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Open Boundary Conditions in Parabolic Approximation Model  

Seo, Seung-Nam (Coastal Engineering Research Department, KORDI)
Lee, Dong-Young (Coastal Engineering Research Department, KORDI)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.19, no.2, 2007 , pp. 170-178 More about this Journal
Abstract
Most of parabolic approximation models employ a relatively limited open boundary condition in which there is no depth variation in the longshore direction outside of the computation domain so that Snell's law may be presumed to hold. Existing Kirby's condition belongs to this category and in the paper both modified Kirby's method and Dirichlet boundary condition are presented in detail and numerical results of three methods were shown. Judging from computation to wave propagations over a circular shoal in a constant depth, the method based on present Dirichlet boundary condition with fictitious numerical adjusting regions in both sides of the computation domain gives the least distorted amplitude ratio distribution.
Keywords
parabolic approximate form; numerical model; circular shoal; Snell's law; open boundary condition;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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