An Adaptive control system using the fuzzy theory for transient multi-physics numerical simulations

Muramatsu, Toshiharu; Yagawa, Genki*

An adaptive control system to yield optimum time step sizes was developed using the fuzzy theory for transient multi-physics numerical simulations. Applications of the control system reveals considerable amount of the computing time savings, typically by 50 % to 75 % of the computing time required when the time step size was not controlled by the system. The result obtained in this work is very encouraging in the sense that the adaptive control system would be used as one of the efficient measures for saving computing time when one wishes to perform extremely large-scale computations in transient multi-physics numerical simulations.