caa a22 4500 606166947 CHVBK 20210128100700.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s10665-014-9734-1 doi (NATIONALLICENCE)springer-10.1007/s10665-014-9734-1 Radiation, trapping and near-trapping in arrays of floating truncated cylinders [Elektronische Daten] [H. Wolgamot, R. Eatock Taylor, P. Taylor] Circular arrays of fixed truncated vertical cylinders are known to support so-called sloshing near-trapped modes when subjected to incident water waves of the appropriate frequency and direction. In this paper waves radiated from circular arrays of truncated cylinders oscillating independently in still water are considered. For a square array of four cylinders, peaks in the condition number of the radiation damping matrix are used to identify body motion modes of interest. Body motions which excite the same free surface motion local to the array as the sloshing near-trapped mode are associated with enhanced radiation from the array. In contrast, at lower frequencies oscillations with low wave radiation to infinity are found when the cylinders oscillate in phase, in either heave or surge. For an array with eight cylinders this almost wave-free behaviour is dramatically enhanced, and a very simple arrangement which represents an extremely close approximation to a ‘motion-trapping structure' may be constructed. Springer Science+Business Media Dordrecht, 2014 Floating bodies nationallicence Near-trapping nationallicence Trapped modes nationallicence Water waves nationallicence Wolgamot H. Department of Engineering Science, University of Oxford, Parks Road, OX1 3PJ, Oxford, United Kingdom aut Eatock Taylor R. Department of Engineering Science, University of Oxford, Parks Road, OX1 3PJ, Oxford, United Kingdom aut Taylor P. Department of Engineering Science, University of Oxford, Parks Road, OX1 3PJ, Oxford, United Kingdom aut Journal of Engineering Mathematics Springer Netherlands 91/1(2015-04-01), 17-35 0022-0833 91:1<17 2015 91 10665 https://doi.org/10.1007/s10665-014-9734-1 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10665-014-9734-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wolgamot H. Department of Engineering Science, University of Oxford, Parks Road, OX1 3PJ, Oxford, United Kingdom aut NATIONALLICENCE 700 1- Eatock Taylor R. Department of Engineering Science, University of Oxford, Parks Road, OX1 3PJ, Oxford, United Kingdom aut NATIONALLICENCE 700 1- Taylor P. Department of Engineering Science, University of Oxford, Parks Road, OX1 3PJ, Oxford, United Kingdom aut NATIONALLICENCE 773 0- Journal of Engineering Mathematics Springer Netherlands 91/1(2015-04-01), 17-35 0022-0833 91:1<17 2015 91 10665