File:Combined reflection and diffraction by a vertical wedge (1987) (20478200008).jpg

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Title: Combined reflection and diffraction by a vertical wedge
Identifier: combinedreflecti00chen (find matches)
Year: 1987 (1980s)
Authors: Chen, Hsuan Shan; U. S. Army Engineer Waterways Experiment Station; Coastal Engineering Research Center (U. S. ); United States. Army. Corps of Engineers
Subjects: Waves; Breakwaters; Hydrodynamics
Publisher: Vicksburg, Miss. : U. S. Army Engineer Waterways Experiment Station ; Springfield, Va. : available from National Technical Information Service
Contributing Library: MBLWHOI Library
Digitizing Sponsor: Boston Library Consortium Member Libraries

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Figure 4. Amplification factor diagram for the thin semi-infinite breakwater for incident wave angle = 0 deg and III (as defined in Figure 2) where the reflected wave is absent, the am- plification factor is essentially the diffraction coefficient as defined in the SPM. 26. Figures 4 through 15 reveal that the amplification factors in sub- region I change very rapidly between 0 and 2.35 over the subregion, and the diagram patterns become very complex because of the interesting superposition of the incident, reflected, and scattered waves. (In the legend of Figures 4 through 15, the width of the pixel is one incident wave length, and the values are amplification factors.) Such patterns would be very difficult to con- struct without using a high-speed computer and computer graphics. In sub- regions II and III, the amplification factors change smoothly from 1.15 roughly along the reflected wave ray reflected from the origin point to nearly 15

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