A Lagrangian algorithm for the analysis of images related to a complex multiphase flow induced by the violent impact of a wave against a rigid wall, is proposed. Mathematical and numerical models are based on the Features tracking algorithm. Data are interpolated on a regular grid by adopting a non-Sibsonian Natural-Neighbors scheme on a Voronoi tessellation. A detailed description of the flow features characterizing the interaction between the impulsive wave pressure gradient, the rigid wall and the free surface is given, together with a measure of the velocity of sound inside the flow. The accuracy of the method is exploited by using synthetic images based on the SPH numerical data of a free oscillating hemisphere, pounced on a rigid wall near the free surface.
A Lagrangian algorithm for multiphase free surface flow
Miozzi M;Lugni C;
2008
Abstract
A Lagrangian algorithm for the analysis of images related to a complex multiphase flow induced by the violent impact of a wave against a rigid wall, is proposed. Mathematical and numerical models are based on the Features tracking algorithm. Data are interpolated on a regular grid by adopting a non-Sibsonian Natural-Neighbors scheme on a Voronoi tessellation. A detailed description of the flow features characterizing the interaction between the impulsive wave pressure gradient, the rigid wall and the free surface is given, together with a measure of the velocity of sound inside the flow. The accuracy of the method is exploited by using synthetic images based on the SPH numerical data of a free oscillating hemisphere, pounced on a rigid wall near the free surface.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
