New Development of the Three-Dimensional Characteristics Solver MCI in DRAGON

Abstract

In this paper, we present the recent development of our 3D characteristics solver MCI. The Self-Collision Rebalancing (SCR) technique uses the self-collision probabilities to reduce the total iteration number. The proof of equivalence between the Collision Probabilities (CP) method and the characteristics method is given for finite 3D domains. The Track Merging Technique (TMT) is another new technique used by our characteristics solver. The neighboring lines are merged together in order to reduce the total number of lines. The TMT is an approximation of second order and can also be used by other tracking lines dependent solver.