Abstract
High-resolution two- and three-dimensional numerical simulations are performed of first-mode internal gravity waves interacting with a shelf break in a linearly stratified fluid. The interaction of nonlinear incident waves with the shelf break results in the formation of upslope-surging vortex cores of dense fluid (referred to here as internal boluses) that propagate onto the shelf. This paper primarily focuses on understanding the dynamics of the interaction process with particular emphasis on the formation, structure and propagation of internal boluses on shelf. A possible mechanism is identified for the excitation of vortex cores that are lifted over the shelf break, from where (from the simplest viewpoint) they essentially propagate as gravity currents into a linearly stratified ambient fluid. © 2007 Cambridge University Press.
Recommended Citation
S. K. Venayagamoorthy and O. B. Fringer, "On the Formation and Propagation of Nonlinear Internal Boluses Across a Shelf Break," Journal of Fluid Mechanics, vol. 577, pp. 137 - 159, Cambridge University Press, Apr 2007.
The definitive version is available at https://doi.org/10.1017/S0022112007004624
Department(s)
Civil, Architectural and Environmental Engineering
International Standard Serial Number (ISSN)
1469-7645; 0022-1120
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2025 Cambridge University Press, All rights reserved.
Publication Date
25 Apr 2007
Comments
Office of Naval Research, Grant N00014-05-1-0294