Capabilities of CCHE3D hydrodynamic and transport model: verification

CCHE3D model is developed at the National Center for Computational Hydroscience and Engineering, The University of Mississippi, for simulating unsteady, free surface, three-dimensional turbulent flows and sediment/pollutant transport and water quality. This model is based on Efficient Element Method, a collocation version of the Galerkin approach. The basic element is a cube with twenty-seven nodes. Both hydrostatic and dynamic pressure of the flow can be simulated depending on the nature of the problem. Staggered grid is used for the pressure solution. The velocity correction method is adopted to compute the dynamic pressure and enforce the mass conservation. The kinematics equation for the free surface is solved to determine the location of the free surface. Five eddy viscosity models, parabolic, mixing length, k-ε, RNG k-ε and nonlinear k-ε model are available for a variety of applications.