Print Email Facebook Twitter Hall Effects on scale hierarchy in MHD turbulence Part of: 15th EuropeanTurbulence Conference 2015 (ETC15)· list the conference papers Title Hall Effects on scale hierarchy in MHD turbulence Author Miura, H. Hatori, T. Keisure, A. Date 2015-08-25 Abstract Direct numerical simulations of MHD turbulence with and without uniform magnetic field are carried out to study the Hall effects on scale-hierarchy in MHD turbulence. It is observed that vortex and current sheets are filamented either by the Kelvin- Helmholtz instability or magnetic reconnection in case of Hall MHD turbulence, while the filamentation is not observed without the Hall term. We show that the filamentation occurs not only for scales smaller than the ion skin depth, which is indicated by the Hall parameter, but also for scales larger than the ion skin depth, affecting turbulence statistics. It is also shown that the Hall effects can be modelled by a Smagorinsky-type model effectively for high wave number regions. Subject Hall effectsMHD turbulencestructure transition To reference this document use: http://resolver.tudelft.nl/uuid:75f7df3c-313c-4ceb-a7f4-51cc2699670b Part of collection Conference proceedings Document type conference paper Rights (c) 2015 the Authors Files PDF 91.pdf 560.03 KB Close viewer /islandora/object/uuid:75f7df3c-313c-4ceb-a7f4-51cc2699670b/datastream/OBJ/view