Dynamic Coupling of Wave and Surge Models by Eulerian-Lagrangian Method
Publication: Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 123, Issue 1
Abstract
An Eulerian-Lagrangian method is employed in a third-generation ocean wave model and a two-dimensional storm surge model that are dynamically coupled. The stability, accuracy, and consistency of the synchronously coupled models are first verified using an idealized case of waves on a Gulf Stream Ring by comparing the computed results with that by others. Application of the coupled models to two hindcastings of storms occurred in the northern South China Sea under different forcing conditions, taking into account the mutual influences of waves and currents, gives satisfactory results in comparison with observations. Calculations show that the surface wave-dependent drag has significant effects on the surges, but the wave radiation stress has only slight effects. For prediction of wave heights, the inclusion of both the wave-dependent drag and the wave radiation stress in the storm surge model has a very small effect on the computed results. The coupled models can be easily applied to prediction or hindcasting of ocean waves and storm surges without the need for further treatment.
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Published In
Journal of Waterway, Port, Coastal, and Ocean Engineering
Volume 123 • Issue 1 • January 1997
Pages: 1 - 7
Copyright
Copyright © 1997 American Society of Civil Engineers.
History
Published online: Jan 1, 1997
Published in print: Jan 1997
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