Domain decomposition for the SPN solver MINOS

E. Jamelot (1) , Am. Baudron (1) , Jj. Lautard (1)

1 CEA-DES (ex-DEN) - CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire)

In this article we present a domain decomposition method for the mixed SPN equations, discretized with Raviart-Thomas-Nédélec finite elements. This domain decomposition is based on the iterative Schwarz algorithm with Robin interface conditions to handle communications. After having described this method, we give details on how to optimize the convergence. Finally, we give some numerical results computed in a realistic 3D domain. The computations are done with the MINOS solver of the APOLLO3 code.

Keywords: simplified transport equations; domain decomposition; Schwarz iterative algorithm; Robin interface conditions; MINOS solver; APOLLO3 code

Domains: Nuclear Experiment [nucl-ex]; Nuclear Theory [nucl-th]

E. Jamelot, Am. Baudron, Jj. Lautard. Domain decomposition for the SPN solver MINOS. Transport Theory and Statistical Physics, 2012, 41, ⟨10.1080/00411450.2012.694827⟩. ⟨cea-02428805⟩