A model for obliquely incident wave interacting with a multi-layered object. (June 2019)

• Record Type: Journal Article
• Authors: Hu, Jie; Zhao, Yang; Liu, Philip L.-F.
• Is Part Of: Applied ocean research. Volume 87(2019)
• Page Start: 211
• Page End: 222
• Publication Date: 2019-06
• Subjects: Multi-layered permeable breakwater -- Obliquely incident wave -- BEM method -- Reflection/transmission coefficient -- Potential decomposition -- Aquaculture; Ocean engineering -- Periodicals; 620.416205
• DOI: 10.1016/j.apor.2019.03.004
• Languages: English
• ISSNs: 0141-1187

Abstract

Abstract: This paper presents an analytical solution for scattering of oblique incident, small amplitude, monochromatic wave trains by a stationary rigid multi-layered objects with rectangular cross-section. The object is infinite long and consists of multilayers, which can be either solid or permeable. This paper extends the previous work by Hu and Liu[1] from normal incident wave condition with a special object configuration to oblique incident waves with multi-layered object. The present model is validated with several existing solutions for normal/oblique waves interacting with a single object; excellent agreement is observed. New numerical results are presented to investigate the effects of incidence angle on reflection, transmission and energy loss coefficients for a combined floating and bottom-mounted permeable breakwater. A new floating board-cage breakwater is developed from the present model and its solutions are discussed in detail. A computer program, AWAS-P, has been updated so that it is applicable for both oblique and normal incident waves, while the object is multi-layered.