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Parallelization of Advection-Diffusion-Chemistry Modules

  • István Faragó
  • Krassimir Georgiev
  • Zahari Zlatev
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4818)

Abstract

An advection-diffusion-chemistry module of a large-scale air pollution model is split into two parts: (a) advection-diffusion part and (b) chemistry part. A simple sequential splitting is used. This means that at each time-step first the advection-diffusion part is treated and after that the chemical part is handled. A discretization technique based on central differences followed by Crank-Nicolson time-stepping is used in the advection-diffusion part. The non-linear chemical reactions are treated by the robust Backward Euler Formula. The performance of the combined numerical method (splitting procedure + numerical algorithms used in the advection-diffusion part and in the chemical part) is studied in connection with six test-problems. We are interested in both the accuracy of the results and the efficiency of the parallel computations.

Keywords

Numerical Algorithm Emission Source Space Domain Parallel Task Chemistry Part 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • István Faragó
    • 1
  • Krassimir Georgiev
    • 2
  • Zahari Zlatev
    • 3
  1. 1.Eötvös Loránd UniversityBudapestHungary
  2. 2.Institute for Parallel ProcessingBulgarian Academy of SciencesSofiaBulgaria
  3. 3.National Environmental Research InstituteAarhus UniversityRoskildeDenmark

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