SIMULATION OF LASER PROPAGATION IN A PLASMA WITH A FREQUENCY WAVE EQUATIONReport as inadecuate




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* Corresponding author 1 Commissariat à l-Energie Atomique 2 LJLL - Laboratoire Jacques-Louis Lions

Abstract : The aim of this work is to perform numerical simulations of the propagation of a laser in a plasma. At each time step, one has to solve a Helmholtz equation in a domain which consists in some hundreds of millions of cells. To solve this huge linear system, one uses a iterative Krylov method with a preconditioning by a separable matrix. The corresponding linear system is solved with a block cyclic reduction method. Some enlightments on the parallel implementation are also given. Lastly, numerical results are presented including some features concerning the scalability of the numerical method on a parallel architecture.

Keywords : laser plasma interaction high performance parallel computing domain decomposition method





Author: Sylvain Desroziers - Frédéric Nataf - Remi Sentis -

Source: https://hal.archives-ouvertes.fr/



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