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The bellow is colloquium schedule in Physics department. Every Wednesday 4:00 PM, colloquium is held in seminar room (Science Building III -201) Also, Free tea time will be held 30 minutes before colloquium stars. Please visit and enjoy the colloquium and tea time.


Colloquium 장소 및 시간: 세미나실(공학3동 201호) 오후 4시
연락처 : 물리학과 김지훈교수 (279-2077), jeehoon@postech.ac.kr

          물리학과 사무실 김수경 (279-5971) skyung@postech.ac.kr

Multi-hierarchy simulation bridging gaps between macro- and microphysics of magnetic reconnection

speaker : Ritoku Horiuchi[National Institute of Fusion Science, Japan]

location :

date : 2013-4-17

Magnetic reconnection is a typical nonlinear complex phenomenon controlled by multi-hierarchy physics from microscopic physics relating to electron and ion dynamics through macroscopic one such as plasma transport in a global scale. However, there are huge scale gaps in both space and time between macro- and microphysics of magnetic reconnection. Two different types of simulation models have been developed in order to bridge huge gaps between macro- and microphysics. One is a magnetohydrodynamic (MHD) model in which the information of microphysics obtained from a particle-in-cell (PIC) simulation is introduced in a form of electric resistivity.

The other is an MHD-PIC interlocked model in which a simulation region is split into PIC, MHD, and interface domains, and the micro- and macrophysics in each domain is solved with PIC and MHD models while exchanging their information through the interface domain. The details will be discussed in my talk.