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

作　　者：Kae Tsunematsu Bastien Chopard Jean-Luc Falcone Costanza Bonadonna 

机构地区：[1]Department of Mineralogy,University of Geneva,13 Rue des Maraichers,1205 Geneve,Switzerland [2]Department of Computer Science,University of Geneva,7 Route de Drize,1227 Carouge,Switzerland

出　　处：《Communications in Computational Physics》2011年第5期1323-1334,共12页计算物理通讯（英文）

基　　金：supported by the Swiss National Science Foundation and the European Commission(COAST project EUFP6-IST-FET Contract 033664).

摘　　要：In order to model the dispersal of volcanic particles in the atmosphere and their deposition on the ground,one has to simulate an advection-diffusionsedimentation 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.

关 键 词：Cellular automata lattice Boltzmann tephra transport ADVECTION-DIFFUSION computational efficiency 

分 类 号：TP1[自动化与计算机技术—控制理论与控制工程]