SC is the International Conference for
 High Performnance Computing, Networking, Storage and Analysis

SCHEDULE: NOV 13-19, 2010

Highly Scalable Full Electromagnetic Vlasov Solver for Cross-Scale Coupling in Space Plasma

SESSION: Research Poster Reception

EVENT TYPE: Poster

TIME: 5:15PM - 7:00PM

AUTHOR(S):Takayuki Umeda, Keiichiro Fukazawa, Yasuhiro Nariyuki, Yosuke Matsumoto, Takuma Nakamura

ROOM:Main Lobby

ABSTRACT:
We are developing new schemes for solving the Vlasov-Maxwell system equations which are the first principle for kinetics of collisionless plasma. For studies of cross-scale coupling between fluid scale and ion scale or ion scale and electron scale, one need stable but less-dissipative time-integration scheme. First, we have modified the original splitting scheme for time integration proposed by Cheng and Knorr; second, we have developed a positive, non-oscillatory and conservative semi-Lagrangian scheme based on the fifth-degree polynomial for 1D scalar advection; and third, we have constructed an unsplitting conservative scheme for multidimensional advection. These new schemes have been successfully implemented into a 2P3V Vlasov solver, which has successfully achieved high scalability on scalar parallel supercomputer systems with 1,000-10,000 cores, and has applied to cross-scale plasma processes such as magnetic reconnection, Kelvin-Helmholtz instability and interaction between the solar wind and an unmagnetized asteroid.

Chair/Author Details:

Takayuki Umeda - Nagoya University

Keiichiro Fukazawa - Kyushu University

Yasuhiro Nariyuki - Kochi National College of Technology

Yosuke Matsumoto - Nagoya University

Takuma Nakamura - Institute of Space & Astronautical Science

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