An acceleration technique for 2D MOC based on Krylov subspace and domain decomposition methods

► We convert MOC into linear system solved by GMRES as an acceleration method. ► We use domain decomposition method to overcome the inefficiency on large matrices. ► Parallel technology is applied and a matched ray tracing system is developed. ► Results show good efficiency even in large-scale and strong scattering problems. ► The emphasis is that the technique is geometry-flexible.