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论文类型：期刊论文

发表时间：2016-01-01

发表刊物：Scientia Sinica: Physica, Mechanica et Astronomica

收录刊物：PKU、ISTIC、Scopus

卷号：46

期号：2

页面范围：024701-1-024701-14

ISSN号：16747275

摘要：We studied the wave-dissipating performances of the twin-plate breakwater under the consideration of incident wave angle, relative plate width and relative wave height based on physical model tests. Comparisons were, hence, made about the influences of these considered factors on the wave patterns in the fluid regimes at the front and back of a breakwater, refection coefficient, transmission coefficient and energy attenuation coefficient as well. As the models tests indicated, oblique incident waves produced different wave patterns in the two-sided fluid regimes of the multiple-layer breakwater significantly compared with positive incidents waves, after when the waves propagated through the breakwater: with the conditions showing as the relative plate width B/L  0.5 and the incident wave angle   0  30  , the waves at the front of the breakwater were typical 3D waves with a scattering angle range of 60  -90   of the wave energy direction, yet the main direction remained broadly consistent with that of the incident waves. However, the main wave direction of the waves at the back of the breakwater deviated from the direction of the incident wave, which manifested the wave refraction occurred in this case. When it came to   0  45  , the main wave energy direction could be scattered over 90  . Here, the wave energy attenuation coefficient (energy loss) decreased while the reflection coefficient raised, when we compared the oblique with the positive incidents waves, and the transmission coefficients had a difference of about   15%. The optimum angle for the best wave-dissipating performances of the twin-plate breakwater was found to be 30  , considering the tests   conditions (e.g., the wave angle is 0  -60  ). ? 2016, Chinese Academy of Sciences. All rights reserved.