The study investigates the dynamical characteristics of the impact of mud and lava flows against a rigid wall. The flowing medium is modeled as a non-Newtonian homogeneous continuum fluid and a power-law model with a shear-thickening behavior is chosen as the constitutive equation. The flow occurs as a dam-break wave and it is simulated adopting the 1-D shallow water equations. The analysis focuses on the evaluation of the peak force under different conditions. Results suggest that both the fluid rheology and the wall distance have a strong influence on the dynamics of the impact.
Dynamic impact of shear thickening power law fluids against a rigid wall
Michele Iervolino;Andrea Vacca
2022
Abstract
The study investigates the dynamical characteristics of the impact of mud and lava flows against a rigid wall. The flowing medium is modeled as a non-Newtonian homogeneous continuum fluid and a power-law model with a shear-thickening behavior is chosen as the constitutive equation. The flow occurs as a dam-break wave and it is simulated adopting the 1-D shallow water equations. The analysis focuses on the evaluation of the peak force under different conditions. Results suggest that both the fluid rheology and the wall distance have a strong influence on the dynamics of the impact.File in questo prodotto:
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