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Efficient Preconditioning of Linear Systems Arising from the Discretization of Radiative Transfer Equation

  • Mohammed Seaïd
  • Axel Klar
Part of the Lecture Notes in Computational Science and Engineering book series (LNCSE, volume 35)

Abstract

Preconditioning techniques for iterative solvers of discretized radiative transfer equation are presented. Discrete ordinates collocation and Diamond differencing are used for angle and space discretizations respectively. To solve the resulting linear system we formulate source iteration, diffusion synthetic acceleration and Krylov subspace methods. We also introduce a fast multilevel algorithm. All these methods can be viewed as preconditioned iterative methods with different preconditioners. Numerical results along with comparisons of effectiveness and efficiency of these solvers are carried out on several test problems with both continuous and discontinuous variables.

Keywords

Radiative Transfer Krylov Subspace Coarse Level Radiative Transfer Equation Krylov Subspace Method 
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 2003

Authors and Affiliations

  • Mohammed Seaïd
    • 1
  • Axel Klar
    • 1
  1. 1.Fachbereich MathematikDarmstadtGermany

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