1991 年 65 巻 5 号 p. 544-555
In this lecture series, various kinds of nonlinear dynamics observed in magnetohydrodynamic plasmas and particle kinetic plasmas are described. There, it is emphasized that the computer simulation has been cultivating a new trend in physics to study fertile physical processes involved in these plasmas. In this lecture, the computer simulation study, which has been developed in accordance with the development of computers, is applied to clarify magnetohydrodynamic phenomena of helical systems in which the plasma has intrinsically threedimensional structure.