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Numerical and experimental study of abrupt wave interaction with vertical and inclined rectangular obstacles
Author(s): Rasoul Memarzadeh, Habibeh Sheybani, Mohammad Zounemat-Kermani
Keywords: Free-surface flows; Abrupt wave; Fluid-solid Interaction; Experimental modeling; Numerical modeling; Incompressible smoothed particle hydrodynamics (ISPH); Finite volume method (FVM).
The aim of the present paper is the study of the interaction of the abrupt wave with vertical and inclined rectangular obstacles. For this purpose, in the first phase, two experiments have been done. The tests were performed with smooth rectangular cross-section channels, and related data were extracted using digital image processing. Flow behavior was recorded with one adjacent CCD camera through the glass walls of the entire downstream channel. In the second phase, the numerical study has been done by a mesh-free particle Lagrangian method (Incompressible Smoothed Particle Hydrodynamics, ISPH) and a mesh-based Eulerian method (Finite Volume Method with Volume of Fluid surface tracking approach, FV-VOF). The capabilities of the numerical methods in simulation of the sudden variations free surface flows have been assessed. A comparison between the computed and the experimental results shows that both numerical models simulate the flow behavior with reasonable accuracy.