| A Linear Theory for Wave Scattering by Double Slotted Barriers in Weak Steady Currents |
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| 作者单位： | Zhenhua HUANG a，1 and Chunrong LIU b，ca School of Civil and Environmental Engineering，Nanyang Technological University，639798，Singaporeb College of Mechanics and Aerospace，Hunan University，Changsha 410082，ChinacMaritime Research Center，School of Civil and Environmental Engineering，Nanyang Technological University，639798，Singapore |
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| 基金项目： | This work was financially supported by the Nanyang Technological University, Singapore （Grant No. SUG 03/07） |
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| 摘 要： | Recent experimental results have shown that the presence of a steady current can significantly reduce the energy of transmitted waves. In this paper, a theory is developed to study the wave scattering by single or double vertical slotted barriers in the presence of a weak uniform current. The quasi-linear theory is based on an eigenfunction expansion method. Comparisons between theory and existing experimental results for both single slotted barrier and double slotted barriers show satisfactory agreements. In consideration of wave propagation in a weak current it is found that the friction factor used to characterize the head loss at the slotted barrier depends on both the geometry of the slotted barrier and the strength of the steady current.
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| 关 键 词： | 表面波 表面散射 挡浪板 双槽屏障 |
A Linear Theory for Wave Scattering by Double Slotted Barriers in Weak Steady Currents |
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| Authors: | Zhenhua HUANG Chunrong LIU |
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| Institution: | [1]School of Civil and Environmental Engineering, Nanyang Technological University,639798, Singapore [2]College of Mechanics and Aerospace, Hunan University, Changsha 410082, China [3]Maritime Research Center, School of Civil and Environmental Engineering, Nanyang Technological University, 639798, Singapore |
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| Abstract: | Recent experimental results have shown that the presence of a steady current can significantly reduce the energy of transmitted waves. In this paper, a theory is developed to study the wave scattering by single or double vertical slotted barriers in the presence of a weak uniform current. The quasi-linear theory is based on an eigenfunction expansion method. Comparisons between theory and existing experimental results for both single slotted barrier and double slotted barriers show satisfactory agreements. In consideration of wave propagation in a weak current it is found that the friction factor used to characterize the head loss at the slotted barrier depends on both the geometry of the slotted barrier and the strength of the steady current. |
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| Keywords: | surface waves wave scattering breakwaters wave-current interactions |
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