Print Email Facebook Twitter A fluid–structure interaction model for assessing the safety of flood gate vibrations due to wave impacts Title A fluid–structure interaction model for assessing the safety of flood gate vibrations due to wave impacts Author Tieleman, Orson (TU Delft Hydraulic Structures and Flood Risk) Hofland, Bas (TU Delft Hydraulic Structures and Flood Risk) Tsouvalas, A. (TU Delft Dynamics of Structures; TU Delft Offshore Engineering) de Almeida Sousa, E. (TU Delft Hydraulic Structures and Flood Risk) Jonkman, Sebastiaan N. (TU Delft Hydraulic Structures and Flood Risk) Date 2021 Abstract This paper establishes a computationally efficient model to predict flood gate vibrations due to wave impacts including fluid–structure interaction. In contrast to earlier models, composite fluid domains are included to represent the situation of a flood gate in a dewatering sluice with the presence of an overhang that causes the confined-wave impacts. The dynamic response of the gate-fluid system is derived in the frequency domain using a substructuring mode matching technique, in which the gate vibrations are first expressed in terms of in-vacuo modes while the liquid motion is described as a superposition of linear potentials. Pressure impulse theory is employed to predict the impulsive wave impact loads, which are superposed on the quasi-steady wave loads. The computational efficiency of the developed model allows for a large number of simulations. This makes it possible for the first time to perform probabilistic evaluations for this type of problems without doing concessions on the accuracy of the physical modelling of the involved fluid–structure interaction processes. This is demonstrated by application of the developed models within a probabilistic framework resulting in the explicit quantification of the failure probability of flood gates subjected to wave impacts. Subject Flood gateFluid–structure interactionMode matchingOverhangSemi-analyticalVibrationsWave impacts To reference this document use: http://resolver.tudelft.nl/uuid:4a778e42-642c-4270-af0e-645bde3017ca DOI https://doi.org/10.1016/j.coastaleng.2021.104007 ISSN 0378-3839 Source Coastal Engineering, 170, 1-17 Part of collection Institutional Repository Document type journal article Rights © 2021 Orson Tieleman, Bas Hofland, A. Tsouvalas, E. de Almeida Sousa, Sebastiaan N. Jonkman Files PDF 1_s2.0_S0378383921001575_main.pdf 5.27 MB Close viewer /islandora/object/uuid:4a778e42-642c-4270-af0e-645bde3017ca/datastream/OBJ/view