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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 6 - MARITIME HYDRAULICS AND COASTAL ENGINEERING : Numerical Study of the Propagation of Non-breaking Waves Over Steep Seabed Slopes with a Double-? No...
Numerical Study of the Propagation of Non-breaking Waves Over Steep Seabed Slopes with a Double-? Non-Hydrostatic Model
Author : Oleksandr Nesterov
The propagation and transformation of non-breaking surface waves over steep seabed slopes such as drop-offs of a coastal shelf, coral reefs, man-made navigational canals, submerged obstacles with nearly vertical walls, is a topic of many research and engineering studies. However, a majority of the wave models dedicated to this problem focus on the description of one- or two-dimensional wave characteristics only and, hence, lack in the ability of analyzing three-dimensional hydrodynamic fields in detail. On the other hand, most of the existing three-dimensional ocean circulation models are based on the hydrostatic pressure approximation, which makes them incapable of the proper simulation of the dynamics of short-waves. To address the problem of non-hydrostatic flow modeling in the areas with steep changes in bathymetry, a three-dimensional free-surface non-hydrostatic double s-coordinate numerical model has been developed. Application of this model has shown a fairly good agreement with the laboratory investigation of a non-breaking solitary wave propagation over an artificial shelf installed in a flume. The model was also able to accurately reproduce vortices observed in laboratory experiments at the edges of a submerged rectangular obstacle, which were generated by a solitary wave passing over it. In both cases a good agreement with the measurements has been achieved by calibrating the bed roughness.
File Size : 1,595,919 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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