Journal
COASTAL ENGINEERING
Volume 88, Issue -, Pages 33-42Publisher
ELSEVIER
DOI: 10.1016/j.coastaleng.2014.01.013
Keywords
Water wave scattering; Stepwise approximation; Transfer matrix; Evanescent modes; Reflection coefficient
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Funding
- Korean Government MOF research grant Development of Korea Operational Oceanographic System, Phase 2
- KIOST projects, Development of Mooring Anchor for Artificial Island at Near Shore
- KIOST projects Stepwise Approximation for Linear Wave Scattering
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For a two-dimensional linear wave scattering problem, a new transfer matrix incorporating evanescent modes is developed, from which the solution of a scattered wave field over a stepwise topography is directly obtained. The present method is shown to be capable of solving practical scattering problems with complicated bedforms, for which application of the conventional methods has been fairly limited. Highly accurate numerical solutions for sufficiently large systems are presented, and the computational efficiency of the present method is demonstrated. The interaction of bars in periodic beds is examined, and changes in the reflection coefficient with increasing number of bars are illustrated. (C) 2014 Elsevier B.V. All rights reserved.
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