Performance evaluations of advanced massively parallel platforms based on gyrokinetic toroidal five-dimensional eulerian code GT5D

Idomura, Yasuhiro   ; Jolliet, S.

A fusion plasma is an extremely complex physical system consisting of multiple fluids (an electron fluid and other ion fluids) coupled through electromagnetic fields and weak coulomb collisions. Because of its complexities, a direct numerical simulation (DNS) is becoming important not only as a complementary approach to obtain physical understanding but also as an essential tool for predicting turbulent transport in the experiment. In the presentation, an introductive review of simulation models and numerical approaches are given, and a progress in turbulent fusion plasma simulations is presented based on recent verification and validation studies.