An efficient algorithm for solving a multi-layer convection–diffusion problem applied to air pollution problems
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 horiz...
| Autores: | , , , , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2013 |
| País: | España |
| Recursos: | Universidad de Salamanca (USAL) |
| Repositório: | GREDOS. Repositorio Institucional de la Universidad de Salamanca |
| OAI Identifier: | oai:gredos.usal.es:10366/163831 |
| Acesso em linha: | http://hdl.handle.net/10366/163831 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Air pollution modeling Splitting methods Adaptive Finite Element Method Parallel algorithm Parabolic convection–diffusion PDE PDE numerical methods |
| Resumo: | 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. |
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