A numerical model for the dynamics of pyroclastic flows at Galeras volcano, Colombia

Córdoba, G. (2005) A numerical model for the dynamics of pyroclastic flows at Galeras volcano, Colombia. Journal of Volcanology and Geothermal Research, 139. pp. 59-71. ISSN 0377-0273

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Resumen

This paper presents a two-dimensional model for dilute pyroclastic flow dynamics that uses the compressible Navier–Stokes equation coupled with the Diffusion–Convection equation to take into account sedimentation. The model is applied to one of the slopes of Galeras Volcano to show: (1) the temperature evolution with the time; (2) dynamic pressure change; and (3) particle concentration along the computer domain from the eruption to the impact with a topographic barrier located more than 16 km from the source. Two initial solid volumetric fractions are modeled. For both cases, some of the structures located more distant than 10 km could survive, but in all cases the flow remains deadly. This paper shows that a dynamical model of pyroclastic flows can be implemented using personal computers.

Tipo de Elemento:	Artículo
Palabras Clave:	pyroclastic flow model numerical finite element hazard
Asunto:	Q Ciencias > QE Geology T Tecnología > TA Engineering (General). Civil engineering (General)
Division:	Facultad de Ingeniería > Programa de Ingeniería Civil > Productividad
Depósito de Usuario:	Dr Gustavo Cordoba
Fecha Deposito:	17 Jul 2019 14:02
Ultima Modificación:	17 Jul 2019 14:02
URI:	http://sired.udenar.edu.co/id/eprint/3637

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