Basing on the work by Antuono et al. (2010) [1], an SPH model with numerical diffusive terms (here denoted delta-SPH) is combined with an enhanced treatment of solid boundaries to simulate 20 gravity waves generated by a wave maker and propagating into a basin. Both regular and transient wave systems are considered. In the former, a large number of simulations is performed for different wave steepness and height-to-depth ratio and the results are compared with a BEM Mixed-Eulerian-Lagrangian solver (here denoted BEM-MEL solver). In the latter, the delta-SPH model has been compared with both the experimental measurements available in the literature and with the BEM-MEL solver, at least until the breaking event occurs. The results show a satisfactory agreement between the delta-SPH model, the BEM-MEL solver and the experiments. Finally, the influence of the weakly-compressibility assumption on the SPH results is inspected and a convergence analysis is provided in order to identify the minimal spatial resolution needed to get an accurate representation of gravity waves. (C) 2010 Elsevier B.V. All rights reserved.
Propagation of gravity waves through an SPH scheme with numerical diffusive terms / Antuono, M; Colagrossi, A; Marrone, S; Lugni, C. - In: COMPUTER PHYSICS COMMUNICATIONS. - ISSN 0010-4655. - 182:4(2011), pp. 866-877. [10.1016/j.cpc.2010.12.012]
Propagation of gravity waves through an SPH scheme with numerical diffusive terms
Lugni C
2011
Abstract
Basing on the work by Antuono et al. (2010) [1], an SPH model with numerical diffusive terms (here denoted delta-SPH) is combined with an enhanced treatment of solid boundaries to simulate 20 gravity waves generated by a wave maker and propagating into a basin. Both regular and transient wave systems are considered. In the former, a large number of simulations is performed for different wave steepness and height-to-depth ratio and the results are compared with a BEM Mixed-Eulerian-Lagrangian solver (here denoted BEM-MEL solver). In the latter, the delta-SPH model has been compared with both the experimental measurements available in the literature and with the BEM-MEL solver, at least until the breaking event occurs. The results show a satisfactory agreement between the delta-SPH model, the BEM-MEL solver and the experiments. Finally, the influence of the weakly-compressibility assumption on the SPH results is inspected and a convergence analysis is provided in order to identify the minimal spatial resolution needed to get an accurate representation of gravity waves. (C) 2010 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
