TIME-DEPENDENT DEPTH-INTEGRATED TURBULENCE MODELING OF BREAKING WAVES

Kazuo Nadaoka; Osafumi Ono

doi:10.9753/icce.v26.%p

Núm. 26 (1998), Conference Proceedings

Núm. 26 (1998)

TIME-DEPENDENT DEPTH-INTEGRATED TURBULENCE MODELING OF BREAKING WAVES

Conference Proceedings

Publicado 1998-01-29

Kazuo Nadaoka⁺⁻
Osafumi Ono⁺⁻

Kazuo Nadaoka

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

Osafumi Ono

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

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Palabras clave

breaking waves
turbulence
turbulence modeling

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TIME-DEPENDENT DEPTH-INTEGRATED TURBULENCE MODELING OF BREAKING WAVES. (1998). Coastal Engineering Proceedings, 1(26). https://doi.org/10.9753/icce.v26.%p

Resumen

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.

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TIME-DEPENDENT DEPTH-INTEGRATED TURBULENCE MODELING OF BREAKING WAVES

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