Print Email Facebook Twitter Modelling Sediment Transport in the Swash Zone Title Modelling Sediment Transport in the Swash Zone Author Van Rooijen, A.A. Contributor Stive, M.J.F. (mentor) Reniers, A.J.H.M. (mentor) Van Thiel de Vries, J.S.M. (mentor) McCall, R.T. (mentor) Henriquez, M. (mentor) Smit, P.B. (mentor) Faculty Civil Engineering and Geosciences Department Hydraulic Engineering Programme Coastal Engineering Date 2011-08-19 Abstract The swash zone is the part of the beach that reaches from the limit of wave run-up until the limit of wave run-down. It is recognized as being a dynamic area of the nearshore region, characterized by strong and unsteady flows, high turbulence levels, large sediment transport rates and morphological changes on a small timescale. Due to the complexity of the processes taking place in the swash zone, there are still great uncertainties about the driving forces for sediment transport. Morphodynamic process-based numerical models tend to overestimate the seaward directed sediment transport in the swash zone, especially for mild wave conditions. The main objective of this thesis is to obtain insight in the hydrodynamic processes responsible for sediment transport in the swash zone, and to use this knowledge to optimize a morphodynamic numerical model (XBeach) for simulating swash zone physics. First, an extensive literature review is carried out to provide the physical base. Second, a number of (theoretical) linear profile simulations are conducted to provide insight into the simulated swash characteristics for different beach states, and to assess the effect of including a number of swash processes (e.g. turbulence or groundwater flow) in the simulations. Third, measurements obtained during a field experiment in Le Truc Vert (France) are used to verify three hydrodynamic modelling approaches and two sediment transport models. Subject numerical modellingXBeachhigh frequency swashlow frequency swashLe Truc Vert To reference this document use: http://resolver.tudelft.nl/uuid:632cd1ad-ca43-4289-a7d3-79b134459ed6 Part of collection Student theses Document type master thesis Rights (c) 2011 Van Rooijen, A.A. Files PDF VanRooijen_2011.pdf 3.3 MB Close viewer /islandora/object/uuid:632cd1ad-ca43-4289-a7d3-79b134459ed6/datastream/OBJ/view