Application of a Two-Dimensional Model of Hydrodynamics to the Lower Approach of the New Kentucky Lock, Tennessee River, Kentucky
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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Because the existing Kentucky Lock is operating at capacity, an additional 1,200 ft long by 110 ft wide lock is projected to be necessary to satisfy future capacity requirements. The new lock features a through the sill intake that carries flow to a multiport filling and emptying system. Two alternatives for the lock discharge outlet system were proposed 1 an interlaced lateral system located in the lower lock approach, 2 a landside channel that discharged downstream of the lower approach guide wall. The two dimensional 2D, depth averaged flow model, HIVEL2D, was used to simulate the unsteady velocities and water surface elevations in the lower lock approach resulting from lock emptying operations. The HIVEL2D model was chosen for this study because it provides numerically stable solutions for advection dominated flow containing large gradients in the flow variables. The HIVEL2D code was modified to allow specification of time dependent inflow boundary conditions. Simulations of the flow conditions in the lower lock approach for the proposed 1,200 ft lock were performed to evaluate the interlaced lateral and landside channel discharge alternatives.
- Civil Engineering
- Fluid Mechanics