Accession Number:

ADA578497

Title:

A Non-Equilibrium Sediment Transport Model for Coastal Inlets and Navigation Channels

Descriptive Note:

Journal article

Corporate Author:

ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB

Personal Author(s):

• Sanchez, Alejandro
• Wu, Weiming

Report Date:

2011-01-01

Pagination or Media Count:

11.0

Abstract:

This paper presents a depth-averaged sediment transport model with emphasis on morphodynamic processes near coastal inlets and navigation channels. The model solves the depth-averaged two-dimensional non-equilibrium transport equation of total-load sediment, considering bed-material hiding and exposure, avalanching and sediment transport over hard bottoms. The model is coupled with a depth-averaged circulation model and a spectral wave transformation model. Predicted bed changes are compared with measurements for two laboratory experiments of channel infilling and in a field study at Shinnecock Inlet, Long Island, NY. The results indicate that the model is capable of predicting the general trends of morphology change and provides a useful tool for engineering applications such as coastal sediment management, navigation channel maintenance, and beach erosion protection.

Descriptors:

• *CHANNELS(WATERWAYS)
• *EQUATIONS
• *INLETS(WATERWAYS)
• *SEDIMENT TRANSPORT
• AVALANCHES
• DEPTH
• FLOW
• HYDRODYNAMICS
• LOADS(FORCES)
• MORPHOLOGY
• OCEAN BOTTOM
• OCEAN CURRENTS
• POROSITY
• VELOCITY
• VISCOSITY
• WAVES

Subject Categories:

• Hydrology, Limnology and Potamology
• Numerical Mathematics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE