JpGU-AGU Joint Meeting 2017

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[JJ] Oral

M (Multidisciplinary and Interdisciplinary) » M-GI General Geosciences, Information Geosciences & Simulations

[M-GI32] [JJ] Development of computational sciences on planetary formation, evolution and surface environment

Mon. May 22, 2017 9:00 AM - 10:30 AM 104 (International Conference Hall 1F)

convener:Yoshi-Yuki Hayashi(Department of Planetology/CPS, Graduate School of Science, Kobe University), Masaki Ogawa(Division of General Systems Studies, Graduate School of Arts and Sciences, University of Tokyo), Shigeru Ida(Department of Earth and Planetary Science, Graduate School of Science and Technology, Tokyo Institute of Technology), Kanya Kusano(Institute for Space-Earth Environmental Research, Nagoya University), Chairperson:Junichiro Makino(RIKEN AICS)

9:45 AM - 10:00 AM

[MGI32-04] High-resolution N-body simulations using Pezy-SC processor

*Takanori Sasaki1, Natsuki Hosono2 (1.Department of Astronomy, Kyoto University, 2.Graduate School of Advanced Integrated Studies in Human Survivability)

Keywords:N body simulation, moon formation, Pezy-SC

We developed an N-body simulation code on multiple Pezy-SC processors−Pezy-SC processor is a novel new architecture developed by Pezy Computing K. K. that has achieved large computational power with low electric power consumption. We adopt the rubble pile model for physical collisions, in which no mergers are allowed, and use FDPS (Framework for Developing Particle Simulator) to solve the self-gravity. We performed several sets of high- and extra-high-resolution N body simulations of the lunar accretion from a circumterrestrial disk of debris generated by a giant impact on Earth. The number of particles is up to 1 million, in which 1 particle corresponds to a 30 km-size satellitesimal. We show the performance and capability of our numerical code for high-resolution N-body simulations of planet/moon/ring formation.