Multiscale Deterministic Wave Modeling with Wind Input and Wave Breaking Dissipation

摘要

The primary focus of this research is to use large-eddy simulation (LES) and large-wave simulation (LWS) to obtain improved physical understanding of wind-wave-ocean interactions, based on which we aim to develop effective models of wind input and whitecapping dissipation for phase-resolving, nonlinear wave-field simulation at large scales. Our ultimate goal is to establish a numerical capability for predicting deterministically large-scale nonlinear wave-field in real marine environments with the presence of significant wind and wave breaking effects. Objectives: the scientific and technical objectives of this research are to: develop advanced LES and LWS numerical capabilities for wind-wave-ocean interactions with physics-based subgrid-scale (SGS) models; use high-performance LES/LWS as a powerful research tool to obtain an improved understanding of the flow structure in the atmosphere-ocean wave boundary layer develop effective models for wind input and the associated whitecapping dissipation in a direct phase-resolving context, which can be readily incorporated into the deterministic numerical tool of the Simulation of Nonlinear Ocean Wave-field (SNOW) understand effects of multi- scale physics and environmental uncertainties upon wave deterministic propagation, and to effectively model these effects; validate the direct modeling and simulation approach, and perform direct comparison with existing theories and field measurements.