Speaker
Description
Inland ship locks couple a floating vessel, moving gates and a free-surface filling wave in a confined chamber. Design practice (PIANC; German hawser limits of order 1/600 of displacement) has long relied on physical models. Three-dimensional CFD with a moving ship is already used for lock filling, typically with body-fitted or morphing meshes whose updates dominate the cost. The open-source code REEF3D instead solves the two-phase Navier-Stokes equations on a fixed Cartesian grid: a level-set free surface with fifth-order WENO convection, and immersed STL bodies with direct forcing, so several rigid bodies can move without remeshing or overset grids. That 6DOF algorithm was validated for floating bodies in waves and moored structures, not for a multi-gate lock.
We present a laboratory-scale analog of a PIANC through-the-head lock. The tank is 12.2 m by 0.80 m by 2.9 m, divided into three 4 m basins by two lifting sluice gates. Still-water depth is 0.80 m in the lower reach and chamber; a 0.30 m head is set upstream. The barge is 2 m long and free in surge and heave only. The sequence is entry from the lower basin with the downstream gate open, closure of that gate, filling by lifting the upstream gate, then a weak timed ahead force into the upper reach. Gate motion is prescribed. The aim is a fixed-grid, multi-body demonstration of confined-water fluid-structure interaction in REEF3D, complementary to validated lock-filling studies.
| Topic Area | Advanced Computational Methods and Applications in Marine, Subsea and Offshore Technology |
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