| Estimating Directional Distribution for Co-Existent Field of Incident and Reflected Waves |
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| 作者单位： | ZHAO Dongliang and GUAN Changlong Lecturer，Institute of Physical Oceanography，Ocean University of Qingdao，Qingdao 260003，China. Professor，Institute of Physical Oceanography，Ocean University of Qingdao，Qingdao 260003，China. |
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| 摘 要： | In the nearshore,the wave field contains reflected and incident waves in which there iscorrelation between their phases due to the effect of reflection by some obstacles.Based on the extendedeigenvector method(EEV)derived by Guan et al.,a modified method(MEEV)is proposed as a generaland practical approach to estimating directional spectra for the co-existent field of incident and reflectedwaves and a formula is given for direct calculation of the reflection coefficient.The results of numericalsimulations show that MEEV is superior to EEV in resolution power,and the computed reflectioncoefficient agrees well with the real value within a certain range of incident angle.
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Estimating Directional Distribution for Co-Existent Field of Incident and Reflected Waves |
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| Authors: | ZHAO Dongliang and GUAN Changlong Lecturer |
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| Institution: | ZHAO Dongliang and GUAN Changlong Lecturer,Institute of Physical Oceanography,Ocean University of Qingdao,Qingdao 260003,China. Professor,Institute of Physical Oceanography,Ocean University of Qingdao,Qingdao 260003,China. |
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| Abstract: | In the nearshore, the wave field contains reflected and incident waves in which there is correlation between their phases due to the effect of reflection by some obstacles. Based on the extended eigenvector method (EEV) derived by Guan et at., a modified method (MEEV) is proposed as a general and practical approach to estimating directional spectra for the co-existent field of incident and reflected waves and a formula is given for direct calculation of the reflection coefficient. The results of numerical simulations show that MEEV is superior to EEV in resolution power, and the computed reflection coefficient agrees well with the real value within a certain range of incident angle. |
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| Keywords: | directional spectra incident and refected waves extended eigenvector method refection coefficient |
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