Improved Source Term Specification Improved Evolutionary Characteristics of Directional Spectra
Abstract
The long-term goals are: (a) To formulate an accurate, efficient, computational model for 4-wave interactions in order to simulate the detailed shape characteristics of directional spectra produced by nonlinear momentum, energy and action fluxes in all stages of wave generation in depths from deep to shallow water. (b) To develop improved source terms for wind input and wave breaking in phase-averaged models that incorporate the effects of phase-dependent attributes within waves and the boundary-layer flow above them. (c) Numerically investigate the capability of the new source terms for nonlinear interactions, wind input and wave breaking to capture the details of spectral shape in detailed-balance (i.e. third generation) wave models. (d) Determine situations in which the wave generation mechanisms in this new physics paradigm would differ markedly from existing models such as WAVEWATCHtm (WW3) and SWAN for realistic wave conditions. (e) Test the new source terms within a simple model in terms of their ability to reproduce detailed characteristics of directional spectra (energy levels within the equilibrium, spectral peakedness, and frequency-dependent directional distribution) that are consistent with recent published studies.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 2012
- Accession Number
- ADA590330
Entities
People
- Donald T. Resio
Organizations
- University of North Florida