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Comparison of Two Advection-Diffusion Methods for Tephra Transport in Volcanic Eruptions

Published online by Cambridge University Press:  20 August 2015

Kae Tsunematsu,
Bastien Chopard,
Jean-Luc Falcone and
Costanza Bonadonna
Kae Tsunematsu*
Affiliation:
Department of Mineralogy, University of Geneva, 13 Rue des Maraichers, 1205 Geneve, Switzerland
Bastien Chopard*
Affiliation:
Department of Computer Science, University of Geneva, 7 Route de Drize, 1227 Carouge, Switzerland
Jean-Luc Falcone*
Affiliation:
Department of Computer Science, University of Geneva, 7 Route de Drize, 1227 Carouge, Switzerland
Costanza Bonadonna*
Affiliation:
Department of Mineralogy, University of Geneva, 13 Rue des Maraichers, 1205 Geneve, Switzerland
*
Email:Kae.Tsunematsu@unige.ch
Corresponding author.Email:Bastien.Chopard@unige.ch
Email:Jean-Luc.Falcone@unige.ch
Email:Costanza.Bonadonna@unige.ch
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Abstract

In order to model the dispersal of volcanic particles in the atmosphere and their deposition on the ground, one has to simulate an advection-diffusion-sedimentation process on a large spatial area. Here we compare a Lattice Boltzmann and a Cellular Automata approach. Our results show that for high Peclet regimes, the cellular automata model produce results that are as accurate as the lattice Boltzmann model and is computationally more effective.

Keywords

37B1502.60.-xCellular automatalattice Boltzmanntephra transportadvection-diffusioncomputational efficiency

Information

Type
Research Article
Information
Communications in Computational Physics , Volume 9 , Issue 5 , May 2011, pp. 1323 - 1334
Copyright
Copyright © Global Science Press Limited 2011

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References

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