Print Email Facebook Twitter An Idealised Morphodynamic Model of a Tidal Inlet and the Adjacent Sea Title An Idealised Morphodynamic Model of a Tidal Inlet and the Adjacent Sea Author Rozendaal, Marco (TU Delft Electrical Engineering, Mathematics and Computer Science) Contributor Schuttelaars, Henk (mentor) Dubbeldam, Johan (graduation committee) Möller, Matthias (graduation committee) Degree granting institution Delft University of Technology Programme Applied Mathematics Date 2019-08-30 Abstract Tidal inlet systems are often highly valuable and sometimes even unique ecosystems. However, field measurements show that tidal inlet systems are sensitive to changing exogenous conditions, such as rising sea levels. This thesis aims to investigate to what extent the adjacent sea influences the stability and equilibrium state of the tidal inlet. A one-dimensional idealised model is used to model the interaction between the sea and the inlet. The water motion is forced by the tide and the inlet is assumed to be narrow and short. At equilibrium, an increasingly sloping bottom is found in the sea and a constantly sloping bottom in the inlet. This equilibrium bottom profile seems to be in reasonable agreement with observations. The sea-inlet bottom profile is less stable than the inlet bottom profile, nevertheless, the sea-inlet bottom profile is still asymptotically linear stable. Moreover, the results in this thesis suggest that for one-dimensional idealised models consisting solely of a tidal inlet, the correct seaward boundary condition is a properly chosen fixed entrance depth. For a two-dimensional semi-infinite sea, it is shown that a Perfectly Matched Layer is a convenient method to incorporate the Sommerfeld radiation condition and that the narrow tidal inlet cannot be modelled as a point source forcing in the two-dimensional sea domain. Subject Morphodynamic modelIdealised modelTidal inlet systemTidal embaymentMorphodynamic equilibriumEquilibrium bed profilesStability analysis To reference this document use: http://resolver.tudelft.nl/uuid:edc2ffd6-00fd-4cd6-883b-13b14528cb72 Part of collection Student theses Document type master thesis Rights © 2019 Marco Rozendaal Files PDF Thesis_Marco_Rozendaal.pdf 4.09 MB Close viewer /islandora/object/uuid:edc2ffd6-00fd-4cd6-883b-13b14528cb72/datastream/OBJ/view