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Simulation of laser propagation in a plasma with a frequency wave equation. (English) Zbl 1132.76040
Summary: We perform numerical simulations of the propagation of a laser beam in plasma. At each time step, one has to solve Helmholtz equation in a domain which consists of some hundreds of millions of cells. To solve this huge linear system, we use an iterative Krylov method preconditioned by a separable matrix. The corresponding linear system is solved with a block cyclic reduction method. Some enlightenments 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.

76M25 Other numerical methods (fluid mechanics) (MSC2010)
76X05 Ionized gas flow in electromagnetic fields; plasmic flow
65F10 Iterative numerical methods for linear systems
65Y05 Parallel numerical computation
Full Text: DOI arXiv
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