Frau, L.; Marzeddu, A.; Dini, E; Gracia, V.; Gironella, X.; Erioli A.; Zomparelli, A., and Sánchez-Arcilla, A., 2016. Effects of ultra-porous 3D printed reefs on wave kinematics. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., and McCarroll, R.J. (eds.), Proceedings of the 14th International Coastal Symposium (Sydney, Australia). Journal of Coastal Research, Special Issue, No. 75, pp. 851–855. Coconut Creek (Florida), ISSN 0749-0208.

Present 3D printing technology allows the efficient design and construction of structures with complex shapes and high porosity satisfying biological and coastal protection demands. In this case, an array of ultra-porous tetrahedron-shaped 3D printed artificial reef (UPTSAR) is proposed to be used as a submerged breakwater for both environmental enhancement and wave protection. The aim of this study is to analyse the wave-structure interaction effects and the resulting velocity and wave height fields. For this, two-dimensional small scale tests (1:15) using irregular waves were carried out in a wave flume facility at BarcelonaTech. The influence of wave steepness, relative freeboard, relative water depth and the porosity on wave Kinematics have been analysed. The paper will describe in detail the results obtained for the different tests. These results are used to evaluate the functionality of the UPTSAR as coastal protection structures.

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