Studying the rheology of geophysical flows with physical-mathematical models: An application of the GPUSPH particle engine.
Bilotta G., Zago V., Hérault A., Cappello A., Ganci G., Corradino C., Del Negro C.
IV - Geofisica e fisica dell'ambiente
GSSI Ex ISEF - Aula D - Mercoledì 25 h 16:30 - 19:00
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Geophysical flows are complex fluids the rheology of which is determined by physical and chemical properties including temperature, chemical composition and distribution of granular components. In the specific case of lava flows, the extreme conditions on the field and the evolution of these properties during the flow hinder the measurements and analysis necessary to build an accurate rheological model of the fluid. We show how physical-mathematical modelling can assist in the process, using GPUSPH, a high-performance implementation of the Smoothed Particle Hydrodynamics numerical method for computational fluid dynamics, to explore the possible rheological laws involved in an analog physical experiment.