LARGE EDDY SIMULATION OF WAVE BREAKING WITH MOMENTUM-ADVECTED SCHEME FOR UNI-PHASE BUBBLY FLOW

Proceedings of the International Conference on Coastal Engineering

Yuriko Matsubayashi¹  Akio Okayasu² 

[1] Iwate University;Tokyo University of Marine Science and Technology

关键词: wave breaking;    Large Eddy Simulation;    bubbly flow;    momentum conservation;   

DOI  :  10.9753/icce.v34.waves.56

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

In order to simulate wave breaking process, air mass and bubbles entrained in water should be considered in calculation. In the present study, a numerical scheme is developed for wave breaking assuming an incompressible uni-phase flow with density varying between air and water. To satisfy the momentum conservation over the computational domain with large density variation, Navier-Stokes equation described in terms of momentum advection is employed as the governing equation. The advection terms of the momentum equation and advection equation for Density Value Method are solved by R-CIP method to minimize numerical diffusion. The results are compared with experimental results for a dam-break, bore and wave breaking on a slope. It is found that the model can reproduce bubbly areas due to wave breaking fairy well.

【 授权许可】

Unknown