Full multiple Buneman-Boris solvers in nonrelativistic particle-in-cell simulation

Seiji Zenitani, Tsunehiko N Kato

Presentation information

[J] Oral

P (Space and Planetary Sciences ) » P-EM Solar-Terrestrial Sciences, Space Electromagnetism & Space Environment

[P-EM15] Space Plasma Physics: Theory and Simulation

Fri. Jun 4, 2021 10:45 AM - 12:15 PM Ch.06 (Zoom Room 06)

convener:Takanobu Amano(Department of Earth and Planetary Science, University of Tokyo), Yohei Miyake(Education Center on Computational Science and Engineering, Kobe University), Takayuki Umeda(Institute for Space-Earth Environmental Research, Nagoya University), Tadas Nakamura(Fukui Prefectural University), Chairperson:Shogo Isayama(Interdisciplinary Graduate School of Engineering Sciences, Kyushu University), Seiji Zenitani(Kobe University)

11:15 AM - 11:30 AM

[PEM15-09] Full multiple Buneman-Boris solvers in nonrelativistic particle-in-cell simulation

*Seiji Zenitani¹, Tsunehiko N Kato² (1.Kobe University, 2.National Astronomical Observatory of Japan)

Keywords:Particle-in-Cell (PIC) simulation, Numerical scheme, Buneman-Boris method

We propose a family of numerical solvers for the nonrelativistic Newton–Lorentz equation in particle-in-cell (PIC) simulations. In our recent contribution (Zenitani & Kato 2018), we have subsycled the Lorentz-force part of the two-step Boris solver. In this contribution, we propose to subcycle the entire acceleration part of the two-step Boris solver. We derive a single-step formula for arbitrary subcycle number n. The new solver provides a second-order accuracy, but provides n**2 times smaller error than the conventional two-step solver in the velocity space. We will evaluate key properties of the new solver such as the force-free property and the computational cost.