Effects of turbulence models on numerical simulations of wave breaking and run-up on a mild slope beach

摘要：

The performance of the standard k–e model, the high-Reynolds-number k–? model, the 1-equation k model, and the non-friction Euler model is examined against the case of wave run-up on a mild slope. A numerical model based on N-S equations and Volume Of Fluids (VOF) method is employed. Comparisons of elevation, velocity and shear stress are made among the four turbulence models against experimental data of wave run-up on a mild slope beach.It is found that before wave breaking on the slope, the outputs of the four different turbulence models agree reasonably well with each other. This suggests that during the run-up process the turbulence effect is negligible before wave breaking.Moreover, in the wave breaking zone, both the standard k–e model and the high-Reynolds-number k–? model predict the mean velocity field quite well, but generally under-predict the velocity and turbulent kinetic energy using wall functions on the solid slope surface.

关键词： Turbulence model shear stress wave run-up wave breaking

作者: Hong Xiao Wen-rui Huang

作者单位: Department of Civil and Environmental Engineering,Florida State University,Tallahassee,USA;State Key Department of Civil and Environmental Engineering,Florida State University,Tallahassee,USA;Tongji Un

会议类型: 国际会议

会议名称: 9th International Conference on Hydrodynamics(第九届国际水动力学会议 ICHD2010)

会议地点: 上海

会议语种:英文

页码: 166-171

在线出版日期: 2010-10-11（万方平台首次上网日期，不代表论文的发表时间）