Multiscale Simulation of Nonlinear Phenomena of Plasmas

1.Introduction 2.Gyrokinetics and AstroGK 3.Magnetic reconnection as an example of multiscale phenomena 4.SummaryCollaborate Research Meeting of Institute of Mathematics for Industry & MEXT collaborative workshop of mathematics and mathematical sciences with various sciences and industrial technologies 2007Multiscale Mathematics : Hierarchy of collective phenomena and interrelations between hierarchical structuresMultiscale hierarchy is intrinsic in collsionless plasmas, where various kinetic effects having their own scales play important roles. Gyrokinetics and the gyrokinetic code AstroGK are introduced to study multiscale phenomena in plasmas. An application of the gyrokinetic simulation using AstroGK to magnetic reconnection as an example of multiscale phenomenon is discussed