STUDH: A Two-Dimensional Numerical Model for Sediment Transport

by W. H. McAnally, US Army Corps of Engineers, United States,



Document Type: Proceeding Paper

Part of: Sediment Transport Modeling

Abstract:

TABS-2 water level and flow computations are performed by the generalized numerical model program RMA-2V; salinity and tracer transport computations are performed with RMA-4, and sediment transport computations are performed by STUDH. All three models use the finite element solution technique and can perform computations on the same computational mesh. STUDH performs only sediment transport computations, so hydrodynamics -- water levels, current velocities, short period wave heights and periods -- must be computed externally and specified as input to STUDH. RMA-2V and STUDH use the same computational mesh and quadratic interpolation functions, so that the water level and velocity field generated by RMA-2V is exactly recreated by STUDH. STUDH calculates transport of sediment by solution of the unsteady, depth-integrated, 2D convection-diffusion equation with source/sink terms representing deposition/erosion processes and bed keeping routines that account for bed structure (thickness, density, strength, etc.) Both cohesive and noncohesive transport are computed.

Subject Headings: Sediment transport | Computer models | Two-dimensional models | Water supply systems | Numerical models | Finite element method | Mathematical models | United States

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