Energy dissipation and transfer processes during the breaking of modulated wave trains

[摘要] In this work numerical simulation of the breaking induced by the modulational instability are presented. The study is focused on the energy and momentum exchanged taking place at the air-water interface during the breaking process. Simulations are performed by a two-fluids Navier-Stokes solver combined with the VOF technique, which provides a detailed description of the flow in both phases. Results obtained by two different initial conditions are presented in terms of free surface shapes, energy in air and water, vertical fluxes of horizontal momentum and vorticity.

[发布机构] University of Rome Tor Vergata, 1 Politecnico street, Rome; 00133, Italy^1;CNR-INSEAN Marine Technology Research Institute, 139 Vallerano street, Rome; 00128, Italy^2

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Air water interfaces;Breaking process;Free surface shapes;Initial conditions;Modulated wave trains;Modulational instability;Navier-Stokes solver;Transfer process