HR: 0800h
AN: H51I-0885    [Abstracts]
TI: Validating a perturbation approach to the large eddy simulation of wave induced sediment transport
AU: * Harris, J C
EM: jcharris@oce.uri.edu
AF: University of Rhode Island Department of Ocean Engineering, Narragansett Bay Campus, Narragansett, RI 02882, United States
AU: Grilli, S T
EM: grilli@oce.uri.edu
AF: University of Rhode Island Department of Ocean Engineering, Narragansett Bay Campus, Narragansett, RI 02882, United States
AB: We present a large eddy simulation of wave induced sediment transport. The model uses a perturbation approach where an inviscid and irrotational solution is subtracted from the Navier-Stokes equation allowing for a simple coupling of the large eddy simulation to a fully nonlinear potential flow wave model. We discuss results for oscillating shear flows and wave-induced flows to verify a log boundary layer and the Rouse curve for suspended sediment concentration. A moving bottom algorithm was implemented and the method is being tested for studying scour around partially buried objects near the surf zone (such as mines). It could be later adapted for varying grain sizes.
DE: 0550 Model verification and validation
DE: 1805 Computational hydrology
DE: 1862 Sediment transport (4558)
DE: 4490 Turbulence (3379, 4568, 7863)
DE: 4534 Hydrodynamic modeling
SC: Hydrology [H]
MN: 2007 Fall Meeting