An efficient algorithm for solving a multi-layer convection–diffusion problem applied to air pollution problems

Authors: L. Ferragut, M.I. Asensio, J.M. Cascón, D. Prieto, J. Ramírez

Abstract: 
An urban scale Eulerian non-reactive multilayer air pollution model is proposed describing convection, turbulent diffusion and emission. A mass-consistent wind field model developed by authors is included in the air pollution model. An Adaptive Finite Element Method with characteristics in the horizontal directions and Finite Differences in the vertical direction using splitting techniques is proposed to numerically solve the corresponding PDE problem. A parallel version of the algorithm improves the precision of the solution keeping computation time below real time of simulation. A numerical example illustrates the whole problem.

Keywords:
Air pollution modeling
Splitting methods
Adaptive Finite Element Method
Parallel algorithm
Parabolic convection–diffusion PDE
PDE numerical methods

Published in: Advances Engineering Software  (Volumes 65, November 2013)

Publisher: Elsevier

ISSN Information: 0965-9978

An efficient algorithm for solving a multi-layer convection–diffusion problem applied to air pollution problems

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