise Correlation of Vortex-Induced Force Using Large-Scale Section Model
To investigate the spanwise correlation of vortex-induced forces (VIF) of a typical section of a streamlined box girder, wind tunnel tests of simultaneous measurement of force and displacement responses of a sectional model were conducted in a smooth flow. The spanwise correlation of VIF and pressur...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2021/5430985 |
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| _version_ | 1832549178934296576 |
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| author | Chunguang Li Yu Mao Yan Han Kai Li C.S. Cai |
| author_facet | Chunguang Li Yu Mao Yan Han Kai Li C.S. Cai |
| author_sort | Chunguang Li |
| collection | DOAJ |
| description | To investigate the spanwise correlation of vortex-induced forces (VIF) of a typical section of a streamlined box girder, wind tunnel tests of simultaneous measurement of force and displacement responses of a sectional model were conducted in a smooth flow. The spanwise correlation of VIF and pressure coefficients on the measurement points of an oscillating main deck were analyzed in both the time domain and frequency domain, respectively. The research results indicated that the spanwise correlation of VIF and pressure coefficients on the measurement points were related to the amplitudes of vortex-induced vibration (VIV), both of them weakened with the increase of spanwise distance; the maximum value of spanwise correlation coefficient is situated at the ascending stage of the lock-in region, rather than at the extreme amplitude point. The amplitudes of VIV showed different impacts on the spanwise correlation of pressure coefficients on the measurement points of the upper and lower surfaces, for which the maximum value of the spanwise correlation coefficients is located at the extreme amplitude point and the ascending stage of the lock-in region, respectively. Furthermore, the spanwise correlation of the pressure coefficients decreases continually from the upstream to downstream of the main deck; large coherence of vortex-induced forces and pressure appears around the frequency of vortex shedding, and the coherence of VIF and pressure becomes smaller with the increase in the spanwise distance. |
| format | Article |
| id | doaj-art-8e714f29631f4431b66186c17648bcf3 |
| 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-8e714f29631f4431b66186c17648bcf32025-02-03T06:11:59ZengWileyShock and Vibration1070-96221875-92032021-01-01202110.1155/2021/54309855430985Experimental Study on the Spanwise Correlation of Vortex-Induced Force Using Large-Scale Section ModelChunguang Li0Yu Mao1Yan Han2Kai Li3C.S. Cai4School of Civil Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, ChinaSchool of Civil Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, ChinaSchool of Civil Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, ChinaSchool of Civil Engineering, Changsha University of Science & Technology, Changsha, Hunan 410114, ChinaDepartment of Civil and Environmental Engineering, Louisiana State University, Baton Rouge, USATo investigate the spanwise correlation of vortex-induced forces (VIF) of a typical section of a streamlined box girder, wind tunnel tests of simultaneous measurement of force and displacement responses of a sectional model were conducted in a smooth flow. The spanwise correlation of VIF and pressure coefficients on the measurement points of an oscillating main deck were analyzed in both the time domain and frequency domain, respectively. The research results indicated that the spanwise correlation of VIF and pressure coefficients on the measurement points were related to the amplitudes of vortex-induced vibration (VIV), both of them weakened with the increase of spanwise distance; the maximum value of spanwise correlation coefficient is situated at the ascending stage of the lock-in region, rather than at the extreme amplitude point. The amplitudes of VIV showed different impacts on the spanwise correlation of pressure coefficients on the measurement points of the upper and lower surfaces, for which the maximum value of the spanwise correlation coefficients is located at the extreme amplitude point and the ascending stage of the lock-in region, respectively. Furthermore, the spanwise correlation of the pressure coefficients decreases continually from the upstream to downstream of the main deck; large coherence of vortex-induced forces and pressure appears around the frequency of vortex shedding, and the coherence of VIF and pressure becomes smaller with the increase in the spanwise distance.http://dx.doi.org/10.1155/2021/5430985 |
| spellingShingle | Chunguang Li Yu Mao Yan Han Kai Li C.S. Cai Experimental Study on the Spanwise Correlation of Vortex-Induced Force Using Large-Scale Section Model Shock and Vibration |
| title | Experimental Study on the Spanwise Correlation of Vortex-Induced Force Using Large-Scale Section Model |
| title_full | Experimental Study on the Spanwise Correlation of Vortex-Induced Force Using Large-Scale Section Model |
| title_fullStr | Experimental Study on the Spanwise Correlation of Vortex-Induced Force Using Large-Scale Section Model |
| title_full_unstemmed | Experimental Study on the Spanwise Correlation of Vortex-Induced Force Using Large-Scale Section Model |
| title_short | Experimental Study on the Spanwise Correlation of Vortex-Induced Force Using Large-Scale Section Model |
| title_sort | experimental study on the spanwise correlation of vortex induced force using large scale section model |
| url | http://dx.doi.org/10.1155/2021/5430985 |
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