Accession Number ADA578430
Title Modeling Combined Diffraction-Refraction in a Coastal Spectral Wave Model.
Publication Date Jun 2012
Media Count 9p
Personal Author L. Lin Z. Demirbilek
Abstract This paper describes the derivation and implementation of combined wave diffraction-refraction in a spectral directional wave model for coastal applications. The wave refraction is included in the total derivative of wave- action while diffraction is formulated as wave energy diffusion in the wave- action balance equation. The combined diffraction-refraction model equation conserves the total wave-action under no net energy gain or loss. The numerical solution scheme for the model equation is simple and computation is stable. The method is demonstrated in a two-dimensional (2D) steady-state spectral model for a long wedge, an idealized shoal and a coastal harbor physical model.
Keywords Coastal regions
Diffraction
Equations
Formulations
Idealized elliptic shoals
Infinite wedges
Modeling
Numerical methods and procedures
Refraction
Spectrum
Water waves


 
Source Agency Non Paid ADAS
NTIS Subject Category 48G - Hydrology & Limnology
72B - Algebra, Analysis, Geometry, & Mathematical Logic
46C - Optics & Lasers
Corporate Author Army Engineer Waterways Experiment Station, Vicksburg, MS. Engineer Research and Development Center.
Document Type Technical report
Title Note Conference paper.
NTIS Issue Number 1321
Contract Number N/A

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