Graduation of Lindert Ambagts

05 juni 2019 15:45 - Locatie: Lecture Hall E, Faculty of Mechanical, Maritime and Materials Engineering (3mE) - Door: Webredactie

"Flow over and around submerged groynes" | Professor of graduation: Prof. dr. ir. W.S.J. Uijttewaal, supervisors: Dr. ir. E.Mosselman (TU Delft), Dr. ir. R. J. Labeur (TU Delft), ir. C. J. Sloff (TU Delft & Deltares), Dr. ir. M.F.M. Yossef (Deltares).

In submerged conditions groynes add resistance to a river, thereby increasing the water levels for a particular discharge. Groynes are modelled in two ways, either they are included in the bed topography when the grid resolution is sufficiently high or with a sub-grid parametrisation when the grid cell-size is larger than the geometry of the groyne. To investigate the flow patterns over and around groynes, data from a groyne flume experiment, as carried out by the BAW, is analysed. The experiment is modelled in 2DH and in 3D to compare the performance of the sub-grid parametrisation with full 3D non-hydrostatic simulations.