Turbulence production by nonbreaking waves: Laboratory and numerical simulations

Turbulence Production by Nonbreaking Waves

Introduction: Historically, the parameterization of turbulence production in the upper ocean has relied primarily on the assumptions of near-wall turbulence theory, in which the wind-generated surface friction velocity acts as a moving boundary. In more complete parameterizations, an additional term is added in the top few meters to account for the dissipation of breaking surface waves. These t...

Direct numerical simulations of capillary wave turbulence.

This work presents direct numerical simulations of capillary wave turbulence solving the full three-dimensional Navier-Stokes equations of a two-phase flow. When the interface is locally forced at large scales, a statistical stationary state appears after few forcing periods. Smaller wave scales are generated by nonlinear interactions, and the wave height spectrum is found to obey a power law i...

Numerical Simulations of Incompressible Mhd Turbulence

The study of incompressible magnetohydrodynamic (MHD) turbulence gives useful insights on many astrophysical problems. We describe a pseudo-spectral MHD code suitable for the study of incompressible turbulence. We review our recent works on direct three-dimensional numerical simulations for MHD turbulence in a periodic box. In those works, we use a pseudo-spectral code to solve the incompressib...

Assessment of high-resolution methods for numerical simulations of compressible turbulence with shock waves

Flows in which shock waves and turbulence are present and interact dynamically occur in a wide range of applications, including inertial confinement fusion, supernovae explosion, and scramjet propulsion. Accurate simulations of such problems are challenging because of the contradictory requirements of numerical methods used to simulate turbulence, which must minimize any numerical dissipation t...

numerical simulations of spilling breaking waves