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RADIATIVE TRANSFER - VI. Proceedings of the 6th International Symposium on Radiative Transfer
June, 13-19, 2010, Antalya, Turkey

DOI: 10.1615/ICHMT.2010.RAD-6


ISBN Print: 978-1-56700-269-0

ISSN Online: 2642-5629

ISSN Flash Drive: 2642-5661

PARALLEL SOLUTION OF THE RADIATIVE TRANSFER EQUATION ON UNSTRUCTURED MESHES USING AN EXPLICIT SOLVER

pages 33-35
DOI: 10.1615/ICHMT.2010.RAD-6.460
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RESUMO

Our goal is to solve the Radiative Transfer Equation on unstructured grids by using parallel computation. The spatial domain is divided into several parts, each one of which is assigned to a particular processor. The algorithm used is applicable on problems discretized by the finite volume method for the spatial part, and that use any method to perform the angular integrations, the most popular of which are the Discrete Ordinate Method (DOM) and the Finite Volume Method (FVM).
In structured grids, the solution of the RTE can be achieved by means of an explicit calculation of the intensity radiation field from previously calculated values in the cells that lie upstream in the solving direction. This approach yields to the solution in a highly efficient manner. This procedure can be generalized to make use of many processors, in an algorithm that is known as parallel sweep. As the efficiency of the explicit calculation can be maintained using the parallel sweep, this method has been preferred to the use of algebraic iterative solvers, which can also be efficiently parallelized.

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