Mechanistic study of upper ocean turbulence interacting with surface waves

Xin Guo, Di Yang, Yi Liu, Lian Shen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We perform direct numerical simulations to simulate the interaction between surface waves and the turbulence underneath. The Navier-Stokes equations are simulated using a pseudospectral method in horizontal directions and a finite-difference method in vertical direction, with fully nonlinear viscous freesurface kinematic and dynamic boundary conditions at the free surface. We set up the turbulence and the waves by a random forcing method in the bulk flow and a pressure forcing method at the surface, which were recently developed by [1]. It is found that there are surface waves generated on the free surface due to the excitation by the turbulence. The surface elevation is sensitive to the effect of gravity and surface tension. In the presence of progressive waves at the free surface, the turbulent vortical structure is turned, stretched, and compressed periodically by the strain field of waves.

Original languageEnglish (US)
Title of host publicationASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering, OMAE2010
Pages721-727
Number of pages7
DOIs
StatePublished - Dec 1 2010
EventASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering, OMAE2010 - Shanghai, China
Duration: Jun 6 2010Jun 11 2010

Publication series

NameProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Volume3

Other

OtherASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering, OMAE2010
CountryChina
CityShanghai
Period6/6/106/11/10

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