The objective of this research is to incorporate sediment transport modeling to the former hydrodynamic model called STREMR (Bernard, 1993). STREMR generates discrete solutions of the incompressible Navier-Stokes equations for depth-averaged two-dimensional flow. STREMR includes a three-dimensional (3-D) secondary flow correction to account for the interaction between lateral curvature and vertical nonuniformity. This interaction essentially causes high velocities to migrate to the outside of a curve. STREMR uses a second-order model (k-e) for modeling the turbulence.
The Lab has added a sediment transport model to STREMR. The new version is called STREMR HySeD. The sediment transport model incorporates both suspended and bed-load transport. Ten sets of size classes can be treated as suspended transport. For now just one bed-load transport class has been considered. Different formulae for computing entrainment and bed-load have been implemented in the model. STREMR HySeD incorporates interfaces developed in Visual C++ and some features for pre- and post- processing have been added to maximize the analysis of the results.
STREMR HySeD has been tested in a number of situations, including the SEPA (Sidestream Elevated Pool Aeration) station 3, operated by Metropolitan Water Reclamation District of Greater Chicago.