Radiation Boundary Conditions in Barotropic Coastal Ocean Numerical Models

✍ Scribed by Y. Tang; R. Grimshaw

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 405 KB
• Volume: 123
• Category: Article
• ISSN: 0021-9991
• DOI: 10.1006/jcph.1996.0008

✦ Synopsis

Using a barotropic coastal ocean numerical model, several radiation boundary conditions at the open boundaries of the computa-more wave modes may approach the boundary simultaneously tional domain are examined. The focus is on how well they can and, second, the waves generally have the form of dispersing transmit coastally trapped waves. As well as radiation boundary wave packets. Both these factors imply that the phase speed conditions of the Orlanski type, three new modifications are introof the waves is not necessarily known in advance, and hence duced and found to give a better performance. ᮊ 1996 Academic the radiation boundary conditions we consider are of the type Press, Inc. introduced by Orlanski [3] (see the discussion below following (1.3)). 96