Steady-Suction-Based Flow Control of Flutter of Long-Span Bridge
The present wind tunnel study focuses on the effects of the steady-suction-based flow control method on the flutter performance of a 2DOF bridge deck section model. The suction applied to the bridge model was released from slots located at the girder bottom. The suction rates of all slots along the...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/4/1372 |
| _version_ | 1818128383573229568 |
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| author | Jian Zhan Hongfu Zhang Zhiwen Liu Huan Liu Dabo Xin Jinping Ou |
| author_facet | Jian Zhan Hongfu Zhang Zhiwen Liu Huan Liu Dabo Xin Jinping Ou |
| author_sort | Jian Zhan |
| collection | DOAJ |
| description | The present wind tunnel study focuses on the effects of the steady-suction-based flow control method on the flutter performance of a 2DOF bridge deck section model. The suction applied to the bridge model was released from slots located at the girder bottom. The suction rates of all slots along the span were equal and constant. A series of test cases with different combinations of suction slot positions, suction intervals, and suction rates were studied in detail for the bridge deck model. The experimental results showed that the steady-suction-based flow control method could improve the flutter characteristics of the bridge deck with a maximal increase in the critical flutter speed of up to 10.5%. In addition, the flutter derivatives (FDs) of the bridge deck with or without control were compared to investigate the fundamental mechanisms of the steady-suction-based control method. According to the results, installing a suction control device helps to strengthen aerodynamic damping, which is the primary cause for enhanced flutter performance of bridge decks. |
| first_indexed | 2024-12-11T07:32:23Z |
| format | Article |
| id | doaj.art-a929220b4f9c452cb27d3ca4cfd89336 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-12-11T07:32:23Z |
| publishDate | 2020-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-a929220b4f9c452cb27d3ca4cfd893362022-12-22T01:15:46ZengMDPI AGApplied Sciences2076-34172020-02-01104137210.3390/app10041372app10041372Steady-Suction-Based Flow Control of Flutter of Long-Span BridgeJian Zhan0Hongfu Zhang1Zhiwen Liu2Huan Liu3Dabo Xin4Jinping Ou5School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Civil Engineering, Northeast Forestry University, Harbin 150040, ChinaHunan Provincial Key Lab for Wind Engineering & Bridge Engineering, Hunan University, Changsha 410082, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaSchool of Civil Engineering, Northeast Forestry University, Harbin 150040, ChinaSchool of Civil Engineering, Harbin Institute of Technology, Harbin 150090, ChinaThe present wind tunnel study focuses on the effects of the steady-suction-based flow control method on the flutter performance of a 2DOF bridge deck section model. The suction applied to the bridge model was released from slots located at the girder bottom. The suction rates of all slots along the span were equal and constant. A series of test cases with different combinations of suction slot positions, suction intervals, and suction rates were studied in detail for the bridge deck model. The experimental results showed that the steady-suction-based flow control method could improve the flutter characteristics of the bridge deck with a maximal increase in the critical flutter speed of up to 10.5%. In addition, the flutter derivatives (FDs) of the bridge deck with or without control were compared to investigate the fundamental mechanisms of the steady-suction-based control method. According to the results, installing a suction control device helps to strengthen aerodynamic damping, which is the primary cause for enhanced flutter performance of bridge decks.https://www.mdpi.com/2076-3417/10/4/1372steady-suction-based controlbridge flutterwind tunnel testflutter control |
| spellingShingle | Jian Zhan Hongfu Zhang Zhiwen Liu Huan Liu Dabo Xin Jinping Ou Steady-Suction-Based Flow Control of Flutter of Long-Span Bridge Applied Sciences steady-suction-based control bridge flutter wind tunnel test flutter control |
| title | Steady-Suction-Based Flow Control of Flutter of Long-Span Bridge |
| title_full | Steady-Suction-Based Flow Control of Flutter of Long-Span Bridge |
| title_fullStr | Steady-Suction-Based Flow Control of Flutter of Long-Span Bridge |
| title_full_unstemmed | Steady-Suction-Based Flow Control of Flutter of Long-Span Bridge |
| title_short | Steady-Suction-Based Flow Control of Flutter of Long-Span Bridge |
| title_sort | steady suction based flow control of flutter of long span bridge |
| topic | steady-suction-based control bridge flutter wind tunnel test flutter control |
| url | https://www.mdpi.com/2076-3417/10/4/1372 |
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