Abstract
Improvements to a previously published nonlinear parabolic wave model are developed and implemented. A second-order correction to a free-surface boundary condition used to develop the original model is formulated. The correction takes into account the complete second-order transformation between amplitudes of the velocity potential and those of the free-surface elevation. Additionally, wide-angle propagation terms are included in the model. It is shown that the model with the second-order correction retains the properties of third-order Stokes theory quite well in deep water. Comparisons of model behavior to data reveal that both nonlinearity and wide-angle propagation effects need to be included in the model for general wave transformation problems in shallow water. Skewness predictions are considerably improved by using both the second-order correction and by retaining a greater number of frequency components in the calculation. Asymmetry calculations are aided by incorporation of frequency-squared weighting for distribution of the dissipation function. Further improvement may entail a different form of the breaking model.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Waterway, Port, Coastal, and Ocean Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
