EXAMINATION OF UNIFIED SEDIMENT TRANSPORT AND CROSS SHORE MORPHOLOGY MODEL
A numerical model was developed to simulate the flow and sediment motion in connection with plunging breakers in the surf zone. The Reynolds-Averaged Navier-Stokes (RANS)equations in two spatial dimensions were employed to simulate the flow field together with a k-εmodel for the turbulence and the Volume of Fluid (VOF) method for multiple free-surface tracking.An advection-diffusion equation was used for the suspended sediment concentration with a bottom boundary condition following the reference concentration formulation. The Meyer Peter Muller(MPM) formula was used to estimate bed-load transport and Weighted Essentially Non Oscillatory (WENO) scheme was used to calculate the seabed evolution. Incorporating bed-load, suspended load and seabed evolution formulation in the present model, the performance of the new model were examined through the comparison with experimental data. Good agreement between the model and experimental data was obtained for the surface elevation and velocity, turbulent kinetic energy, eddy viscosity, bottom shear stresses, suspended sediment concentration as well as seabed evolution.
plunging breaker bottom boundary layer bottom shear stress turbulent flow
Budianto Ontowirjo Akira Mano
Department of Civil Engineering, Tohoku University,6-6-11-1110 Aoba, Sendai 980-8579, Japan Graduate School of Engineering, Department of Civil and Environmental Engineering,Tohoku University,
国际会议
第16届亚太地区国际水利学大会暨第3届水工水力学国际研讨会(16th IAHR-APD Congress and 3rd Symoposium of IAHR-ISHS)
南京
英文
1272-1276
2008-10-20（万方平台首次上网日期，不代表论文的发表时间）