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Research Plan of Complex Global Simulation Unit

Yasushi TODO, Hideaki MIURA, Mieko TOIDA, Ryuichi ISHIZAKI, Masahiko SATO, Hao WANG, Ryosuke SEKI, Jialei WANG, Malik IDOUAKASS, Panith ADULSIRISWAD, Naoki MIZUGUCHI, Takashi YAMAMOTO and Hideo SUGAMA

National Institute for Fusion Science, National Institutes of Natural Sciences, Toki 509-5292, Japan

(Received 21 February 2023 / Accepted 26 April 2023 / Published 17 August 2023)

Abstract

Global simulation, which takes into account the interactions between multiple hierarchies, is expected to be realized not only in the field of nuclear fusion research but also in other academic fields. However, such a complex global simulation is difficult to realize because the temporal and spatial scales of the microscopic hierarchy and those of the entire system are generally extremely different. The aim of the Complex Global Simulation Unit at the National Institute for Fusion Science is to develop simulation methods to address the abovementioned issue and to promote simulation research. This unit aims to develop 1) a global simulation of the whole magnetically-confined fusion plasma, including the core and peripheral plasma, based on the kinetic-magnetohydrodynamic hybrid simulation coupled with the gyrokinetic Poisson equation, and 2) a methodology with broad applicability for enabling simulations that closely reproduce real-world phenomena, transcending the strong limitations imposed by the capacity and capability of supercomputers. In addition, the unit aims to develop a method for coupling a particle-in-cell simulation and a global analysis of plasma waves. Furthermore, it aims to develop a multiphase (solid, liquid, gas, and plasma) simulation method for pellet injection into fusion plasmas.

Copyright (c) 2023 The Japan Society of Plasma Science and Nuclear Fusion Research

Keywords

global simulation, kinetic-MHD hybrid simulation, data science, turbulence, particle-in-cell simulation

DOI: 10.1585/pfr.18.2503067

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