Parallel numerical simulation of stimulated Brillouin scattering

In order to research the instability of stimulated Brillouin scattering(SBS) in the interaction of laser and plasma(LPI), three-wave mathematic models of SBS are established. According to the characteristic of equations, the operator splitting method, the coordinate transform, the parallel FFT and the reduce density algorithms are proposed. The numerical results demonstrate the validity of the algorithm. Scalability is demonstrated with a parallel efficiency above 81.6% with almost three hundred million meshes in 4096 cores.