TIME-DEPENDENT DEPTH-INTEGRATED TURBULENCE MODELING OF BREAKING WAVES

Proceedings of the International Conference on Coastal Engineering

Kazuo Nadaoka¹  Osafumi Ono¹ 

[1] Department of Mechanical and Environmental Informatics, Graduate School of Information Science and Engineering, Tokyo Institute of Technology

关键词: breaking waves;    turbulence;    turbulence modeling;   

DOI  :  10.9753/icce.v26.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

A breaking wave model is presented to simulate non-equilibrium evolution of turbulence with a time-dependent depth-integrated equation of turbulence intensity, which is to be coupled with nonlinear wave. As the crucial part of the modeling, a method to estimate the production rate of turbulent kinetic energy is developed. This method is based on the experimental observation of the pseudo-periodic generation of large-scale eddies near the wave crest of turbulent bore. As a demonstration to show the performance of the present model, numerical examples are given for regular and irregular waves on a slope and regular waves on a double step, indicating that this model can give favorable features of evolution of regular and irregular breaking waves and the production and diffusion of turbulent kinetic energy.

【 授权许可】

Unknown