Japan Geoscience Union Meeting 2015

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Poster

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

[P-EM26] Space Plasma Physics: Theory and Simulation

Sun. May 24, 2015 6:15 PM - 7:30 PM Convention Hall (2F)

Convener:*Takayuki Umeda(Solar-Terrestrial Environment Laboratory, Nagoya University), Takanobu Amano(Department of Earth and Planetary Science, University of Tokyo), Yasuhiro Nariyuki(Faculty of Human Development, University of Toyama), Tooru Sugiyama(Japan Agency for Marine-Earth Science and Technology Center for Earth Information Science and Technology), Tadas Nakamura(Fukui Prefectural University)

6:15 PM - 7:30 PM

[PEM26-P08] Vlasov simulation of the Rayleigh-Taylor instability

*Yasutaka WADA1, Takayuki UMEDA1, Satoshi UENO1, Shinobu MACHIDA1 (1.Solar-Terrestrial Environment Laboratory)

Keywords:Rayleigh-Taylor instability, Vlasov simulation, space plasma

The Rayleigh-Taylor instability (RTI) develops at an interface between two fluids with different densities when an external force is applied from a heavy fluid to a light fluid. In the previous studies of ideal MHD simulations, the RTI develops symmetrically in the horizontal axis. On the other hand, previous hall-MHD and Finite-Larmor-Radius (FLR)-MHD simulations have shown that the RTI develops asymmetrically in the horizontal axis. In this study, we perform four-dimensional Vlasov simulations of the RTI with two spatial dimensions and three velocity dimensions. We vary the ratio of the ion inertial length and/or the ion gyroradius to the spatial scale of the density gradient layer, and discuss the effect of the non-MHD effects on the growth of the RTI.