Print Email Facebook Twitter Large-scale investigation of wave dampening characteristics of organic, artificial floating islands Title Large-scale investigation of wave dampening characteristics of organic, artificial floating islands Author Landmann, Jannis (Leibniz Universität) Hammer, T.C. (TU Delft Offshore Engineering) Günther, Henning (Hochschule für Technik und Wirtschaft Dresden) Hildebrandt, Arndt (Leibniz Universität) Date 2022 Abstract The concept of floating vegetation-based islands for the bioremediation of aquatic ecosystems is well known. Less so, their hydrodynamic capabilities regarding the damping performance, positional stability and water-structure interactions. To this end, physical model tests with fully organic, reed-based gabions were carried out in a large-scale facility in this study. The initial, reflected, and transmitted waves were recorded and analyzed regarding transmission and reflection coefficients. A motion tracking system was utilized to allow for an investigation regarding the motion of the artificial floating islands under waves. The results show that the artificial floating islands significantly dampen shorter waves with a wave period of T ≤ 2.25 s. The transmission of the incident waves is reduced by 50% for the smallest wave periods (T = 1.5 s). The incident waves are reflected between 20 and 50% for the same wave period. The incident wave energy is dissipated by up to 85% for the smallest wave height and period (H = 0.10 m, T = 1.5 s). The comparable performance regarding more traditional floating breakwaters is discussed as well as the width of the structure as the key parameter for the layout of artificial floating islands in rivers and still waters regarding the damping performance. Subject Artificial floating islandsLarge scale experimentReflection coefficientTransmission coefficientWave dampening To reference this document use: http://resolver.tudelft.nl/uuid:f9641752-3892-43ff-b03b-9a7b60a4b8f7 DOI https://doi.org/10.1016/j.ecoleng.2022.106691 ISSN 0925-8574 Source Ecological Engineering, 181 Part of collection Institutional Repository Document type journal article Rights © 2022 Jannis Landmann, T.C. Hammer, Henning Günther, Arndt Hildebrandt Files PDF 1_s2.0_S0925857422001525_main.pdf 9.31 MB Close viewer /islandora/object/uuid:f9641752-3892-43ff-b03b-9a7b60a4b8f7/datastream/OBJ/view