| 规则波浪与强逆流作用的实验研究 |
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| 引用本文： | 许建武,马小舟,马玉祥,董国海.规则波浪与强逆流作用的实验研究[J].计算力学学报,2009,26(6):817-822. |
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| 作者姓名： | 许建武 马小舟 马玉祥 董国海 |
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| 作者单位： | 大连理工大学,海岸和近海工程国家重点实验室,大连,116023 |
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| 基金项目： | 教育部新世纪优秀人才支持计划，国家自然科学基金 |
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| 摘 要： | 针对规则波浪在强逆流作用下的阻塞现象进行实验研究,给出了不同波况下的波高与周期沿水槽的变化.实验结果表明,波浪的频率越低,所需的阻塞流速越强;波幅离散对阻塞的影响很大,不能被忽略;对于较大的入射波高,边带不稳定性会使波浪发生频率下移,进而增大阻塞所需的流速.
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| 关 键 词： | 波流相互作用 波浪阻塞 边带不稳定性 频率下移 |
| 收稿时间： | 2008/1/12 0:00:00 |
Experimental study of regular wave blocking on opposing currents |
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| XU Jian-wu,MA Xiao-zhou,MA Yu-xiang and DONG Guo-hai.Experimental study of regular wave blocking on opposing currents[J].Chinese Journal of Computational Mechanics,2009,26(6):817-822. |
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| Authors: | XU Jian-wu MA Xiao-zhou MA Yu-xiang and DONG Guo-hai |
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| Institution: | State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China;State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China;State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China;State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China |
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| Abstract: | A series of experiments on regular waves blocked by opposing currents are presented in this paper. The data prove that longer waves require stronger blocking currents. It is observed that amplitude dispersion plays a critical role in wave blocking and can not be ignored. A frequency downshift due to the sideband instability is observed with increasing amplitude, which greatly affects the transformation of waves and prevents wave blocking. |
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| Keywords: | wave-current interaction wave blocking sideband instability frequency downshift |
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