Sediment transport in wave-current bottom boundary layer under linear propagating waves at an angle with the current have been investigated for different sediment grain sizes. The model uses the incompressible unsteady Reynolds-averaged Navier-Stokes (URANS) equations and the continuity equa- tion as the governing equations for momentum and mass conservation, respec- tively. The turbulence closure is provided by a k-? model. Sediment transport formulations by Nielsen (1992) and Zyserman and Fredsoe (1994) are used. The mean suspended sediment flux and bedload transport decrease as the an- gle between the linear propagating waves and current increases. The bedload rate increases with increasing grain size, whereas the suspended load decreases. However, the total sediment transport decreases with increasing grain size.
展开▼
