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Simulation 3D des ondes de batillage générées par le passage des bateaux et des processus associée de transport de sédiments

Abstract : Ship-generated waves in restricted waterways lead to the stream banks erosion and cause environmental damage which harms fish, plants, benthos, plankton, etc. They also alter the channel morphology because of the resuspension and transport of bed material by accelerated flows caused by moving-ships. The magnitude of these waves depends mainly on the geometrical and kinematical parameters of the convoy.The objective of this study is to predict the relationship between these geometrical and kinematical parameters and the amplitude of ship-generated waves as well as the water plane drawdown. Numerical simulations are conducted by solving the 3-dimensional Navier-Stokes equations along with the k-ε model for turbulent processes. The results are compared firstly with the empirical models and secondly with experimental measurements performed by the French Compagnie Nationale of Rhône (CNR). The exitance of the propeller increases the sediment in suspension. Therefore, the relationships between the re-suspended sediments and the advancing speeds of the convoy, the wakes generated by the moving convoy, as well as the number of barges are studied by adding 3D advection-diffusion equation and a propeller model.
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Submitted on : Wednesday, June 12, 2013 - 10:22:10 AM
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Shengcheng Ji. Simulation 3D des ondes de batillage générées par le passage des bateaux et des processus associée de transport de sédiments. Mécanique [physics.med-ph]. Université de Technologie de Compiègne, 2013. Français. ⟨NNT : 2013COMP2068⟩. ⟨tel-00833187⟩

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