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 10:45 AM - 12:15 PM 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:Masanori Kameyama(Geodynamics Research Center, Ehime University)

11:40 AM - 11:50 AM

[MGI32-11] Computational science of dust coagulation process in protoplanetary disk turbulence

*Takashi Ishihara1, Naoki Kobayashi1, Kei Enohata1, Kenji Shiraishi1, Masayuki Umemura2 (1.Nagoya University, 2.Tsukuba University)

By using recent supercomputers, it is becoming possible to use larger-scale direct numerical simulation (DNS) of high-Reynolds-number (Re) turbulence for understanding complex turbulent flow phenomena. Coagulation process of silicate dusts in protoplanetary disk is one of the most challenging problems in planetary science. By tracking huge number (more than one billion) of inertial particles in high Re turbulence, we could simulate turbulent clustering of particles directly and quantitatively. Our DNS of turbulence showed that dust coagulation is expedited by turbulence clustering of particles. The next step is to realize dust growth simulations to quantitatively estimate the growth rate of dust particles and the size-distribution in high Re turbulence. In the presentation, what we have obtained so far and what we are trying will be discussed.