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pubblicazioni - Memoria

Experimental validation of a 3D SPH model for the simulation of adam-break event involving multiple fixed and mobile bodies

pubblicazioni - Memoria

Experimental validation of a 3D SPH model for the simulation of adam-break event involving multiple fixed and mobile bodies

Abbiamo validato un modello SPH (Smoothed Particle Hydrodynamics) per il trasporto (in 3D) di corpi solidi in flussi a superficie libera. Il test sperimentale di riferimento è stato realizzato nell’ambito di questo studio e riproduce un dam break con trasporto multiplo di corpi solidi, in presenza di strutture fisse e paratia mobile.

Fast-moving flows due to flash floods and/or dam-break events may often cause potential hazard to human beings and their proprieties in urban floodplains. Recently, flood risks related to solid bodies transport, such as vehicles, have become more and more common and, therefore, worth investigating. These hydraulic phenomena are complex events difficult to analyze if not through numerical modeling. In order to validate the accuracy of the models, and to demonstrate their capabilities in reproducing this kind of phenomena, experimental tests are necessary. In this paper, a dam break wave evolution involving two fixed structures and three mobile bodies is simulated with a 3D Smoothed Particle Hydrodynamics model and validated through laboratory experiments.

The model is shown to accurately fit both the measures of flow depths, upstream the fixed obstacles, and the bodies’ movements in time. Therefore, in order to study and mitigate the risks due to the floating bodies transport, the model could be used to support or, eventually, substitute laboratory experiments, which are expensive, difficult to perform and, in most cases, not completely repeatable.

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